Cam Ideas 5.7 Silverado

[litt9013]

any ideas?

I was maybe thinkin edelbrock performer series....

I've got about 200 bucks to play with.....

and have no idea what to do. haha

so any help would be nice.

[Nytemare]

There are about half a million cams out there for that engine. The edelbrock is a nice cam, and you'll be happy with it, But what exactly are you looking for...Low end? Mid range, High HP...???

[litt9013]

There are about half a million cams out there for that engine. The edelbrock is a nice cam, and you'll be happy with it, But what exactly are you looking for...Low end? Mid range, High HP...???

 

 

I decided to not go with the edelbrock because i will have to buy the edelbrock timing gears with it......

I've heard alot of good things about RV cams for the type of stuff that i do.....

I just dunno a whole lot about cams.... but ill take a wild guess and say mid range.

the guy who sold it to my brother told me he put a z71 cam in it at 200,000 and rebuilt the bottom end.

Brother had the attitude of drive it till it quits working....

so im fixing my brothers mistakes......

it also went through 3 high schoolers the guy, my brother, and me

 

But maybe this will help...

89 tbi 350 286,836 runs like a champ no smoke, rings, cylinder walls great shape, just collapsing lifter.

gonna get cam and lifter kit, new push rods.

Is my DD.

still using stock valve train (new valve guide seals)

finally got out of the the age 16 foot.

heaviest thing I tow is 2 4 wheelers up the mountain quite a bit. And firewood in the fall

alot of off road driving around not really hardcore 4x4 but sometimes get into a tight spot like any 4wd should

alot of steep grade puttin, rare towing occasions.

Dont do a whole lot of freeway driving if so only 40 miles to the lake.

not really goin for meltin tires and shittin fire. Want to! but no.

fun to rape riced out honda's stock cam was fine for that

Happy with about everything Just a little more overall power and torque would be nice to help tow a little better.

 

sorry about the long message.... just wanna make sure I get the right cam for what I do.

[Badass69]

I am assuming that this truck is the original TBI flat tappet setup and not a roller cam. Otherwise I would suggest the stock B body LT1/Vortec 305/350 cam. However then you need the entire roller setup for that if your block is provisioned for it. As far as having to use the Edelbrock timing gears that's garbage. You can use any timing setup you want on it. However the Edelbrock TBI truck cam is garbage too ( part # 3704), part number 2102 is much better for mild stock builds. I wouldn't bother buying either however. A Z71 cam huh..... never heard that one before...... considering regardless of the truck the TBI truck cams were for the most part all the same.

 

Basically an average parts hourse "RV" small block Chevy cam is usually something around .420 lift on the intake, .440 on the exhaust, with a 204/214 ( or in that realm) duration at 0.050". The only thing that varies is the lobe seperation angle but for simplicity sake try and get one at 112 degrees.

 

The Summit 1102 fits the bill and is just over $50.

 

http://www.summitracing.com/parts/SUM-1102/

 

Now here is the part you may not be aware of. Tuning. This cam will run okay with the stock chip, but would do better with the base timing set between 4 and 8 degrees and the fuel pressure increased ( buy an adjustable fuel pressure regulator with your leftover money). It will not run nearly as hard as it would with a good custom chip. Brian at TBIchips.com can handle something like this and would get you a tune that would make the truck run much better even with the stock replacement cam in place. The TBI tunes are junk ( much like everything else) and a good custom one will wake the truck up.

 

Beyond that do the free mods like radiusing out the airhorn ring on top of the throttle body itself, radiusing the bore of the throttle body and even shaving the throttle shafts if you are confident. A cheap injector pod spacer ( not a throttle body spacer, injector spacer) and the adjustable regulator will make a nice gain too.

 

Go over to www.fullsizechevy.com and check the performance section. There is an entire section on TBI truck tuning along with a sticky in the main performance section about TBI mods. There are more aggressive cams out there that work very well, but usually require more tuning and fiddling to make them run properly.

 

Headers and good free flowing exhaust would help too.

[Nytemare]

Totally agree man...that is a very nice cam, and for the price...you cannot beat that.

 

 

The guy that told you he put a Z71 cam in it is a total moron...there's nothing different about the Z71 cam...its a 350...just like every other 350 made those years.

[litt9013]

Ya I did some research on the z71 cam and found out its the same haha... feel like a retard for believing him but I do know now!

Annnd my truck is chipped (old though)

the timing is already advanced 4 degrees.

I do need headers. but exhaust is just single 3 inch strait.

 

 

I looked up that cam with the lifters included http://www.summitracing.com/parts/SUM-K1102/ and ill save about 40 bucks

So I do believe i will do that......

 

I was gonna wait to save some money pull and rebuild the engine. But random collapsing lifter kinda screwed that idea up since Its my only vehichle. so piece by piece here i come!

 

any other gaskets/seals i will need other then intake man, valve cover, water pump.

 

Annd thank you soooo much for helping me with this..

[Nytemare]

Ya I did some research on the z71 cam and found out its the same haha... feel like a retard for believing him but I do know now!

Annnd my truck is chipped (old though)

the timing is already advanced 4 degrees.

I do need headers. but exhaust is just single 3 inch strait.

 

 

I looked up that cam with the lifters included http://www.summitracing.com/parts/SUM-K1102/ and ill save about 40 bucks

So I do believe i will do that......

 

I was gonna wait to save some money pull and rebuild the engine. But random collapsing lifter kinda screwed that idea up since Its my only vehichle. so piece by piece here i come!

 

any other gaskets/seals i will need other then intake man, valve cover, water pump.

 

Annd thank you soooo much for helping me with this..

NO you just about have it...You may need an EGR gasket, as when you get a look at it it may be leaking...I would buy a top end kit,FEL-PRO Part # HS7733PT15, You just dont need the valve stem seals and head gaskets...but you may use them later on.

Being you have a TBI truck, you can benefit from a Throttle body spacer too...as your fuel and air mix in the TB like a carburetor. Transdapt makes a nice cheap one for your application...under 50 bucks http://www.summitracing.com/parts/TRD-2633/

Also, Try and get a TB from a 454. They have slightly larger injectors and bores and can be had for under 200 bones, I have seen them as low as 100 bucks on e-bay.

Other cheap power adders are, a specter Air Filter and a Chrome air cleaner from Transdapt...Or a K&N if you want...they're double the price of specter though.

Single 3" exhaust is about the best you could do for power.

[litt9013]

sweet thanks... I know where there is a blown 454 that just sitting their gettin old so ill get the tbi off and clean the hell outta it.....

 

annnd I have 40 bucks on my autozone card so i was just gonna get the gaskets from them to save some money haha.

 

somewhere in the next few months imma pull the motor/tranny and rebearing and rebuild the bottom end and redo my springs rockerarms, to make sure its a fresh-ish engine.

 

then i gotta retap the tranny where the shifter boot bolts onto the top of the tranny cause whoever tightened em stripped it out so ill quit having tranny fluid leak all over.......

 

gotta love having no money or time to do it right the first time.....

 

ill take pics and post them on the cam installation....

 

Thanks for Helping me save 40 bucks and gettin better then a stock hotness cam. haha.

[Nytemare]

sweet thanks... I know where there is a blown 454 that just sitting their gettin old so ill get the tbi off and clean the hell outta it.....

 

annnd I have 40 bucks on my autozone card so i was just gonna get the gaskets from them to save some money haha.

 

somewhere in the next few months imma pull the motor/tranny and rebearing and rebuild the bottom end and redo my springs rockerarms, to make sure its a fresh-ish engine.

 

then i gotta retap the tranny where the shifter boot bolts onto the top of the tranny cause whoever tightened em stripped it out so ill quit having tranny fluid leak all over.......

 

gotta love having no money or time to do it right the first time.....

 

ill take pics and post them on the cam installation....

 

Thanks for Helping me save 40 bucks and gettin better then a stock hotness cam. haha.

If it aint knocking or smoking, leave it alone. Save your cash for when you need a total rebuild. You have to adjust your rocker arms with the new cam/lifter/pushrods anyway...the springs are gonna be fine, I have seen them go well over 300K miles than get reused on a rebuild....They will be fine.

 

Bring a gasket with you when you grab that TBI off the 454, there may be some differences to it, don't wanna buy something when it wont fit. Most fit fine...some don't.

[Badass69]

sweet thanks... I know where there is a blown 454 that just sitting their gettin old so ill get the tbi off and clean the hell outta it.....

 

annnd I have 40 bucks on my autozone card so i was just gonna get the gaskets from them to save some money haha.

 

somewhere in the next few months imma pull the motor/tranny and rebearing and rebuild the bottom end and redo my springs rockerarms, to make sure its a fresh-ish engine.

 

then i gotta retap the tranny where the shifter boot bolts onto the top of the tranny cause whoever tightened em stripped it out so ill quit having tranny fluid leak all over.......

 

gotta love having no money or time to do it right the first time.....

 

ill take pics and post them on the cam installation....

 

Thanks for Helping me save 40 bucks and gettin better then a stock hotness cam. haha.

 

Really don't bother with the 454's TBI for now. You are nowhere near the limit of the stock small block unit. That and the added injector size won't help unless you scale the PCM's tune for it. Doing what are called the "Ultimate Mods" and the adjustable regulator will do you fine. That and you don't need to try and bore your intake manifold for the 2" butterflies of the 454 unit. Bolt pattern is the same but the IAC motor, linkage, and TPS are going to need wiring if you wanted it to work. Not worth it until you add some serious power or more cubic inches.

 

That and be careful with 454 TBI's. The 94 and later ones have smaller injectors than your stock 350 unit does accounting for the fact they went to a higher pressure fuel pump.

[Nytemare]

sweet thanks... I know where there is a blown 454 that just sitting their gettin old so ill get the tbi off and clean the hell outta it.....

 

annnd I have 40 bucks on my autozone card so i was just gonna get the gaskets from them to save some money haha.

 

somewhere in the next few months imma pull the motor/tranny and rebearing and rebuild the bottom end and redo my springs rockerarms, to make sure its a fresh-ish engine.

 

then i gotta retap the tranny where the shifter boot bolts onto the top of the tranny cause whoever tightened em stripped it out so ill quit having tranny fluid leak all over.......

 

gotta love having no money or time to do it right the first time.....

 

ill take pics and post them on the cam installation....

 

Thanks for Helping me save 40 bucks and gettin better then a stock hotness cam. haha.

 

Really don't bother with the 454's TBI for now. You are nowhere near the limit of the stock small block unit. That and the added injector size won't help unless you scale the PCM's tune for it. Doing what are called the "Ultimate Mods" and the adjustable regulator will do you fine. That and you don't need to try and bore your intake manifold for the 2" butterflies of the 454 unit. Bolt pattern is the same but the IAC motor, linkage, and TPS are going to need wiring if you wanted it to work. Not worth it until you add some serious power or more cubic inches.

 

That and be careful with 454 TBI's. The 94 and later ones have smaller injectors than your stock 350 unit does accounting for the fact they went to a higher pressure fuel pump.

 

I have had lots of friends that have done this very same mod and didnt have to do anything with the stock intake manifold???

 

Are the Intake manifolds different here in Canada??

 

Also, he would benefit from it due to the point he already has an upgraded EPROM in the ECM, and with a noticeably different cam, more fuel is a very good thing.

[Badass69]

sweet thanks... I know where there is a blown 454 that just sitting their gettin old so ill get the tbi off and clean the hell outta it.....

 

annnd I have 40 bucks on my autozone card so i was just gonna get the gaskets from them to save some money haha.

 

somewhere in the next few months imma pull the motor/tranny and rebearing and rebuild the bottom end and redo my springs rockerarms, to make sure its a fresh-ish engine.

 

then i gotta retap the tranny where the shifter boot bolts onto the top of the tranny cause whoever tightened em stripped it out so ill quit having tranny fluid leak all over.......

 

gotta love having no money or time to do it right the first time.....

 

ill take pics and post them on the cam installation....

 

Thanks for Helping me save 40 bucks and gettin better then a stock hotness cam. haha.

 

Really don't bother with the 454's TBI for now. You are nowhere near the limit of the stock small block unit. That and the added injector size won't help unless you scale the PCM's tune for it. Doing what are called the "Ultimate Mods" and the adjustable regulator will do you fine. That and you don't need to try and bore your intake manifold for the 2" butterflies of the 454 unit. Bolt pattern is the same but the IAC motor, linkage, and TPS are going to need wiring if you wanted it to work. Not worth it until you add some serious power or more cubic inches.

 

That and be careful with 454 TBI's. The 94 and later ones have smaller injectors than your stock 350 unit does accounting for the fact they went to a higher pressure fuel pump.

 

I have had lots of friends that have done this very same mod and didnt have to do anything with the stock intake manifold???

 

Are the Intake manifolds different here in Canada??

 

Also, he would benefit from it due to the point he already has an upgraded EPROM in the ECM, and with a noticeably different cam, more fuel is a very good thing.

 

 

Different in Canada, LOL. Haha, nice try. No they use the same 1 11/16" bore up here as anywhere ( I am in Alberta BTW, just don't advertise it). If you friends use an adapter of sorts then no, you don't need to do anything to the intake technically....... But then what was the point of the modification. So now you have 2" butterflies feeding an 1 11/16" intake bore. You gain nothing. All small block bores are 1 11/16" whether it be a 4.3, a 305 or a 350. That and you are going to run rich across the board since you went from 61 pph injectors up to something north of 80 pph. It might run "okay" but it's an unecessary mod. You can get a lot out of the factory injectors by simply playing with fuel pressure. The stock pump and stock injectors can easily feed a stockish 350 with a mild cam. Now start adding some serious heads, bigger cams, more cubes, whatever and more fuel pressure becomes beneficial. I would put a higher pressure pump and an adjustable regulator long before a 454 TBI ever got anywhere near that engine.

 

He will need more fuel but getting an adjustable regulator to accomplish that. Without properly scaling a chip for a 454's TBI you are throwing your money away. No generic tune will have done that. You would have to specifically tune for it after you add it.

 

Your friends probably got a little more with a 454 TBI but did anyone do the Ultimate mods first...... of course I will say no because up until now you guys have probably never heard of that. Check fullsizechevy.com under the performance section..... or thirdgen.org...... or even TBIchips.com. There are great write ups on all those sites about making power with TBI, and not requiring the big block's TBI because it is unecessary.

 

There are a ton of 300+ Hp TBI trucks running around that still retain the stock 1 11/16" TBI unit.

 

That and really until you are north of 400 hp somewhere small block injectors are adequate. They may only flow 61 pph at 13 psi..... jack that to 40 psi and you get substantially more. GM even did that on those 94 and up TBI 454's... if run at 13 psi those injectors were somewhere down in the 38 pph range........ but enough for the big block because they had adequate flow at a higher pressure ( around 40 psi I believe).

 

Food for thought anyways.

[Nytemare]

sweet thanks... I know where there is a blown 454 that just sitting their gettin old so ill get the tbi off and clean the hell outta it.....

 

annnd I have 40 bucks on my autozone card so i was just gonna get the gaskets from them to save some money haha.

 

somewhere in the next few months imma pull the motor/tranny and rebearing and rebuild the bottom end and redo my springs rockerarms, to make sure its a fresh-ish engine.

 

then i gotta retap the tranny where the shifter boot bolts onto the top of the tranny cause whoever tightened em stripped it out so ill quit having tranny fluid leak all over.......

 

gotta love having no money or time to do it right the first time.....

 

ill take pics and post them on the cam installation....

 

Thanks for Helping me save 40 bucks and gettin better then a stock hotness cam. haha.

 

Really don't bother with the 454's TBI for now. You are nowhere near the limit of the stock small block unit. That and the added injector size won't help unless you scale the PCM's tune for it. Doing what are called the "Ultimate Mods" and the adjustable regulator will do you fine. That and you don't need to try and bore your intake manifold for the 2" butterflies of the 454 unit. Bolt pattern is the same but the IAC motor, linkage, and TPS are going to need wiring if you wanted it to work. Not worth it until you add some serious power or more cubic inches.

 

That and be careful with 454 TBI's. The 94 and later ones have smaller injectors than your stock 350 unit does accounting for the fact they went to a higher pressure fuel pump.

 

I have had lots of friends that have done this very same mod and didnt have to do anything with the stock intake manifold???

 

Are the Intake manifolds different here in Canada??

 

Also, he would benefit from it due to the point he already has an upgraded EPROM in the ECM, and with a noticeably different cam, more fuel is a very good thing.

 

 

Different in Canada, LOL. Haha, nice try. No they use the same 1 11/16" bore up here as anywhere ( I am in Alberta BTW, just don't advertise it). If you friends use an adapter of sorts then no, you don't need to do anything to the intake technically....... But then what was the point of the modification. So now you have 2" butterflies feeding an 1 11/16" intake bore. You gain nothing. All small block bores are 1 11/16" whether it be a 4.3, a 305 or a 350. That and you are going to run rich across the board since you went from 61 pph injectors up to something north of 80 pph. It might run "okay" but it's an unecessary mod. You can get a lot out of the factory injectors by simply playing with fuel pressure. The stock pump and stock injectors can easily feed a stockish 350 with a mild cam. Now start adding some serious heads, bigger cams, more cubes, whatever and more fuel pressure becomes beneficial. I would put a higher pressure pump and an adjustable regulator long before a 454 TBI ever got anywhere near that engine.

 

He will need more fuel but getting an adjustable regulator to accomplish that. Without properly scaling a chip for a 454's TBI you are throwing your money away. No generic tune will have done that. You would have to specifically tune for it after you add it.

 

Your friends probably got a little more with a 454 TBI but did anyone do the Ultimate mods first...... of course I will say no because up until now you guys have probably never heard of that. Check fullsizechevy.com under the performance section..... or thirdgen.org...... or even TBIchips.com. There are great write ups on all those sites about making power with TBI, and not requiring the big block's TBI because it is unecessary.

 

There are a ton of 300+ Hp TBI trucks running around that still retain the stock 1 11/16" TBI unit.

 

That and really until you are north of 400 hp somewhere small block injectors are adequate. They may only flow 61 pph at 13 psi..... jack that to 40 psi and you get substantially more. GM even did that on those 94 and up TBI 454's... if run at 13 psi those injectors were somewhere down in the 38 pph range........ but enough for the big block because they had adequate flow at a higher pressure ( around 40 psi I believe).

 

Food for thought anyways.

 

Yeah, agreed...they probably used some sort of spacers for the 454TBI. I know some stuff I have seen is much different stateside, due to emissions rules and such that's why I suggested it.

Bumping the fuel pressure is a great idea...but I it costs 75 for an adjustable fuel pressure regulator and shortly after another 100 or so for a new pump, as if the old one is subjected to the increased demand it will usually fry.

 

Your gonna have to go into a little more about the "ultimate Mod" stuff...I have never heard of it, your right there. But than I don't usually tune TBI trucks either...Its so cheap to build them with better parts that I don't much screw with stock...and if I do its just a totally stock rebuild that the guys want.

 

The other thing is that you need someone to burn you a chip in order to tune it right for your mods...Its not just a plug in and tune like an OBDII system.

[Badass69]

Yeah, agreed...they probably used some sort of spacers for the 454TBI. I know some stuff I have seen is much different stateside, due to emissions rules and such that's why I suggested it.

Bumping the fuel pressure is a great idea...but I it costs 75 for an adjustable fuel pressure regulator and shortly after another 100 or so for a new pump, as if the old one is subjected to the increased demand it will usually fry.

 

Your gonna have to go into a little more about the "ultimate Mod" stuff...I have never heard of it, your right there. But than I don't usually tune TBI trucks either...Its so cheap to build them with better parts that I don't much screw with stock...and if I do its just a totally stock rebuild that the guys want.

 

The other thing is that you need someone to burn you a chip in order to tune it right for your mods...Its not just a plug in and tune like an OBDII system.

 

Actually it's absolutely no harder on the fuel pump at all. The pump makes whatever pressure it can ( usually about 15-17 psig ) and then is restricted by the regulator at the TBI. Increasing pressure is just effectively letting the pump flow with less restriction which may increase life if anything.

 

You can easily make your stock fuel pressure regulator adjustable as well, thus avoiding any cost. The most you may have to invest in is a guage.

 

Considering the TBI aftermarket isn't very big why is using oem parts so hard to believe. Holley TBI's are garbage, always will be. Edelbrock's TBI conversion is overpriced and somewhat of a joke. You can make it useable but you need to upsize the injectors.

 

You can run aftermarket setups like a Holley Stealthram with the 7427 ecm from the 93-95 TBI trucks. It can also run TPI and whatnot. I personally like the flash memory PCM's over the old chip style.

 

I don't even play with TBI at all anymore actually, I don't even really like it honestly.

 

Visit the sites I mentioned above and there are tons of articles on the Ultimate mods for guys that want to try and make power with it.

 

Cheers.

[Nytemare]

Yeah, agreed...they probably used some sort of spacers for the 454TBI. I know some stuff I have seen is much different stateside, due to emissions rules and such that's why I suggested it.

Bumping the fuel pressure is a great idea...but I it costs 75 for an adjustable fuel pressure regulator and shortly after another 100 or so for a new pump, as if the old one is subjected to the increased demand it will usually fry.

 

Your gonna have to go into a little more about the "ultimate Mod" stuff...I have never heard of it, your right there. But than I don't usually tune TBI trucks either...Its so cheap to build them with better parts that I don't much screw with stock...and if I do its just a totally stock rebuild that the guys want.

 

The other thing is that you need someone to burn you a chip in order to tune it right for your mods...Its not just a plug in and tune like an OBDII system.

 

Actually it's absolutely no harder on the fuel pump at all. The pump makes whatever pressure it can ( usually about 15-17 psig ) and then is restricted by the regulator at the TBI. Increasing pressure is just effectively letting the pump flow with less restriction which may increase life if anything.

 

You can easily make your stock fuel pressure regulator adjustable as well, thus avoiding any cost. The most you may have to invest in is a guage.

 

Considering the TBI aftermarket isn't very big why is using oem parts so hard to believe. Holley TBI's are garbage, always will be. Edelbrock's TBI conversion is overpriced and somewhat of a joke. You can make it useable but you need to upsize the injectors.

 

You can run aftermarket setups like a Holley Stealthram with the 7427 ecm from the 93-95 TBI trucks. It can also run TPI and whatnot. I personally like the flash memory PCM's over the old chip style.

 

I don't even play with TBI at all anymore actually, I don't even really like it honestly.

 

Visit the sites I mentioned above and there are tons of articles on the Ultimate mods for guys that want to try and make power with it.

 

Cheers.

 

Good info there man

Yeah, if anything I personally would go with the marine MPFI setup. But I have just heard a bunch of guys here (as in around my area...not here on the website) rave about the 454 TB and how much difference it made...without a dyno though, you can never really be sure if its really making much of a difference.

Yeah the newer style PCM's are so much easier to tune. And yeah the TPI setup is very nice, and is one of my personal fave engines both for looks and playing with.