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Motor specs.

cowboy02

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cowboy02 Senior Enthusiast

cowboy02

Posted
Posted

So I've got a stupid question..........

 

a 5.7L V8 is basicly a 350 motor right?

 

and a 4.6L is a 302 right?

 

What is the 5.3L that is in all the newer trucks?  Somewhere I heard it was like 338cc?  Maybe I'm wrong but it sure would be nice to figure it out......

 

Thanks for all the input..... :cheers:

 

Cowboy

Colorado Kid Enthusiast

Colorado Kid

Posted
Posted
So I've got a stupid question..........

 

a 5.7L V8 is basicly a 350 motor right?

 

and a 4.6L is a 302 right?

 

What is the 5.3L that is in all the newer trucks?  Somewhere I heard it was like 338cc?  Maybe I'm wrong but it sure would be nice to figure it out......

 

Thanks for all the input..... :cheers:

 

Cowboy

a 5.7L is a 350.

 

The 4.6L is (I believe) 280 Cu in (The 302 and 5.0 were one and the same).

 

The 5.3L is 325 cu. in.

 

The 5.4L is 330 cu. in.  (once again...that's what I think it is...I haven't paid much attention to the actual displacements of brand F engines.

 

Anyway, there are 61.024 cubic inches in a Liter, so the displacement in liters x 61 will get you mighty close to the cubic inches...since a cubic inch is a smaller unit that 0.1 Liter you won't get the exact cubic inches very often.  (5.7 x 61 = 348, but we know it's a 350).  You should end up within about 3 cubic inches, because there are 6.1 cubic inches in 0.1L)

 

Now you can figure it out... :thumb:

maggot Enthusiast

maggot

Posted
Posted

Cubes can confuse you, if that is all you are going by.  Speaking of production, Consider the Chevy 302, it was probably the meanest small block ever built. And in the big block world the L88 427 is hands down the meanest big block ever.    Cubes are a good starting point to look at but it can be misleading.  There is much more than just a size measurement.

 

The 6.0l and 5.3 are pretty close to the same motor.

I THINK the major difference is the pistons. The 6.0L is a 4inch bore and the 5.3 is around 3.5 inches. The compression is a bit higher on the 5.3(9.5 to 1) while my 6.0L is 9.4, the Caddy version has 10.1. I am pretty sure everyhting else is pretty close between the two.

 

Ok what is his point here??I am not 100% sure other than the L rating is not the final factor in what makes a good motor.

cowboy02 Senior Enthusiast

cowboy02

Posted
  • Author
Posted

We'll as far as what makes a good motor........

 

They don't make them like they used to......

 

My old 350 Chevy with bored out block and High compresion pistons with A Holley 4 Brl Double pumper carb could put out the HP.........

 

I smoke a 460 Ford in the quarter mile with that bad boy.....

 

However my new truck is going to remain factory :cheers: Since It's hard to tune them up like the old days..... :uhoh:

 

Sure I could by a Hypertech and do some computer stuff but really your not talking about adding in HP with one of those.  Unless I'm mistaken and it wouldn't be the first time that has happend. :smash:   The real HP gains comes from mucking with compresion heads valves Pulleys and of course superchargers.........

 

But hey all in all thanks for the calculations....

maggot Enthusiast

maggot

Posted
Posted
Not to bust a bubble but a ford 460 can  and should be easy to beat in a drag race,  Heck I had a 307 that I beat up on a few big blocks in it's day. It was stock with a mild cam and and a Offy aluminum intake topped with a 650 spreadbore Holley.   I have had and built motors in my youth ,  and looking at my 6.0L I would have to say it is a step above the GenI and has much in common with the NASCAR motors.  The bottom end is undestructable, it has a awesome set of heads, the lifters and rockers and oil delivery is also awesome. Sure they are loud but I have to say that the new piston design is great, less mass and lighter materials is so cool the crank and rods are race technology. The technology that is put in these new motors is pretty deep.  The fuel intake system is sooo much better than the carbs of the past.  And the fire delivery and timing system(coils and no distributor) is much much better than the old HEI and points. Heck the total package is great.
westex39 Enthusiast

westex39

Posted
Posted

CHEVROLET ENGINE INFO

 

LITERS      BORE & STROKE METRIC     BORE & STROKE SAE       CUBIC IN

 

4.8 96.01  X  83.00 3.78  X  3.2677165   293.48276

 

5.3 96.01  X  92.00 3.78  X  3.6220472   325.30620

 

6.0 101.60  X  92.00 4.00  X  3.6220472   364.27444

 

8.1 107.95 X  111.00 4.25  X  4.3700787   496.15999

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