2014 gmc sierra Going whipple

[prox_denali]

Orrrr you could do Whipple, heads/cam/exhaust and get best of both worlds haha! I wish e85 was more available near where I live. I just only run 93. It runs pretty good but e85 would be fun to try. 

[flyingfool]

or just do what all the Zo6 guys are doing ,dump the SC completely and go with a big turbo.... the reduced parasitic drag is probably worth 50Hp,  

I prefer good MPG so I don't see e85 on my radar. 

[CajunFries]

LT4 is a bit cheaper if your goal isn’t super high. It is a smaller blower. So if you’re trying to get more.... you’ll need to really port it out and that ain’t cheap.

E85 is easy to run if your fuel system have enough room for it. I would say stock cam blower and E85... you’ll probably be limit to about 450 (depends on what dyno). That’s with an upgraded low side pump/ stock high side.

With either blower .... you would want to find a reputable shop that can dyno tune Gen V LT engines. It is wayyyyyy better than any mail order tune.

If you got a 5.3 and want a decent amount 400-500... there’s a guy goes by the name “Cee Ward” on FB. He’s selling his SLP 1900 for like 3k complete. It’s too small for his 6.2 and his power goal.


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[flyingfool]

its a nice package i have to admit vs a turbo setup.  DO i require LT4 injectors at 450 hp or will the stock units be fine on 91 fuel?

 

can i run the AFM cam and have it active during low engine loads?

Edited January 9, 2021 by flyingfool

[CajunFries]

its a nice package i have to admit vs a turbo setup.  DO i require LT4 injectors at 450 hp or will the stock units be fine on 91 fuel?
 
can i run the AFM cam and have it active during low engine loads?

With turbo. I’m sure stock fuel system will be able to handle it.... but I would still upgrade the in-tank. With a blower... you’re be pretty close to maxing them out. That’s on 91....
I’m sure you can run the stock cam. Idk about having it being active tho.


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