383 vortec

[thegawd]

Your probably absolutely right there Peter! Efficiency vs Power, dollars vs how far that dollar goes.

I only put ethanol free 91 in gas cans and so all of my small engines, my 56 tractor and even my Sierra thats only traveld 85 kms in 6 years so far all gets the 91 and that's only because the 91 seems to be the only option around me for ethanol free.

 

[thegawd]

I replied at the same time man, I agree with ya for sure there. also my trucks are 100% stock and I'm not going for speed but rather longevity and reliability.

 

[Erik the Awful]

"Ethanol free" is worth about a 10% price difference, no more. As far as aging better, straight gas doesn't last very long any more either. As far as I'm concerned the only difference is the economics of that 10% price bump.

On comp cams website it said the camshaft works against a restrictive exhaust system. I called them for clarification and the rep said I was fine to run the stock exhaust.

That sounds like advertising speak for "small cam".

 

[Devon 11]

It’s a marine cam, I told them I wanted a cam that had mostly power down low and that what they recommended. I think the initial guy even said something about it should keep vacuum pressure up. I hope it’s not a small cam lol.

 

[Supercharged111]

It’s a marine cam, I told them I wanted a cam that had mostly power down low and that what they recommended. I think the initial guy even said something about it should keep vacuum pressure up. I hope it’s not a small cam lol.

It is. Did you do 1.6 rockers too?

 

[Anthony Ray]

I’m shooting for close to 400. Thats the limit for the stock injection system.

Did you up grade your spider injectors to the new GM performance ones? They changed it to an MPFI system which responds faster.

 

[Devon 11]

Yeah I did mpfi injectors a while back and 1.5 rockers if I go for any more lift I’ll have to get different heads

 

[Devon 11]

I decided on 500 lift because that’s where the machine shop said they could clearance out to without costing more than it was worth when compared to just swapping out aluminum heads

 

[CNRED]

Gonna be fun!

 

[Devon 11]

So comp cams website recommend the high energy pushrods they sell. I also bought my springs according to the recommendation on the site. I was wondering if anybody had some input on this. It looks like those are their cheapest line and was wondering if they would be fine. Spring seat is 132 and spring rare is 322. Am I being paranoid that $50 pushrods are too cheap.