i tend to lean toward high compression, but i also will be running race gas primarily when built

 

e85 is a beautiful thing, and ported heads

 

the increased copmression will yield much higher tq numbers

 

there are other ways to increase cylinder pressures, gm also blew up about a dozen blocks when perfecting there ecotec build, there were also utilizing aftermarket cams which effectively dropped compression back down

 

i doubt that they blew up a dozen engines to perfect it the key to higher compression is all in the hands of the tuner show you dyno graph of 300 hp

 

actually I was referring to the ecotec race motor, specifically there nitrous set-up

 

i personally planned on staying on stock compression of 9.5/1 bc my goal is to have 450 - 500 in a tvs car with a 100 shot

the main thing will be getting dialed in with a 2.6 ring and the bottle..

running both meth and either a nitrous express kit or zex kit

and the bottle will obviously be used sparingly.. its gonna be more for the track to trap 125 consistently ... not so much for highway

 

a bunch of my friends say that too, until they come back the next weekend and tell me about how they have filled up their bottle 3 times throughout the week

problem with power is that once you get to a high level, you don't want to go backwards... it ******* kills me to drive my s10 cause when you press the gas it just makes more noise and doesn't accelerate. **** bothers me so bad i'm putting a turbo on it too, soon.

 

god ur so right too lol i cant even argue that.. so ill reword it.. its "SUPPOsED" to be for track only lol.. but ur absolutly right.. itll turn into more than that

 

Weak sauce...

 

thankyou bryan lol

 

Topend work will come into play on your compression choice, cams specifically. Depending on the overlap and such.

Personally, if you plan on running E85, raise compression. If you are doing pump, or even race gas, I wouldn't.

I've personally built 3-4 engines that raised compression to 10:1. But they all had cams that lowered effective compression of the motor, so it broke even basically.

All depends on you're setup.

 

yepp motors in the process of being built now.. im waitin on a few parts to send out the block to get it resleeved.. and im going with stage 2 zzp cams with adjustable cam gears.. id go stage 3 but the powerband is way to high.. im gonna be redlining at 8k not 10,500

 

if your options are upping boost past the compressors efficiency range, or upping CR, i;d rather up CR. So IMO it depends on how many CFMs the OP is currently pushing through the TVS
ZZP's 11.0:1
arent you referring to when they were TRYING to blow up the stock motor to find the weak points?
i can agree to this. IMO i'd up it to 10.0:1 if you plan on cams, or are already at peak efficiency with the TVS. If you plan on E85, then i'd say go to 10.5:1 or 11:1

 

My car, Dan's car, Al's car, Fran's car, Shaun's car... I believe there are also a couple guys on RL Forums.

The first 4 are still running to this day the way we sold them...

I'm going with 10.5:1 on the current car.

They over exaggerated a little. Stage 3's would of been fine with a high TVS build. Close to GMR cam specs.

 

i havent bought em yet.. im still in the final stages of that