View Poll Results: What compression ratio got you to the 800RWHP please post which: turbo or centrifugal
8.5-8.7
6
10.71%
8.8-9.0
9
16.07%
9.1-9.3
15
26.79%
9.4-9.6
13
23.21%
9.7-9.9
1
1.79%
10.1+
12
21.43%
Voters: 56. You may not vote on this poll
Poll: What compression are you running at +/- 800RWHP?
Thread Starter
Teching In
Joined: Sep 2009
Posts: 27
Likes: 0
Poll: What compression are you running at +/- 800RWHP? Hey guys! Got my fully forged shortblock in from the shop, looking to get around 800RWHP out of it. Its time to figure out heads and compression ratios. PLEASE HELP! Also, let me know if you are running turbo or centrifugal. THANKS!
Planning on running 800rwhp or so daily and 1000rwhp very rarely as my max rwhp at least with current engine,and fuel setup.
Builder recommended 9.5 if was going to run alc /meth injection and will but for now car seems to be doing fine on pump 91 or pump 94 e10. I have reasonble timing I think and not seeing really any knock retard to speak of.
Car seems still pretty zippy off boost so pretty happy with my compression choice.
Builder recommended 9.5 if was going to run alc /meth injection and will but for now car seems to be doing fine on pump 91 or pump 94 e10. I have reasonble timing I think and not seeing really any knock retard to speak of.
Car seems still pretty zippy off boost so pretty happy with my compression choice.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Thread Starter
Teching In
Joined: Sep 2009
Posts: 27
Likes: 0
WOW! Thanks for all the votes. I wasn't expecting the range to be so broad at that kind of HP. I was thinking of going turbo and 9.5 but now not sure if the CR is going to be low enough. I don't have E85 handy.......
8 sec potential, 12 sec slip
iTrader: (50)
Joined: Apr 2002
Posts: 4,092
Likes: 2
From: Savannah, GA
Yes, I have an alkycontrol meth kit and am not afraid to use it 
lol.. How much I'll actually need still is to be determined. I'm thinking it won't really need much at all. Ideally, I'd like to get the tune done without any needed, then just spray a tad for extra cooling and higher octane just for a bit of a safety net. I definitely don't intend to supplement the fuel with it. I think the 83# injectors should be sufficient.
lol.. How much I'll actually need still is to be determined. I'm thinking it won't really need much at all. Ideally, I'd like to get the tune done without any needed, then just spray a tad for extra cooling and higher octane just for a bit of a safety net. I definitely don't intend to supplement the fuel with it. I think the 83# injectors should be sufficient. 
Setup was for 9.3:1, but we never verified it. Running 18-20*, 92 oct with pure meth, Alky Ctrl, 1 jet, should be a little over 800rwhp when I get the bugs worked out. The exhaust is done (see thread in External forum) and the valve springs are in the garage....