LOL-AT-UR-JDM

So I am finally starting to piece together my build. To start off I should say that I have used the search button a million times but I still have questions. I am building a boost ready motor to drop in that way I can still drive it while I peace this together. I am going to go with a LQ9 because of the extra strength. I am shooting for around 850 to the wheels. I plan to run the F1A procharger. So here come the questions. Unfortunately I only have access to 91 octane pump gas due to my location, the nearest E85 pump is about 250 miles from me. So with that in mind what is a compression ratio that I could run safely and still make my power goal? What amount of boost would it take to get there and how much boost could I run with given ratio and meth? I have seen everything online from 11:1 at 10 PSI to 8.5:1 at 30 PSI. I've read enough and got so many different answers it's enough to make your head pop. So I am looking for someone with some experience in this area to help me out. I plan on getting as much from Texas Speed as I can, but until I have decided on a compression ratio I am kinda stuck. Any help would be greatly appreciated. This is going to be a badass street car that will occasionally see the strip in Denver but not often, maybe 2 times a year. Thanks again for any help!!

Bob@BruteSpeed

iTrader: (16)

9.5/1 compression ratio and using 100% methanol with your 91 octane will do the job. With an F-1A, 14 psi of boost will get you 850 rwhp with a good engine build.
The link below is my complete kit for the 05-06 GTO. I would delete the fuel injectors and fuel pump in the options section as you are going to need larger injectors and a larger fuel pump.
http://shop.brutespeed.com/ATI-1GN30...-Speed-Kit.htm

http://shop.brutespeed.com/Brute-Spe...d-Camshaft.htm
I recommend using this camshaft, it will give your car a great sounding idle and give you the power you are looking to make.



At the old EPP shop we built an engine for a customer's 2005 CTS-V using a new LS2 block. We used a Callies 4.0 stroke crank, Compstar rods, Diamond pistons, Total Seal file to fit rings, our camshaft, an LS2 intake and a ProCharger F-1A at 14.4 psi of boost. It made 809 rwhp. We then swapped the LS2 intake for a FAST 92, and we lost 2 psi of boost but picked up rwhp. We ended up at 864 rwhp at 12.4 psi of boost.

https://vimeo.com/4192845

http://www.superchevy.com/features/0...cadillac-ctsv/

https://ls1tech.com/forums/forced-in...issue-phr.html

Check out these links. Bob

LOL-AT-UR-JDM

What transmission did you use to hold that amount of torque? I have read that the T56 magnum will hold about 700 lbs... I also have heard that the stock T56 with a twin disk clutch could hold up to 1000, I figured I should just ask someone who has already pioneered the path haha