How much boost on this shortblock?
How much boost on this shortblock? Hi guys, ive got a set of LS6 heads over at absolute that hes going to port for me along with an LS6 intake and one of his new 80mm TB's. I just need to tell him what stage and they are done. Problem is i cant decide if i want to build an ALL BORE 387 application or do this
Polished & Magnafluxed Stock Crank
· Diamond Forged Pistons / Flat Tops Or Dish
· Diamond 4130 Chromemoly Wrist Pins
· Diamond Proselect Ring Set / File Fit
· Eagle H Beam Connecting Rods
· Federal Mogul 152m Main Bearings
· Clevite Cb663h Connecting Rod Bearings
· Arp Main Studs
· Blueprinted & Fully Balanced
· Assembled
Which will run me around 2,700 vs the 6K for the 387.
What i want is the most reliable way to 500 RWHP.
Now, do you guys recommend i achieve this by buidling up my 346 like above and doing a blower, or going with the 387 build up. The cost will be about the same because the 387 will need the bigger stage 3 heads, and the blower will make up the 3k dollar difference in price between blocks. Im thinking i have more potential for even great power with a blower. But will it be reliable. The car will be stree strip. I will drive it on the nice weekends and to work on fridays or something. So, in conclusion
If i do the 347 build up, are there any parts not mentioned above you think i will need.
How should i have the LS6 heads ported if i go the blower rout.
What Diamond Pistons should i run?
And lastly, how much power do you think i can safely make.
Thanks for your time
Scoobs
Polished & Magnafluxed Stock Crank
· Diamond Forged Pistons / Flat Tops Or Dish
· Diamond 4130 Chromemoly Wrist Pins
· Diamond Proselect Ring Set / File Fit
· Eagle H Beam Connecting Rods
· Federal Mogul 152m Main Bearings
· Clevite Cb663h Connecting Rod Bearings
· Arp Main Studs
· Blueprinted & Fully Balanced
· Assembled
Which will run me around 2,700 vs the 6K for the 387.
What i want is the most reliable way to 500 RWHP.
Now, do you guys recommend i achieve this by buidling up my 346 like above and doing a blower, or going with the 387 build up. The cost will be about the same because the 387 will need the bigger stage 3 heads, and the blower will make up the 3k dollar difference in price between blocks. Im thinking i have more potential for even great power with a blower. But will it be reliable. The car will be stree strip. I will drive it on the nice weekends and to work on fridays or something. So, in conclusion
If i do the 347 build up, are there any parts not mentioned above you think i will need.
How should i have the LS6 heads ported if i go the blower rout.
What Diamond Pistons should i run?
And lastly, how much power do you think i can safely make.
Thanks for your time
Scoobs
ok as a blower guy, i like the all motor aproach. You will wind up spending alot more $$$$ with fuel systems and drivetrain componants. Jay could get you right around 500 rwhp with a set of his stage 3 heads.
TECH Senior Member
Joined: Nov 2001
Posts: 11,603
Likes: 0
From: Chi-Town, IL
Just make sure you get the final compression ratio to around 9:1.......
The bigger the CC in the head the better.......
I'm running 73cc chambers on my current setup.......TEA S2 5.7L heads.......
The bigger the CC in the head the better.......
I'm running 73cc chambers on my current setup.......TEA S2 5.7L heads.......
