done pretty quite of bit of 402-416's and all being withing 500-550 on motor....all these with mild nitrous cams... back in the 414 in my truck was running a 12.5 to 1 and made 600+ but was peaking at 7800 also..

500+ is very easy acheivable, 600 plus is gets a bit more expensive in valvetrain parts being the most important ...the topend part...ie. heads,cam,etc...but 12 to 1 u can still run pump gas though....

but what do i know, i only run 13's...

good luck skeet

 

450rwhp/440rwtq with 232/238 .600/.600 lift 113 lsa. CR a very low 10.8
Best 1/4 mile pass Oct 09 11.78 and I have leaned her out a bit this year and have been running some 7.40's at local 1/8 strip(at memphis this would be some high 7.30's in 1/8). Memphis closed so no 1/4 mile passes so far this year.
shift @ 7,000 rpms.

Goodluck Skeet

 

Unless you spin it I don't think you'll reach your goal of 600 N/A. I would suggest upping the compression into the 13's and running race gas since it's gonna see very limited use.
Subscribing for the build!

 

gonna be close guys, i have a good feeling something great is gonna come out of this setup

time will tell !!


yeah i know its a year old, and i still never gotten any realistic numbers, i been doing more research and came up with a 560 rwhp setup!! but IIRC i seen a 570 somewhere!

 

I guess ill throw in my 2 cents...

my 11:1 408 with stock 317 heads and tvs1900 at 7.5lbs put down about 600, granted this was on a more expensive drivetrain, so I would guess 650ish in something like you would be running.

basically same engine with 9.5 compression NA was around 400 just going by feel

If you plan on spinning it 7k+ have you thought about solid rollers?

 

600 rwhp will be tough man , i see 550 for sure . your trans absorbs more power than the t56 guys .

ive seen a few 418's make just over 700 @ the crank built by a friend.

 

yeah i thought about a solid roller, and damn near changed my mind in doing so, wouldnt take much if i decide to go solid roller, change of lifters and cam will get it done.

i hear ya, it'll be really tough, i doubt im there but it feels close, maybe 570 i had to pull the 4" intake tube cause it was a huge restriction, it made a 8-10 kpa difference , all i need is the trans to hold up lol which im prepared to go th400 when necassary. anyway time will tell, we'll see what she does on the track this evening ( tonight) im probably expecting to much from this setup but it feels like its definitely there..

 

Looking forward to it David. Gonna be an interesting night getting her to hook up again

 

Keep in mind you'll need modified spring pockets, which may not be possible on the l92s, higher lift springs, adjustable rockers, maybe a double roller chain and larger pushrods depending on what you have now. The Lsx intake is going to be a restriction in the area that a solid roller would really shine, so add a single plane or sheetmetal intake in their as well. It wont be cheap but it will definately be an awesome setup. You might also check out some of the E85 setups on the corvette forum. Those guys are putting down some amazing numbers with hydraulic cams, plastic intakes, and high compression. E85 would require major attension to the fuel system though. 600 na is going to be expensive anyway you go. Good luck. Sounds like you got a nice list of parts already. I am looking forward to seeing where this goes.