sinful7

iTrader: (1)

I want to build my ls1 motor to handle some boost from my procharger d1sc, and I still want to hold 6500-7000rpm redline. on a boosted motor I know this is more stressful on the internals with the rpm and boost.

my plans are 10psi on a 347 ls1, with all the bolt ons, making around 650whp and shifting 6500-7000rpm, I am thinking 6800rpm is where id want to go cause thats where my cam drops off.

what would I need for internals to be able to sustain that abuse and it live a nice long life?

I know forged rods and pistons and prob better bolts. but what ones and such? would it require arpm studs? and what piston rings to use? will eagle h beam rods be alright with arp2000 bolts? how about the scat I beam rods with 7/16" arp bolts? pistons I will use diamon custom ones to get 9.5:1 compression with my patriot stage 3 heads.

I already have ls7 lifters, and chromoly pushrods. just worried about the block. what do you guys think??

Packy

iTrader: (11)

An LS1 or LS6 block would be fine for your power level want. If you wanna turn more than 6800 I would look into a forged crank also. I used diamond pistons/rings with Lunati rods, stock remanufactuctured crank, LS1 block with all new internals/studs/lifters, LS6 oil pump, LS6 valley cover and PCV system.

RS_SS69

iTrader: (31)

We have about 5 cars running this setup here and have well into 20k on each one and they run fine.

Stock crank
Callies compstar rods, arp 2000 bolts
Weisco/diamond pistons all 9.5:1
ARP main studs and head studs
4 of the 6 are on stock ported heads and ls6 intake, one is at 8psi with 610 rwhp the others are 12-16psi power is around 640-800rwhp.

All are 6 speed cars, except one, they all have strange or moser axles.

ss.slp.ls1

iTrader: (36)

^^^That is the way I would build it.

sinful7

iTrader: (1)

Sweet setup but do those motors spin 6500+rpm at those boost levels?

bad6as

iTrader: (17)

rpm depends on cam specs. there are stock bottom end motors going 7k

RS_SS69

iTrader: (31)

2 spin to 6300rpm cause they didnt want to go higher, the other 4 go to 68-7000rpm.

We have been 200+ in 2 of the cars at a air strip pulling all the way to 6th so these cars are NOT driven like sissies they are driven hard alot.

Bob@BruteSpeed

iTrader: (16)

http://www.exoticperformanceplus.com...Car.php?car=54

Check this build out that we did at the old shop. Bob

sinful7

iTrader: (1)

the cam is the big factor on rpm's but when you add boost into the picture it changes it around. 7000rpm natural is a lot different than 7000rpm with forced induction thats why i asked if they were spinning that high.

RS_SS69

iTrader: (31)

The 4 that go 6500+ have small cams, like in the 224/228 range.

sinful7

iTrader: (1)

alright cool.. so it would be safe to say the motor will work at 6500-7000rpm with a mild boost cam and a fully preped forged bottom end.. i think i can use the stock crank for this level also, just toss H beams and forged pistons and have at it with some good bolts/studs.

RS_SS69

iTrader: (31)

^^^Yes it should work out just fine.