5.7stroker

iTrader: (36)

Trying to get an idea on an lq9 370 build what all I'd be looking at having to get to run a F1A blower that will see 20-21 lbs of boost. Goal would be 1000 hp.

Wiseco 4.03" -3.2cc Flat-Top Pistons with wrist pin upgrade
Callies Ultra Billet H-Beam 6.125", ARP 2000 Bolts
K1 Technologies Crank
ARP Main Stud Kit
ARP 1/2" Head Stud Kit and machine work
PRC 260cc LS3 Aftermarket Heads, 68cc, Hollow-Stem Intake Valves
LS9 .051" Thick head gaskets
Morel lifters
Rocker Kit with Trunion Upgrade
Custom blower cam

Cesarbambam

I think you're going to have to run a bigger blower to hit that on that psi, auto/stick? fuel?stock heads?

5.7stroker

iTrader: (36)

Figure TH400, dual walbro 450's on E85, PRC 260cc LS3 Aftermarket Heads.
Might have to do a 6 bolt block with 1/2 inch studs rather than stock iron 4 bolt block for peace of mind.

lmt0705

iTrader: (7)

Don't think f1a will get you there, what belt drive do you have?

stmz28

iTrader: (9)

I had a 370 procharged F1A 18psi, LJMS cam, tfs235, holley hi ram, th400 Circle D converter, 9inch 3.50, 3780 race weight, Pump Gas 8.98@150 1.23 60ft That was like 750-800hp

It would only make 18psi and that was with a cog belt setup dont see you making 21psi or close to 1000hp you better have a 6 speed

I would put a f1x on it if you build the bottom end good enough if you want more than 1000hp. I had a f1c 10.5 and on 24psi it made like 925hp

Husker98

iTrader: (11)

Maybe 1000hp at engine. I'm just waiting on an Aster bracket and then I can see what a maxxed (8.65/4) out F1a will do on my 365.

I was thinking 850whp with 91 and meth is obtainable and a 9.xx timeslip

Monte4ever

iTrader: (2)

I'm thinking an F1A-94 will get you there.

stmz28

iTrader: (9)

I had that pulley setup with the aster bracket if its a 6 speed you should hit 850hp i dont see it with a auto

JakeFusion

iTrader: (7)

Yep. I'd run the F1A-94 as it's way more efficient. Then you can do ID1350x injectors with the Dual 450s on E85. That should get you close. I think the -94 has seen 1200rwhp before.

I'd probably step up to a Dragonslayer crank though at that power level. Pin the mains. Do 1/2" studs for peace of mind. And I'd probably go Oliver Speedway rods vs Callies Ultra since they are about the same price and the Olivers are beefier. If you push over 1000rwhp... remember, you're still using like 150-200rwhp to drive the blower. So you're at 1300HP+ at the crank. So build the motor for that.

At that point, I'd look at the Dart SHP block... 6-point 1/2" head studs, 1/2" 4-bolt splayed main caps, priority main oiling, etc. It's like $1700. So less than the LSX and reuses the stock pan. So a good option. I think Dart rates them for 2000HP.

Then something like the Jam Cam Stage 4 at a minimum (230/242 115).

simple

iTrader: (8)

Link to the 2000hp rated $1700 Dart SHP LS block?

Husker98

iTrader: (11)

Remember your belt length for the 8.65"/4" combo? The recommended 53.7" belt is to short for me

stmz28

iTrader: (9)

Not sure

1500HP

iTrader: (1)

He did not say for 1700 he it was 1700.00 cheaper total cost then a LSX setup the same

1500HP

iTrader: (1)

The SHP LS block in iron is around 2000.00 plus all the machine work needed

neverstop

lots of guys with more experience here but I don't think a LSX block is necessary for 1k hp or even 1k whp based on what I've seen. I upgraded to the LSX block and make 900whp through 6 speed with a D1SC and it was overkill and waste of money imo and the extra 100+ lbs is noticable. If doing again would have done simple iron block setup. 900whp is a nasty street car to me at least. Not going to hurt to do the 6 bolt block but just more cost so if thats not an issue then go for it.

I'd pin the mains and do 1/2 head studs if you can though.

and another vote for f194a to get you there since you'll probably want to rev that motor and I was told my procharger it has the lowest drag per psi/hp of any of their blowers in that size. so lower IATs and less belt issues. if i was going to swap my d1sc that's what I'd go with. F1a/c are super super old tech.

Ultra billet rods seems like way overkill on a 4 bolt block too.

Blown06

iTrader: (32)

Going to a block with a 6-bolt head stud configuration is not a waist of money on a 1000 hp build in my opinion....unless you just like racing dyno's.

95-1LE-Z28

iTrader: (33)

I'm running the same pulley combo and the K080537HD worked just fine for me.

Detoxx03

iTrader: (14)

F1A-94 with a dragonslayer crank. The drivetrain must really hold the f bodies back from making power cause like neverstop my car with a little ole D1 makes over 900 but on corn.

Blown06

iTrader: (32)

I've often wondered about that. For example, how would a 6-speed trans/10-bolt rear take any more power to turn in an f-body vs. a vette???

Bob@BruteSpeed

iTrader: (16)

If you go six bolt then I'd go with an F-1A-94 and crank it up. Bob