zapp109

iTrader: (13)

So my father is redoing his 73 Z28 and wants LS motor, ofcourse he says he wants a 454 LSX. Thats 10k without any accessories. Now I know how to make power boosting and efi but when it comes to this setup im fairly clueless. So here is what he wants, 650 HP with a carburetor. Figured someone might be able to point him in the right direction. I told him lets get like a ls3 and stroke it out put a set of AFRs on it.. But im just guessing.. Any good crate builders out there for decent price?

Oh and pump gas I should add this is his street car.

Thanks

speedtigger

iTrader: (16)

You can get to 10 grand pretty easy trying to build a 650 HP engne. You can get to 650+ HP with a Stroked 6 liter or LS3, but it will have to be a pretty rowdy engine. The 454 will do it more easily.

Here is a 675 HP engine for sale in the classifieds that will give you an excellent blueprint for what it takes to make that kind of power:
https://ls1tech.com/forums/parts-cla...hp-6500-a.html

Now 525-550 HP on the other hand can be pretty easy to make with a 6 liter and 600 HP is easy to make with a Stroked 6 liter or stroked LS3.

Doug G

Check out 3Pedals build (N/A) https://ls1tech.com/forums/carburete...gine-dyno.html

AFR....

Slo69

iTrader: (1)

PM sent

ZONES89RS

iTrader: (25)

A 454 LS can make 800 on pump gas, so 650 is easy.

holley505

iTrader: (1)

I have a Texas Speed 418 (LS3 stroker) with AFR 205 Cat Head VIC Jr intake and Holley DP Carb with MSD controller and Speed Hound Long Tubes... 246/256 112 LSA cam

Guessing I make in the 600s Never Dynoed... But I can run 10s on Motor with 3.36 gear at 3500 stall. PUMP GAS.

I believe this is the best BANG for your BUCK... I have half the cost of a crate 427 motor in my motor.

fast89stang

iTrader: (2)

I dont know what mine makes for power, but its a carb'd 6.0 with custom cam, milled stock heads and sbe. Car weight is 2920. I thought it weighed 2850 to 2875, but we just weighed it. Its been 6.28

speedtigger

iTrader: (16)

If I were to guess, I would say both yours and my 6 liter would make between 525-550 HP on an engine dyno.

TXsilverado

iTrader: (18)

Junkyard 5.3 and put money into a home brew turbo kit and dominator efi. Done! If the 5.3 pops, go to the dollar general and buy another.

lsx68firstgen

iTrader: (22)

For what it's worth my l92 6.2 with true ls3 heads milled just a tad for clean up, lsr281 EFI CAM, vic jr carb intake and holley 850 reworked by aed pulled the wheels a couple feet on the street in a 3000# 68 camaro with a stock 4l80e 3000 stall, 12 bolt 4.11 gears. Easily a 10 second car but to be honest I never had it at the track.

Doug G

http://www.hotrod.com/how-to/engine/...gine-cam-test/

Just an idea of what cam in a 6.0L does.
227/235 @ .050