Run LS3's with the FAST 102 and TB. I would think you would be in the 520 to 530 range. Maybe more...

 

thats at the wheels?

 

You bet...

 

No he can't. He is building a LS3 427. 4.100 stroke. LS7 heads can not be used with a 4.070 bore.

 

oh ok. well thats perfect.
thats what im shooting for =]
finally some good feelings. haha

so ls3 ported and polished heads,102 intake, 102 tb. long tube headers. for the bolt ons.
top of the line valvetrain will be used.
i thnk ill go with 11.5.1 compression.

i want something streetable that i can also add boost later on to.

i want to run about 5-9 pounts.

11.1 compression willll be ok for that right?

 

ill be running a 4L60E from rossler transmissions. and a 4.11 rear end.
what stall should i run for a 600hp at the crank motor.
i want it to be streetable. VERY streetable.

 

That is a ton of compression for boost. 11.5 should be fine for N/A id get it down alittle closer to 11.0-1 so you can run more timing. That 11.5 is going to eat some of your spark advance, unless you plan on going with something higher than 93 octane. If you want to run boost you might want to consider considerably lower compression.

 

so in the future if i want to run boost. i should set it up RIGHT now for like 10.5.1? so that ill have room.

cause i definitly want to run this thing on pump gas.

 

For what the OP has listed for criteria, I agree. The stock LS3 has big ports and doesn't need a lot of extra porting to support big cubes if the OP is keeping the cam mild. Some clean up and a little valve work along with a CR around 11.5 should come in well under his budget. Hogging the heads further with a mild cam, even on a stroker, would seem to be counterproductive.

Edit just saw the FI post. 10.5:1 would be better if a S/C is definitely coming later on. If you're less than a 100% sure, I'd still go close to 11:1 and figure a cam change can be used to bring down the DCR if needed. Really depends on whether you are thinking 6lbs or more like 10lbs.

 

well. i want to run pump gas regardless, with the CR at 11.1 would i be able to run 10 pounds? or more like 5-6.
the less boost is better in my opinion (less heat and more reliable) (the boost will be through an sts application)

rememeber, all im wanting to acheive is around 510 to 520 at the wheels. anything more than that im not interested in.

Hell. i could go all out and make 800 fwhp. but i don want that. i want a fun car. NOT a rocket ship. i just want something that runs elevens.
i mainly want something i can drive around town without taking a second mortgage out for fuel costs. If i want to drive a fast car, ill borrow my friends 1200hp c5 vette. which is the inspiration behind this whole build.

 

i want to make a zl1 replica ss camaro,
its black. already has the paint done/ all i have to do now is get the power.
600 n/a or 700 f/i fwhp is what im looking for.

 

Oversite...I stand corrected.

 

It's all good. I wish i could bolt some LS7 heads on my 4.070 bore. I'm really considering the PRC small bore LS7's when they are released.

 

why though, why dont you just use damn ls3 heads. if they arent that different in performance.

 

Your stall will depend on your cam and power curve. You can give your build specs to any TC company and they can set you up. I would think in the 3500 to 3800 would be as high as you would want to go and keep street ability with the 411 gears. A damn good tuner will be needed to achieve your goal. All the parts in the world won't help if you got CRAP for a tune....

 

I do have LS3 heads. Ported by Total Engine Airflow. The small bore LS7's are said to flow 390 cfm+ If they end up flowing close to or over 400cfm im going to swap my ported LS3's for the small bore LS7's. My ported LS3's flow 370 cfm at .700 You can not beat a ported LS3 price wise. They are a damn nice head for the price but if i can pick up 20+ HP through out the power cure by swaping on small bore LS7's then im all about it.

 

Dr J Motorsports has smal bore LS7s now. I am curious how well they could perform. Their LS3s beat every head with a 1.7 rocker in the Hotrod shootout.

 

What is this Dr J that you speak of? PM me a link? lol

 

mee two =]!
i want a link.

 

Why are you looking at FI? 510 - 520 RWHP with an M6 is not hard to achieve in a stroker w/o a massive cam. Stick with the 11.5 CR, lightly ported LS3 Heads, and a FAST 102. Won't require a huge cam either.