usnfenix

iTrader: (11)

so ive decided on a f1 procharger for my forged ls swap and now im looking for a centri-blower friendly cam to match. heads are more than likely going to be 317 heads as ive heard they are great for boost. power goals are min 650rwhp to max 800rwhp, with a matching torque curve.

josepy121380

iTrader: (21)

If you have the right tuner you do not need to run such low compression.

I love the brute speed cam that I have in my car.

http://shop.brutespeed.com/Brute-Spe...d-Camshaft.htm

02LS1ram

iTrader: (17)

I have the brute speed cam also and it works great!!! You can't go wrong with it

I8UR4RD

iTrader: (16)

brutespeed blower here as well. Also the 228r is good, ECS has one, thunder racing sells one, but they all kind of fall short of the brutespeed one IMO.

4kiro

Just ordered the same cam, going in my stock shortblock LS1 with F1A. Can't wait to put it in and hear it.

The Alchemist

iTrader: (19)

I'm running a 227/235 on a 113lsa and it works really well. Great overall driving experience with it.

usnfenix

iTrader: (11)

ls1 block and a f1? from what ive heard thats not a good combo, the cylinder walls are too thin and shred like wet paper past 600rwhp or so.

ls2 goat

You heard wrong.

usnfenix

iTrader: (11)

youve got data to back it up? ive got two ls1 blocks in my garage that im not using for the swap based on this info. most searches on this site yeild that its not a good idea based on my power goals. sure i see lots of guys with stock bottom end ls1 blocks and maggies or p1sc's but how many on f1's? im telling you some people say its in the tune but the ls1 block wasnt made to take 850rwhp.

RacerBill

iTrader: (20)

OP, I have a nice blower cam for sale that I used with my 402 and F1A. It made 760rwhp and drove better than my old H/C/I LS1.

Oh and I have see plenty of LS1 pushed past the 700HP. Cylinder wall ARE NOT TOO THIN.

HRHohio

My understanding is that the issue with stock shortblock LS1s (over 700 rwhp) is not the cylinder walls themselves, but the pistons and connecting rods. When that lets go, its a mess. Maybe a few too many connecting rods ripping up the cylinders has created a myth about the cylinder walls in general being too thin. But I guess there are some out there that have been successful pushing the limits.

(RacerBill... just for clarifications sake, are you talking about stock piston LS1s pushed past 700 RWHP? Thanks in advance!!)

usnfenix

iTrader: (11)

well if i built a ls1 it would be full forged internals of course

my concern is power. what with the ls1 being a good motor but it has been replaced by ls2,3 even the ls7. my thinking is why build a forged ls1 when i can build a forged ls2 and make more power. the ls3 and 7 are outside the margin for how much id want to spend building just the motor/tranny. the vette needs money in other areas too.

MadIceV8

iTrader: (12)

The crank is usually good to 900rwhp. The aluminum block is pretty strong as well, but a 6.0 iron block will be ideal if this is just a drag car. Regardless, you should run forged rods/pistons to handle the power past 500rwhp.

As for camshaft selection, take a look at Futral, particularly the F7. Speed Inc also has a nice selection of boost camshafts.

vmapper

iTrader: (8)

Well, just like in my situation, i coudnt wait, bought a 2005 CTS-V, which came with the LS6. Now I have a motor right there could pull and do up, or do I waste money to get an LS2, which I couldn't agree more, would be better...
347 or 370 ? Wish I waited for the 06... but I didnt.
I chose forged 347 w brutespeed blower cam but Im not using an F1, only a D-1SC....

RacerBill

iTrader: (20)

No, I was talking about LS1 blocks, not stock pistons/rods/cranks.

usnfenix

iTrader: (11)

this will be a car that sees the strip maybe 3 times a year. it will be a weekend/sat night street car.

if i can honest to god build the ls1 block to handle 650rwhp to i think i can tone it down to a max of 750rwhp in a 79 vette id rather do that, i know the ls1 better and already have a good deal of ls1 parts, plus two blocks. ( one is being used as a coffee table)

stevieturbo

LS1 block will handle 650 no problem at all.

As for cams, it would be difficult to select a cam that would yield bad results on an LS.

Just pick a cam that gives you the driving characteristics you want, and the blower will just make it better.

usnfenix

iTrader: (11)

yes maybe 650 at the crank but again im looking for 650 to the rear. with growing room to 750 to the rear once im used to driving/launching it.

HRHohio

So just to summarize the block issue...

LS1 STOCK Shortblock (i.e. stock pistons/rods) max out around 650 rwhp on a good tune.

LS1 BUILT Shortblock (i.e. Forged pistons/rods) is good far beyond 700 rwhp on a good tune.

So... usnfenix if you're going forged anyway... not an issue...

4kiro.... unless you go forged... be careful...

stevieturbo

nope, LS1 stock shortblock with boost is a burning fuse. It will fail...just not sure when.

From his posts, he just doesnt want to use an LS1 block which is his choice.

If on a tight budget, consider a 5.3 build.