charger21

Thinking of getting the parts together for a LS1 horsepower upgrade. I work for GM parts, so I want as many GM parts as I can get because of my discount Thinking of LS7 cam, LS6 heads, and I already have LS6 intake. Car already has LT's, Blackwing intake, and Corsa exhaust. As far as non-GM parts, I am thinking Katech chain, and ATI damper. How does this combo sound? I will also have it tuned. My goal is around 400-430rwhp. Any opinions?

DIXZ

If you work for GM Parts why not go with a LS3 crate motor or and LS7?

racebum

ls6 heads and the GM LS hotcam, has been an easy 390-400whp combo with headers, a good air intake and the ls6 intake manifold for over a decade

this makes a really cheap combo as you don't have to change valve springs, pushrods or do anything custom

i'm not aware of any GM cam that will get you to 430hp but it could easily be done with something from texas speed or the like. most the GM cams have tame valve lift and ramp rates. great for road racing and mileage, but not for milking every last hp

charger21

Because THOUSANDS!! more:-)

martysauto

Ls3 heads r cheap and flow great, used with the ls3 intake and 90 mm tb and a good aftermarket cam you will easily hit your goals.

racebum

i didn't think those fit the ls1 bore spacing?

martysauto

Sorry, brainfart I was thinking of the 4.0+ bore. I have been thinking of going with a 408 in my next build.

charger21

Anyone else?

NukeC5

Everything sound good for your goal. Head porting would get you to the higher end of your goal. But thats obviously not a GM offered service.

alxltd1

Are you ruling out a Nitrous kit?

charger21

Yes

Bill Curlee

QUOTE!

"My goal is around 400-430rwhp"


Stock GM Cam of any LS engine isn’t going to get you to the higher end of your goals! Best source out an aftermarket cam! The LS6 heads will get you a little boost in compression and flow a little better, You will need some porting.

Some recommendations if you’re doing a cam swap regardless of which cam you use:

- Purchase new LIFTERS LS7 lifters are a good upgrade
- New Melling high volume oil pump
- New Lifter buckets!
- New Comp Cam rocker trunions
- New pushrods (properly measured with a pushrod checker
- MANDITORY New Valve springs
- New valve guide seals
- New /used 36 lb/hr injectors

Please consider using:

- ARP Head Studs. Much improved over the torque to yield OEM Bolts that are mandatory replacement parts.
- ARP Damper Bolt

Have you considered LT SS Headers? The exhaust system will be the choke point after you do all the other up-grades.

If you have a MN6 you may need a new clutch after you add that power.

If you have an automatic, you will need a higher stall speed converter.

Bill

neutron82

what kind of budget do you have?... I agree with bill on an aftermarket cam, I would not go through all the trouble of swapping a cam just to put in a factory cam... I would spend a little more for a better cam with supporting mods... even with a mild cam, ls6 heads, and your current setup you can easily hit 420-430rwhp