1LCC

Good people of the ls community i would like some feedback on your thoughts on my build for my G-body, here's a list of some of my parts
1 msd intake
2 nick Williams 102mm throttle body
3 237 prc heads
4 stock bore lq4 block
5 magic stick 4 cam
6 42lbs injectors
7 3800 stall converter
8 4l80e trans with shift kit
9 long tube headers 1 7/8
and a few other parts, what can I expect from this build and what do you guys think I'm interested in hearing your positive thoughts

Jtm2085

iTrader: (1)

What's the purpose of the car? What are your goals? If it's more race oriented, I would so a single plane intake, different cam and a custom converter. How much does the car weigh?

1LCC

I plan on running it on the street and sometimes strip, the motor is going in an 86 SS Monte Carlo so the car weighs about maybe 4000 lbs

1LCC

I plan on stroking it later on but for now just stock bore, 400 and some change is what I was shooting for, hopefully close to 500, and still be able to run pump gas and be street friendly.

Doug G

Stock LQ4 bottom
LS3 heads shaved .050 to up compression (10.5-10.8 :1)
Similar cam (well close enough)
More stall
TH350
4.10's
although carbed.....times below @ 3420 w/ me in it. (more to dial in yet)

Johnny_M

I have the ls3 GMPP CNC heads on my car 408 c.u.
If you are going to stroke it do it now. I gapped my rings for N.A. .017 top .018 bottom and wished I would have gapped them for a power adder. If I were do it again I would go AFR 225 Cathedral ports. I know the big LS3 heads killed my bottom end(3500 lb. Car). For Engine management I would definitely go with Fueltech FT550. Most use HOLLEY EFI. I like the fueltech because of the customer support and ease of tuning and the touch screen / dashboard.

Bspeck82

for a street car I would downsize the cam. Especially at 4k lbs. Take 10 degrees out and widen the lsa by a degree or two. Everything else looks good. I'd run a fast lsxrt if you can fit it.

Tuskyz28

What model Monte Carlo weighs 4000 pounds?

My co worker has one 86 model.... it does not weigh weigh near 4000 pounds.

Johnny_M

my 78 GP weighed 3500 lbs. With steel bumpers😳

Johnny_M

I'd go 4k stall minimum on the converter. A 4L60E is a tenth faster in the 1/4 mile. For longevity a 4L80E.

Johnny_M

tuned right, you can run 12:1 compression with pump gas.

1LCC

Ok change of mind i am downsizing the cam to a 233/239 112 that might be a better combination. With the heads and intake