dangerguynikolai

Hey guys, danger guy nikolai here whats good? I am trying to estimate rwhp because i have a 4l60e and im trying to see how screwed im going to be So here is what i got so far.
A 1999 LS1 In My Trans Am.
LS6 intake manifold
Ported polished tb and maf housing
Free mod
Bigger lid
Asp 25% under drive crank
15% alternator
MSD super conductor wires and ngk cold plugs
No air or egr
Hooker 3" super comp long tubes straight piped into slp lm1 resonators
I started at 280rwhp and have 333 rwhp right now (dyno.jet dyno) so I gained about 53 to the wheels but i do have 3.23 gears in the back so it may actually be a tad bit higher.
Im putting her in the shop friday to have
Clay smith ls1 custom cam 228 230 112 lsa .585 lift
PAC 1618 springs
Jegs 7.4 hardened cromolly pushrods
Comp seats seals 2 piece valve locks
And trunion upgrade kit
(All on stock heads)
Melling high pressure stock volume pump
Ls2 timing set
Denso 36lb injectors
Racetronix 255 drop in pump
Sooooo how much rwhp should i get
Hypothetically speaking?

Thanks guys

Nikolai

Bspeck82

380-390ish

dangerguynikolai

Really only 50 or 60 more? Id have thought it would at least break 400?

Tuskyz28

Auto cars read lower than manual cars on dynos.

Another thing thats go hold you back in the factory heads.

The LS6 intake you have is OK but its not as good as a FAST Intake.

dangerguynikolai

Well im going for a super street stock/street prepared scca build so stock heads and the ls6 manifold. So i may read 385 390 dyno but crank i should be prob what 500 or so?

G Atsma

More like about 450. Drivetrains do NOT absorb over 100HP.... lol

dangerguynikolai

Im already at 413 now lol your saying im only gonna see 37 out of my cam? Bruh i highly doubt it

G Atsma

I thought you said "385 390 dyno". Where do you come up with 413, BRUH?? LOL
If you think you're gonna get 500 crank from a chassis dyno reading of "385 390 dyno", you are DREEEEMING...
I never said anything other than my above posts. No mention of 37HP cam gain. You're hallucinating.

dangerguynikolai

? No the guy below me said 380 390 ish im at 333 rear or about 413 crank as of now. So i was assuming to be conservative 80-90 more horse so about 500 crank? Cam fuel valve train and oil pump should be good for about 80-100 crank id think.

G Atsma

Right here... bruh.

dangerguynikolai

First chill jesus christ im just asking questions, god if you treat every new guy like this then im scared for the f body community. Seccond i said about 500 i.e give or take 20 horse or so. I mean you tell me senior member guy how much you think i should gain ?

G Atsma

OK. Bspeck82 and TuskyZ28 are both pretty good at eyeballing HP numbers, so you can believe them. And the thing is they're just numbers. If the car is doing what you expect, great! If not, then look around and see what needs attention.
What caught MY attention, and I might have misunderstood (not the first time...lol) is the number disparity of engine dyno vs. chassis dyno. It's different for every drivetrain combo, but seriously rounding the numbers usually gets you to about a 50-70 HP difference. Never 100 or so...

dangerguynikolai

Ok, well see this is good to know lol beats yelling at eachother. I am running an auto with the perf 3.23 rear so i figure my rwhp numbers are gonna be a little lower than actual crank numbers. Stilll if im 480-500 i think it should be more than enough for my T/A

Bspeck82

HP numbers begin to become more irrelevant (to a point) when factoring in driving conditions, race suspension, tires, weight, gear/torque multiplication. I wouldnt worry too much about it. Just ensure you are building a thought out combo of parts and it will perform fine.

dangerguynikolai

Well i have enough air enough fuel and all the failure points have been dealt with execpt the lifters but im keeping it under 6200 so should be good. Only points of concern would be the 4L60E tranny and the 10 Bolt rear but i dont drive hard so she should be good

99 Black Bird T/A

iTrader: (4)

Honestly, I think part of the wheel HP gain depends on a couple of factors:

1) skill of the tuner and how far the tuner is willing to push the car.

2) type of dyno used as different models yield different results. BtW some dyno

3) condition of the 4L60e transmission & what sort of stall converter is being used.

228/230 cam w/.585 lift on a 112 LSA sounds like about 50 whp to me with the above combo of parts. Roughly 385 whp on a typical DynoJet. Locking the converter on the dyno ~395 whp to maybe 400whp on a perfect day.

If the engine is in good condition, I wouldn't hesitate to spin as high as 6,800 rpm if needed.

BTW - a typical 4th Gen fbody driveline seems to eat about 50 to 75 hp from I've seen.

400whp 400whp would probably be about 465 hp to 475 flywheel hp on an engine dyno