MeanWS6

Would a 402 be able to put down 500 NA rwhp, with proper heads, cam, etc though a TH400, 12 bolt with 3.73's?

LS1LT1

iTrader: (16)

Yes, a properly built/tuned 402 could potentially put down 500rwhp, not sure if the SLP version can though.

jrp

iTrader: (16)

through a TH400, 12 bolt and 3.73's though?

Phoenix 5.7

iTrader: (7)

whats the difference between the SLP version and other 402s

guadofreak

iTrader: (1)

with the right compression, cam and heads..hell yea!

might be tricky but def possible

MeanWS6

I was thinking about going with LQ9 heads, a 248/256 .610/.620 112 cam
I want a 500 rwhp window shaker

JF WS6

Your drivetrain is quite parasitic with a TH400 especially if you have a high stall + a non lockup converter. Couple that with a 12 bolt, I'd say with the set up you are intending on the Speed dyno you'd see about 460-470RWHP.

If you want 500 through your drivetrain, I think you need to go more aggressive. I'd go higher compression like 12:1, top quality Stage III LS6 heads and a bigger cam. If you went solid roller you'd be able to hit that mark much easier I think.

MeanWS6

So SIII LS6 heads would be a better combo with a LQ9 402?
How big of a cam should I go with?

Reckless

iTrader: (9)

Dyno numbers are not the holy grail. My lasst car made 400rwhp through a TH400, 12-bolt, and slicks. It trapped 122mph though and ran consitent 11.0's.

We have a 395 car (all stroke) that made 506rwhp, but it is a MN6 Corvette.

Blue Hawk

If you're refering to LS1LT1 comment, then take it with a grain of salt.

SLP have a reputation of overpricing their products and overrating their outputs. And some members have had bad experiences with their custumers support in the past. So SLP bashing is something common here.

I don't see why their 402 could not achieve the numbers of another sponsor's 402. After all, it's just a 6.0L block stroked to 4.0" with Eagle forged components. Should be able to handle 500rwhp, and probably a lot more.

It all depend on the cam/heads/intake/headers/tb/tuning combo you'll put on it.

Justin99TA

Yeah I would be leary of anything SLP

Blue Hawk

A little off topic but I have the following SLP products installed on my car:

SLP oil pump
SLP double row timing chain
SLP 160 thermostat
SLP 85mm MAF.
SLP lid.
SLP long tube headers, high-flow cats, dual-dual (OEM).
SLP HD steel driveshaft.
SLP adjustable torque arm.
SLP sub-frame connectors.

so far, I had zero problem with all of these. The headers hang out quite low but I never scrapped them (I'm not lowered though).

I went with Lunati for my 382 because at that time (last fall) Eagle were still fixing their first stroker assemblies. They seems to have cleared all the problems by now.

Trans Am WS6 RGS