LS2 402 Stroker

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Sep 30, 2008 | 01:19 AM

galluccib

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LS2 402 Stroker

I'm looking to stroke an LS2 (402) and need some help with the heads and CAM setup. The motor is going in a sandrail and I'm trying to get 580 horsepower and 550 torque..

Here is what I was looking at...

243 Heads (CNC) - Fast Intake / 90MM - - Not sure on the CAM
L92 Heads (CNC) - L92 Intake / 90MM - Not sure on the CAM

Or is there a better way to go on this stroker ?

Thanks in advanced...

-Brian

Sep 30, 2008 | 03:19 AM

Jrp1978

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your gonna need

You are gonna need something more than a 402 to run that # You can get close but man .. Thats alot for a 402 !

Sep 30, 2008 | 04:37 AM

LSWONGTO

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From: Ramstein AB, Germany

Do you want those #s at the wheels or Flywheel?

Sep 30, 2008 | 04:56 AM

Tom@SpeedInc

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580hp is that rated at engine? i'm sure it cane be done if thats your goal

Sep 30, 2008 | 05:45 AM

JL ws-6

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If that's flywheel hp then yes that's easy. My 402 with ET 240 heads and a hydraulic cam setup made 470 hp thru a 5000 rpm converter and a Th400. I guarintee it's close to 600 at the flywheel.

Sep 30, 2008 | 11:16 AM

galluccib

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580 horsepower and 550 torque = Flywheel..

Which one would be better to run ?

243 Heads (CNC) - Fast Intake / 90MM - - Not sure on the CAM
L92 Heads (CNC) - L92 Intake / 90MM - Not sure on the CAM

And what CAM ?

Sorry guys for the stupid questions but I'm in IT and don't know a great deal about this kind of stuff and I'm trying to figure this build out myself.

Thanks,

-Brian

Sep 30, 2008 | 11:19 AM

ndfrsd6

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From: Homer Glen IL

i put down 500 rwhp and 469 rwtq so yes it can be done and im running 241 heads so there's more on tap....

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Sep 30, 2008 | 11:49 AM

ndfrsd6

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From: Homer Glen IL

well i wouldnt say they suck .... its a money thing sometimes , yes 243's are better but im still putting down 500 rwhp and that was on a 50 mile motor ....so i know its in the low 500's now that its broken in . im very happy with my build now not to say im not going to upgrade next year to bigger heads ,but if money is no object than get a nice set of trick flow heads

Sep 30, 2008 | 11:58 AM

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galluccib

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money is no object.... I just want it done right :-)

What tricked heads would you go with ?

Sep 30, 2008 | 12:04 PM

#11

ndfrsd6

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From: Homer Glen IL

235cc LS1 70cc Chambers, CNC ported trickflow heads....something like that is what im going with next year....

Sep 30, 2008 | 12:42 PM

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99blancoSS

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From: ST Helens, OR

If your looking a good head then a AFR 225 or TFS would be my choice. I can set you up with a great deal on the AFR's as I'm having a special on them but U can do the trick flows as well. I also have an All Pro fully race prepped head here as well ready to go that would be better than the other two but is also more money.

Sep 30, 2008 | 02:16 PM

#13

Qwiknotch

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From: Granada Hills, Ca

Well, Chevy High built a 402 last year, 11:1 compression, factory aluminum block, Dart 225's (out of the box), victor jr manifold (out of the box), hydraulic roller cam and a 750 carb and made 586hp and 560tq.

Sep 30, 2008 | 02:34 PM

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firechicken_98

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From: Atlanta

Call Vengeance (sponsor) =====>

They can set you up with what you need. They build some really good engine set-ups.

Oct 2, 2008 | 02:16 AM

#15

Jrp1978

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Fly wheel

flywheel power would be easy to obtain ..... I thought you wanted rear wheel!
If money is no object go with the 7.0 liter?

Oct 5, 2008 | 01:46 PM

#16

Mr. Luos

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From: Thornton, CO

11:1 402, Patriot LS6 stage III's, 248/254 on a 113, ported FAST 90mm.

531 to the wheels (dynojet) through an M6 with a Moser 9" and 4.11's.
Torque is down around 480.