Dyno graph needed
Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 950
Likes: 3
From: Chesapeake Virginia
Dyno graph needed
Does anyone have a dyno of a Normally Aspirated 9.6:1 compression 402 Stroker. It has factory 243 heads and the cam in this motor is a 227/239 .613/.623 115LSA. Need dyno sheets for comparison purposes. Please post what ever your CR is. Hopefully your cam profile will be close.
Last edited by Res1cue; Jun 15, 2011 at 06:54 AM.
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Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 950
Likes: 3
From: Chesapeake Virginia
Here is mine. Very concerned that the NA dyno was abnormally low but after looking at yours I am feeling a little better. Hopefully yours is not abnormally low as well. Also feared that the cam was slightly off. I have stock heads with 5 angle seat work.
Last edited by Res1cue; Jun 15, 2011 at 01:03 PM.
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
~460rwhp with a heads/cam 402 seems really low to me 
Those numbers seem like they would be on the lower side with just a heads/cam LS2 that wasn't stroked out.
Those numbers seem like they would be on the lower side with just a heads/cam LS2 that wasn't stroked out.
Last edited by FloydSummerOf68; Jun 15, 2011 at 07:58 AM.
Melting Slicks
Joined: Mar 2007
Posts: 2,391
Likes: 23
From: Santa Barbara CA
I don't think your n/a results are off. Sure, it's a 402, but you are missing over a point of compression and have stock heads (and intake, right?).
I made about 20 rwhp more than you and the same torque with my cammed LS3. Cam was pretty close to yours (224/236) and I had 1.75" LG headers and a FAST 102 manifold at the time. But I had better heads and manifold and more compression, too. The only thing you really have going for that combo is extra cubes.
I've been watching your saga for the last year or more. Not sure what's going on now. All I can tell you is that my same motor combo from above (minus the FAST manifold) makes right around 10 psi with a T-trim and 3.6" pulley and stock crank pulley. Motor did 683 rwhp with 11.0 A/F and 14-15 degrees of timing, I think. That was with 100% M1 and 91 octane crap CA gas.
Hope you figure it out....
I made about 20 rwhp more than you and the same torque with my cammed LS3. Cam was pretty close to yours (224/236) and I had 1.75" LG headers and a FAST 102 manifold at the time. But I had better heads and manifold and more compression, too. The only thing you really have going for that combo is extra cubes.
I've been watching your saga for the last year or more. Not sure what's going on now. All I can tell you is that my same motor combo from above (minus the FAST manifold) makes right around 10 psi with a T-trim and 3.6" pulley and stock crank pulley. Motor did 683 rwhp with 11.0 A/F and 14-15 degrees of timing, I think. That was with 100% M1 and 91 octane crap CA gas.
Hope you figure it out....
