GMHESS7

Anybody here with the MS4 Cam and a set of 215cc heads? What kind of power yall gettin?

HCI2000SS

iTrader: (2)

What kind of 215 heads?

GMHESS7

PRC, the ones Texas Speed sells http://www.texas-speed.com/p-7-prc-2...der-heads.aspx

GMHESS7

PRCs, thes one Texas Speed sells
http://www.texas-speed.com/p-7-prc-2...der-heads.aspx

HCI2000SS

iTrader: (2)

Gotcha! Along with a Fast intake that should be a stout combo! I run a cam similar to the MS4 but with PRC stage 2.5/5.3 heads

Rise of the Phoenix

iTrader: (27)

Here you go OP:

https://ls1tech.com/forums/dynamomet...s6-intake.html

https://ls1tech.com/forums/dynamomet...ast-102-a.html

dr_whigham

iTrader: (49)

I'd go straight to the 227's. They'll even tell you that midrange is almost identical, but you'll pick up more headroom in the top-end...

Unless you already have the 215's, go to the 227's and don't look back

JakeFusion

iTrader: (7)

Those dyno graphs are a bit underwhelming. I would have thought with a FAST on an M6 with a stock 10-bolt and the MS4, that 480rwhp would be attainable. I think there are some dynos with the MS3 in the 480s using the 215s.

But the 227 is a better head for top end power (which would work better with a top end cam like the MS4).

Rise of the Phoenix

iTrader: (27)

Agree with you on that one. Pretty potent combo there.

VandykeT/A

My car had a few issues when it was on the dyno. It made 445.8 on a dyno dynamics dyno after a few changes which my tuner said lacked .1 of a hp breaking the heads/cam record for a LS1 on his dyno. He says 10 pecent correction compared to dyno jet which puts it at 490 on the nose. The car trapped right at 126 at 2000 feet and went 10.92. The 445.8 was through a 9" with 4:30s and 17 x 11 torque thrusts. My 452 on the jet was with a single 3" system and the 10 bolt the new dyno results were through a 4" and the Ford 9". And for what its worth I would go ahead and go up to the 227s. It couldn't hurt.

john563

iTrader: (17)

yeah my friend has dyno dynamics and it def is a heart breaker..it robs a ton of hp comparet to dyno jet