Endangered Species
Well-Known Member
Okay, I need some opinions. I just got the block back from the machine shop. The combination is a 572 Hemi with late 90's Mopar heads that flow
Int - 411 @ .700 lift & 417 @ .800 lift
Exh - 222 @ .700 lift & 219 @ .800 lift
Yes the exhaust is pretty anemic. But I'm going to change heads right now....
I'm only going to be running 10.00's - 3600lb car spinning it 6800 - 4.56 gear, but will probably be going with a taller tire 30" now but will be going with 31".
I've called 3 different cam mfg. companies. In a lot of ways they all almost identical on the exhaust duration. They were a little different in Intake Duration and they were all different on lift.
CAM -1
Int. 800 lift - Exh. - 785 lift
int. 272 @.050 - Exh. 292 @.050
112 LSA
CAM -2
Int. 707 lift - Exh. - 733
int. [email protected] - Exh. - 292 @ .050
112 LSA
CAM - 3
Int. 768 lift - Exh. 750 lift
292 @ .050 - 296 @ .050
112 LSA
The cam I was running when it was a 498 and 512, was
800 int. - 785 exh.
[email protected] - [email protected]
This cam was picked out but one of our old engine builders. But at the time, the heads had not been flowed... that I know of.
The Cam Mfg. all were addressing the lack of exhaust flow with increasing the duration on the exhaust side.
My question is on the intake duration and the lift.
Any thoughts?
Int - 411 @ .700 lift & 417 @ .800 lift
Exh - 222 @ .700 lift & 219 @ .800 lift
Yes the exhaust is pretty anemic. But I'm going to change heads right now....
I'm only going to be running 10.00's - 3600lb car spinning it 6800 - 4.56 gear, but will probably be going with a taller tire 30" now but will be going with 31".
I've called 3 different cam mfg. companies. In a lot of ways they all almost identical on the exhaust duration. They were a little different in Intake Duration and they were all different on lift.
CAM -1
Int. 800 lift - Exh. - 785 lift
int. 272 @.050 - Exh. 292 @.050
112 LSA
CAM -2
Int. 707 lift - Exh. - 733
int. [email protected] - Exh. - 292 @ .050
112 LSA
CAM - 3
Int. 768 lift - Exh. 750 lift
292 @ .050 - 296 @ .050
112 LSA
The cam I was running when it was a 498 and 512, was
800 int. - 785 exh.
[email protected] - [email protected]
This cam was picked out but one of our old engine builders. But at the time, the heads had not been flowed... that I know of.
The Cam Mfg. all were addressing the lack of exhaust flow with increasing the duration on the exhaust side.
My question is on the intake duration and the lift.
Any thoughts?