GM "846" cam
Melting Slicks
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
luvmy92: That is a TON of lift considering the low duration numbers!
The GM 845, 846, and 847 are all Crane ground camshafts with GM part numbers. You can also buy the Crane part, but it will cost you a bit more...besides I tell folks it is a factory camshaft...(I have the 847)...
Come on Jim...you know you want more power!
The GM 845, 846, and 847 are all Crane ground camshafts with GM part numbers. You can also buy the Crane part, but it will cost you a bit more...besides I tell folks it is a factory camshaft...(I have the 847)...
Come on Jim...you know you want more power!
Thread Starter
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Originally Posted by Curveit
GM occationally uses after-market cams, and other parts;Crane roller-rockers, and some hi-performance heads for example. I believe that for a given lift, and duration at .050, a cam with smaller over-all duration numbers will give better idle, and low-end performance. They're faster acting on the lifters.
I'm just trying to get an idea of how much my idle quality will degrade with the 846 cam versus my HOT Cam. The 846 cam has slightly more duration (4* Int/ 2* Exh) on the same LSA (112) as the HOTCam. Not sure if that results in a noticeable impact to idle quality or if it's so minor I won't be able to tell
Thread Starter
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Originally Posted by No Go
luvmy92: That is a TON of lift considering the low duration numbers!
The GM 845, 846, and 847 are all Crane ground camshafts with GM part numbers. You can also buy the Crane part, but it will cost you a bit more...besides I tell folks it is a factory camshaft...(I have the 847)...
Come on Jim...you know you want more power!
The GM 845, 846, and 847 are all Crane ground camshafts with GM part numbers. You can also buy the Crane part, but it will cost you a bit more...besides I tell folks it is a factory camshaft...(I have the 847)...
Come on Jim...you know you want more power!
What would ever make you think that?!
Melting Slicks
Joined: Apr 2000
Posts: 3,490
Likes: 2
From: Oviedo FL
Originally Posted by No Go
luvmy92: That is a TON of lift considering the low duration numbers!
Mike
