GM847 cam
Thread Starter
Registered User
Joined: Jan 2001
Posts: 440
From: Wilkes-Barre, PA
GM847 cam
Anyone know where I could buy this?? I know gmpartsdirect.com has it but I only entered in the part number and got a description of "camshaft" and their price... I think the specs I found were 234/242 112LSA Thanks guys!!
Thread Starter
Registered User
Joined: Jan 2001
Posts: 440
From: Wilkes-Barre, PA
Originally posted by reuter
figure out your lift by dividing the 1.6 lift by 1.6, then multiplying that number by 1.5
the factory lift numbers on the gm cam is for a 1.5 rocker
figure out your lift by dividing the 1.6 lift by 1.6, then multiplying that number by 1.5
the factory lift numbers on the gm cam is for a 1.5 rocker
This hydraulic roller design contains eccentric for mechanical fuel pump. It is for off-road use only. The duration at .050" tappet lift (intake/exhaust) is 234/242; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 539/558. Valve lash is zero/zero and lobe centerline is 112 degrees
I cant wait!! thanks again
Registered User
Joined: Jan 2003
Posts: 719
From: Lafayette IN.
Originally posted by twdz28
anyone have a sound clip of this cam??? how is the vacuum???
anyone have a sound clip of this cam??? how is the vacuum???
Here you go.. Vac. is fine
Registered User
Joined: Aug 2001
Posts: 870
From: Cuyahoga Falls, OHIO
Actually vacumm is not the best. I have 11" of vacuum with ported heads and 1.5 roller rockers. Needless to say my brakes suck. Even on wet roads I have trouble getting the ABS to kick on.
I bought a vacuum canister from Summit Racing but never put it on. I'd rather go with an electric vacuum pump.
I bought a vacuum canister from Summit Racing but never put it on. I'd rather go with an electric vacuum pump.
Registered User
Joined: Feb 2003
Posts: 21
From: CIncinnati, OH