GM847 Vavle Timing

Reply Subscribe

Thread Tools

Search this Thread

Jun 25, 2006 | 09:38 AM

PUR_SSYN

Thread Starter

Registered User

Joined: Dec 2005

Posts: 21

GM847 Vavle Timing

I've done a few searches on here and Google, but I can't seem to find
the valve timing specs for this camshaft.

Link to a cam card, or posting IVO, EVO, IVC and EVC would be great help.

Thank you

Jun 25, 2006 | 11:24 AM

engineermike

Registered User

Joined: Mar 2002

Posts: 2,743

From: Baton Rouge, LA, USA

Re: GM847 Vavle Timing

234/242-112. Card says it has 4 deg advance ground in, but when I checked my old one, it was closer to 6.

At +6:

EVO = 59 BBDC
EVC = 3 ATDC
IVO = 11 BTDC
IVC = 43 ABDC

Lift is .539/.558 with 1.5's if I remember correctly.