NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post

Batman · 02-06-2007, 06:19 AM

I've put a few LT4 hotcam's in GEN 1 cars, only thing you have to do is tap the dowel on the front of the cam (where the opti goes) in so it doesn't hit the timing cover. In fact the LT4 cam is optional for Chevy's ZZ4 smallblock. If you have a post 86 1 piece rear main roller block you should be fine. The LT4 cam also has the mechanical fuel pump lobe but I don't think the stockers do.
-Nick

FWIW

Technical Notes: The LT4 camshaft P/N 24502586 was designed to be used in a number of different engines. Therefore, the following change may need to be made to allow for correct assembly of the engine: For LT1 and L98 engines 1995 and before, the dowel pin in the end of the camshaft must be pushed in so extension from end of cam is .30+/-.01", the same as the production part. For 1996 LT1 and LT4 engines, the dowel pin is in the correct position, extending .620" from the end of the camshaft. This camshaft has a fuel pump lobe.

i know it is a different cam but the tech advice should be the same.

02-06-2007, 06:19 AM	#17
Batman 11 Second Club Join Date: Jan 2005 Location: Fishkill, NY Posts: 1,278 iTrader: (1)	I've put a few LT4 hotcam's in GEN 1 cars, only thing you have to do is tap the dowel on the front of the cam (where the opti goes) in so it doesn't hit the timing cover. In fact the LT4 cam is optional for Chevy's ZZ4 smallblock. If you have a post 86 1 piece rear main roller block you should be fine. The LT4 cam also has the mechanical fuel pump lobe but I don't think the stockers do. -Nick FWIW Technical Notes: The LT4 camshaft P/N 24502586 was designed to be used in a number of different engines. Therefore, the following change may need to be made to allow for correct assembly of the engine: For LT1 and L98 engines 1995 and before, the dowel pin in the end of the camshaft must be pushed in so extension from end of cam is .30+/-.01", the same as the production part. For 1996 LT1 and LT4 engines, the dowel pin is in the correct position, extending .620" from the end of the camshaft. This camshaft has a fuel pump lobe. i know it is a different cam but the tech advice should be the same. __________________ -Nick 9/11/01- Never Forget 2002 Pontiac Trans-Am WS6 # 206 Chasing 10's 469RWH/437RWTQ 11.05 @ 123 Last edited by Batman; 02-06-2007 at 06:26 AM.