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84LX89GT · 01-03-2003, 03:35 AM

I just recieved my B303 cam and i'm going to be putting it on my 302 with my 1.7:1 Cobra roller rockers and GT40 heads.

I was wondering, will i have to change pushrod length or put shims underneath the pedestal mount rocker arms. I read in a ford manual that you use shims after milling the heads (or get shorter pushrods) and i've heard people put different length pushrods with different cams, but i'm not sure what i need to do in my case.

I'll have a total of .510" lift and i'm using new Ford hydraulic roller lifters.

I appreciate any input, thanks,

Rick

01-03-2003, 03:35 AM	#1
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	pushrod length question/adjusting valve train preload I just recieved my B303 cam and i'm going to be putting it on my 302 with my 1.7:1 Cobra roller rockers and GT40 heads. I was wondering, will i have to change pushrod length or put shims underneath the pedestal mount rocker arms. I read in a ford manual that you use shims after milling the heads (or get shorter pushrods) and i've heard people put different length pushrods with different cams, but i'm not sure what i need to do in my case. I'll have a total of .510" lift and i'm using new Ford hydraulic roller lifters. I appreciate any input, thanks, Rick __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)