Spline Count?
Cargo Master
Joined: Jun 2002
Posts: 2,033
Likes: 32
From: Aurora,Colorado
Hey Bill-what was the gross weight rating for the late 9 inch on the 1986 F150?? The 8.8 rating was 3800 pounds.
Thread Starter
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Senior User
Joined: Apr 2008
Posts: 472
Likes: 1
While I'm here, What would benefit my truck more.
Complete exhuast job, 3" pipes, headers, fix any leaks, cherry bombs
OR
Put some 4.10 gears in my truck, if I plan to replace my 33's with 37-40" tires should I go 4.56? So what can I see better performance wise
Complete exhuast job, 3" pipes, headers, fix any leaks, cherry bombs
OR
Put some 4.10 gears in my truck, if I plan to replace my 33's with 37-40" tires should I go 4.56? So what can I see better performance wise
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 790
From: Simi Valley, CA
1973/86: 3750 lbs. rear axle capacity, up from the 3300 lbs. that was the norm from 1957 thru 1972.
