Bolt size and thread
Logistics Pro
Joined: Oct 2014
Posts: 3,677
Likes: 172
I replaced the left manifold on my 88 301 and bought the bolts from NAPA in a kit from the help section, all the stores carry the kits. You need to use a tap or thread chaser with oil in the old threads and make sure the bolt is not broken off down inside the head.
I used a loaner thread chaser kit from Orileys. With that you can tell what size thread and get a single bolt.
This may not be correct but from my 88 manual, for a 7..5 engine they are 3/8-16. and the torque for a 5.0 is 18 to24 ftlb..
maybe I just haven't learned to use my CD manual but i could not find the 5.0 bolt size anywhere...
When I bought the manifold bolt kit the bolts seemed like they were a bit tight but they are working fine a year and 6k miles later. I think mine were 3/8-16 also.. Your van is a bit newer though so it could be metric
I used a loaner thread chaser kit from Orileys. With that you can tell what size thread and get a single bolt.
This may not be correct but from my 88 manual, for a 7..5 engine they are 3/8-16. and the torque for a 5.0 is 18 to24 ftlb..
maybe I just haven't learned to use my CD manual but i could not find the 5.0 bolt size anywhere...
When I bought the manifold bolt kit the bolts seemed like they were a bit tight but they are working fine a year and 6k miles later. I think mine were 3/8-16 also.. Your van is a bit newer though so it could be metric
Thread Starter
|
Tuned
Joined: Aug 2013
Posts: 414
Likes: 1
On the 'net I've also found 3/8-16 as well. Thanks for your reply. As for it being broken, that's a real possibility. Probably at some point the PO broke one off and left it that way. I've certainly seen it before.
Thread
Thread Starter
Forum
Replies
Last Post
302grabber
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
6
Jan 3, 2010 07:55 AM
AFSOCmech
1987 - 1996 F150 & Larger F-Series Trucks
2
Jul 31, 2006 08:47 PM
