best heads?
Thread Starter
|
Senior User
Joined: Sep 2003
Posts: 491
Likes: 0
From: kirksville mo
best heads?
I'm sure this has been asked and answered here a lot before so please bear with me. Will cleveland heads work on a 80 351m the heads i'm looking at are off an 70 model if they will will there be much of an improvement in torque or horse power or should i just redo the 351m heads i'm rebuilding the 351m right now will be 30 over rv cam ,aluminum intake, ect.
Thanks Dave
Thanks Dave
Posting Guru
Joined: Aug 2000
Posts: 2,416
Likes: 4
From: PacNW
If they're 2V heads then you're looking at potentially a little improvement based on the exhaust port configuration of the earlier Cleveland heads.
Now it they're 4V then it's a whole different ballgame.
Both 2V and 4V are direct bolt ons. No modification to the block is necessary.
Now it they're 4V then it's a whole different ballgame.
Both 2V and 4V are direct bolt ons. No modification to the block is necessary.
Junior User
Joined: Dec 2003
Posts: 58
Likes: 0
I think the early heads are thinner. I have had water seepage from the head gasket under 1971 351C and 400 heads on my 351C. Also two have cracked. Block has been decked and heads have been surfaced. I now have a 1978 351M head on one side and no water seepage on that side. That head does have the large lump around the exhaust guide but I don't know how much it effects the flow.
Thread
Thread Starter
Forum
Replies
Last Post
Nolan8976
1973 - 1979 F-100 & Larger F-Series Trucks
14
Aug 7, 2016 11:27 AM
