Headers Or Not
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New User
Joined: Jul 2003
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Headers Or Not
I'm trying to get a little more power out of my 351 clev.I was going to install headersBUT I was told with a bigger exhust system I would gain that low end pulling power I am looking for.If I install headers also is that going to help me that much more. I forgot to say that this is a 77 f250 with a newly rebuilt engin I pull a 22 ft 5th wheel. 
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
Headers Or Not
A bigger exhaust will usually improve high rpm pulling power. Headers will always help an engine. IMO a Cleveland is NOT what you want for towing. A 460 or even a 400 would be better, they both have low end pulling power which the Cleveland ain't got.
You have another thread here that you posted to a month ago that probably has some info also:
https://www.ford-trucks.com/forums/s...hreadid=128322
You have another thread here that you posted to a month ago that probably has some info also:
https://www.ford-trucks.com/forums/s...hreadid=128322
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 5
From: Albuquerque
Depends on the headers you go with. Usually, headers will increase both torque and hp. If you also go with a 2.25" or 2.50" dual free flow exhaust like flowmaster...then you will like the improvement.
Good luck with it...
Good luck with it...
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Equal length headers will help build some low end torque by scavanging exhaust from the other cylinders and will also make more higher rpm horsepower because they breath better than manifolds.
