quick question
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New User
Joined: Jan 2009
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From: Vancouver, B.C
quick question
ok I have a 91 F250 with the 5.0 EFI I replaced the exhaust last year with a single 3" mandrel bent pipe and had a 3" hi-flow cat and 3" flowmaster 40 series now my exhaust manifolds and stock y-pipe are rusted out and I was thinking of going to a set of BBK shorty headers and a Hi-flow Y-pipe but I know the 5.0's like some back preassure so will this affect my bottom end power? anyways thanks in advance.
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From: Vancouver, B.C
Postmaster
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Long tube headers will give you more low end than shortys . You don't want any back pressure , 1 1/2 primary long tubes will give the scavaging you need then go larger from there , so your 3in pipe with the 40s should be good ... Lew
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Joined: Sep 2001
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ok I have a 91 F250 with the 5.0 EFI I replaced the exhaust last year with a single 3" mandrel bent pipe and had a 3" hi-flow cat and 3" flowmaster 40 series now my exhaust manifolds and stock y-pipe are rusted out and I was thinking of going to a set of BBK shorty headers and a Hi-flow Y-pipe but I know the 5.0's like some back preassure so will this affect my bottom end power? anyways thanks in advance.
You can get a Bassani or Magnaflow Y pipe from Summit or Jegs.
The BBK shorties don't fit very well though. I tried to put them on my truck and they did not line up well at all. Actually, they were way off. I also tried Hedmans, but they were defective with pin holes in the welds. So, I still have manifolds. I gave up on headers.
I would go with another brand.
Posting Guru
Joined: Dec 2008
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From: Rusty, Maine
If your set on using shorties, get the Ford Racing SS ones. I bought them for my 5.8 doner engine and they fit perfectly. I haven't tried them for leaks because I haven't put the engine in yet.
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