what do you think?
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Junior User
Joined: Oct 2006
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From: b.c north
what do you think?
Im thinking of doin daul 3inch exhaust,if they will fit ,if not 2.5,or should i run single 4.what is your opinion?Also should do the air intake first?Or does it matter in what order they are done?
The truck is 1991 f250 xlt lariat ext cab long box zf transmission 4x4 with 4.10s.
Thanks
Pabs
The truck is 1991 f250 xlt lariat ext cab long box zf transmission 4x4 with 4.10s.
Thanks
Pabs
Posting Guru
Joined: Oct 2003
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From: Monroe, WA
Single 3 or 4 inch would be a good place to start. Dual 2 1/2 or 3 if you just want the cool factor. Not much room for the separate pipe on Fords. I'd do the exhaust first, then the intake to see how much it helps.
Posting Guru
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From: Kent WA
With a single 2.5" the area of the opening is 4.91 square inches
With a single 3" the area of the opening is 7.07 square inches
With dual 2.5" the combined area of the openings is 9.82 square inches
With a single 4" the area of the opening is 12.57 square inches
With dual 3" the combined area of the openings is 14.14 square inches
Draw your own conclusions....
With a single 3" the area of the opening is 7.07 square inches
With dual 2.5" the combined area of the openings is 9.82 square inches
With a single 4" the area of the opening is 12.57 square inches
With dual 3" the combined area of the openings is 14.14 square inches
Draw your own conclusions....
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Junior User
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From: b.c north
HMMMM,
But there still would be a restriction at the y pipe ,what could i do about that?if i went with 3 or 4 inch single?i think the opening is 2.5 is that right?That is why i mentioned 2.5 dauls free flowing from the y pipe back and straight through mufflers?But im not sure i need convincing.Or is there a bolt on system that i could buy?Or is there headers avalible?
But there still would be a restriction at the y pipe ,what could i do about that?if i went with 3 or 4 inch single?i think the opening is 2.5 is that right?That is why i mentioned 2.5 dauls free flowing from the y pipe back and straight through mufflers?But im not sure i need convincing.Or is there a bolt on system that i could buy?Or is there headers avalible?
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