anyone know what long tube headers will fit 83 thunderbird with 351w must be 1 5/8 primary at least with 3 in collector
BBK or Hooker, get them for a fox body mustang. You'll have to run a floor shifter if you're using a auto. You'll be fine if you're using a manual.
Why 1 5/8 when you can have a 1 3/4 or even 1 7/8 if you ever go boosted or big heads and cam a 408 loves to breathe. I have a 351 with bbk's 1 5/8 shoties?
He said at least 1 5/8th primary.
I'm pretty sure they don't make a 351 swap LT header any smaller than 1 5/8"
If I ever did a 351 swap, I'd us Hooker 1 3/4".
reason for 1 5/8 is the small trick flow heads 170 I'm using its a coast high 408 pro street with 10.5/1 compression so I don't think I would need any bigger for this year. hopefully 100 or 150 shot of nitrous will make up for it at the track
small heads on my coast high 408 170 trick flow
I was looking at a rpm air gap intake and to match the in flow I was told I need 1 7/8 primaries ? and I would love a set of stainless steel once and done.
.....if you stick with the 1 5/8"....you're leaving 15-25HP on the table with that CID. :beatyoass:
even with a small 170 cc trick flow head
I didn't know they made ANY a/m headers less than 1 5/8"... heck even the 3.8 headers are all 1 5/8"
Headmen makes 1.5" headers four our cars.
wow. I was unaware.
I had the 1-1/2" Headmans when I converted my car over to a T-5 in '93. With the stock CFI on the 5.0 and 2-1/4" dual exhaust is was a pretty good setup for the stock motor. Getting the bolts in and out of the header was a breeze and the plug wires had plenty of room too.
Darren