@ work need help from the guru's...
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From: Romeoville ,Il.
Car: 1990 RS/SS modified
Engine: 355ci, 113 heads, LT4 hotcam
Transmission: T5
Axle/Gears: 3.73 Eaton posi
@ work need help from the guru's...
Hey guys I'm at work and I'm trying to order a new set of header gaskets. I have a set of 1 3/4 mac headers. I'm not sure what port size to order for my gaskets. I'm bolting them up to a set of '113 heads.
Thanks
Thanks
Last edited by Rocket-Doc; Jul 20, 2012 at 12:58 PM.
Joined: Aug 2006
Posts: 12,805
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: @ work need help from the guru's...
Mac does not make a 1.75 header for a 3rd gen to my knowledge. You need to know if you have round or rectualgular ports
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