This is topic What size headers to go with my combo set up? in forum Tech Talk at Northern California Ford Owners  .


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Posted by 87 coupe (Member # 10919) on :
 
I got a freshly built 306 with probe forged pistons,351 jr Windsor heads 180cc and 64cc with 1.6 rockers,e303 cam, and gt40 tubular with 24lb injectos 70mm tb and spacer basiclly that's all Wana get the most out this lil motor and Wanted to see if ill be ok with 1 5/8 or 1 3/4 shortys I still Wana be smog legal so what's recomended guys ur input would really be appreciated
 
Posted by turbo50 (Member # 6700) on :
 
1 5/8
 
Posted by sleeping stallion (Member # 8162) on :
 
U still using your 3 inch all the way back
 
Posted by Blow_U_In_Reverse (Member # 12298) on :
 
go with 1 5/8 bro..
 
Posted by Greasy (Member # 5258) on :
 
1-5/8"
 
Posted by 87 coupe (Member # 10919) on :
 
Yes with my 3" Mac catback with a pro chamber just want to do it all Mac
 
Posted by Blow_U_In_Reverse (Member # 12298) on :
 
quote:
Originally posted by 87 coupe:
Yes with my 3" Mac catback with a pro chamber just want to do it all Mac
how much power are you expecting to run?
 
Posted by Greasy (Member # 5258) on :
 
3" is overkill for your setup.
 
Posted by BAD ASS 5.HO (Member # 10947) on :
 
Yup 1 5/8 is good and get rid of that 3 inch cat back not good for ur setup.
 
Posted by coupe5oh (Member # 10411) on :
 
i have a set of mac ceramic coated equal length shorty headers for sale...hit me up 510.329.8918
 
Posted by 87 coupe (Member # 10919) on :
 
I was told by some old man that did my motor from day one according to specs 345 hp sounds about good I'm not trying to fly just wanted some faster than stock and wanted it to run as smooth ass possible with out problems.
 
Posted by LXjames (Member # 10791) on :
 
3" is to big for your set up. Until you get into deep breathing strokers and the like, you don't need 3" exhaust.
 
Posted by 87 coupe (Member # 10919) on :
 
1 5/8 all the way and just the catback 3"
 
Posted by 50DADDY (Member # 3076) on :
 
That 3 inch exhaust probably sounds good but its killing your low and mid torque,guaranteed.Your car would feel noticeably better with 2-1/2".

[ December 05, 2012, 11:07 PM: Message edited by: 50DADDY ]
 




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