This is topic Is 331 smog legal? in forum Tech Talk at Northern California Ford Owners  .


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Posted by The TASM (Member # 292) on :
 
I'm about to hit the 170,000mi mark on my 94 5.0, been thinking about rebuilding, maybe a 331ci stroker. I heard that Coast Performance builds a 347-E block that is CARB certified legal, but the extra $1000 over a 331 does not interest me. So would a 331 stroker fail when I take it for smog next year or will I be okay? What are some smog friendly 331 combos?
 
Posted by CMELEVU (Member # 2563) on :
 
quote:
Originally posted by The TASM:
I'm about to hit the 170,000mi mark on my 94 5.0, been thinking about rebuilding, maybe a 331ci stroker. I heard that Coast Performance builds a 347-E block that is CARB certified legal, but the extra $1000 over a 331 does not interest me. So would a 331 stroker fail when I take it for smog next year or will I be okay? What are some smog friendly 331 combos?
For smog friendly, your gonna want to pay attention to your head and cam combo. The displacement of the motor shouldnt matter. Not sure of the compression ratio to keep it at. 10 to 1 or 10.5 to 1 would be pump gas friendly. Dont forget the supporting mods too, (i.e. injectors, mass air throttle body.) Do lots of research and find carb numbers for external stuff.
 
Posted by The TASM (Member # 292) on :
 
Thanks, I will look for the parts that have CARB numbers.

[ January 29, 2007, 04:53 PM: Message edited by: The TASM ]
 
Posted by 66backinblack (Member # 5372) on :
 
i remember the 347 i had built for me had a smog and no smog option, it was from ford racing. maybe somethin to do with the pistons?
 




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