Upgrading to a 2v carb

HEY FMC

YOUR VALVE SIZE SHOULD BE:

INTAKE................1.645-1.655..OR1.65
EXHAUST.............1.385-1.396..OR1.39

YOU CAN GET A 1.70 INT. AND A 1.45 EXH. AND THEY WILL FIT WHEN YOU ADD THE HARDENED VALVE SEATS. SOME HAVE PUT IN THE LARGER 1.76/1.5 ALSO. MY MACH.SHOP SAYS THEIR BOOKS SAY 1.70/1.45 IS WHAT IS CALLED FOR. I HAD A I70 HEAD THAT THEY WERE WORKING WITH. YOUR 250 HEAD IS DIFFERANT, SO MAYBE YOUR COULD GET THE LARGER VALVE IN.

I HOPE THIS ANSWERS YOUR NEEDS.

LIVE IN GRACE

LEROY POLL
 
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