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pwm72
05-10-2007, 08:34 PM
Anyone know what size helicoil I need for the bolts that attach the fuel bowls to the carb main body?:Do No:

BTW - Holley 4150 carb
Chrille_GS
05-11-2007, 11:25 AM
Youll have to drill it up first to get the helicoil to fit and then use whatever size (M4 metric? probbably in inch thou) on the helicoil to get the old bolts to fit again
DaWildcat
05-11-2007, 11:40 AM
Not sure of the thread size, but here are the inserts for sale:

http://www.holley.com/26-3.asp

Devon
DaWildcat
05-11-2007, 11:45 AM
Just confirmed the Holley float bowl screws are 1/4 in. x 20.

Devon