Posted By: 72 RR DUDE
Anyone ever stubble on to the answer for something dumb ! - 05/29/16 08:05 PM
Have a 440 six pack with 484 purple shaft cam and 915 heads 30 over with 411 rear gears with a tricked up auto that is in my 72 RR.witch can't even spin the tires!!! I have a locking gas cap that is hard to take off so on Saturday i took it off before going to the gas station went on the highway put the hammer down and it wanted to rip the tires off! Long story short I thought about this and discovered that I had a unvented gas cap on and vent line that run's with the 3/8 fuel line to the front I had hooked up to the little vent tube on the six pack filter thus having no venting at all. At least after 5 years after the restoration I stumbled onto the problem before I started ripping the motor apart.
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