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#1
11-02-2019, 03:16 AM
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389 build help
Building a 389 going to put a tripower on it. I have bbc rockers for it and plan to port and polish the heads and enlarge the valves. Question is i have 066 camshaft and a 524886 camshaft. Would you run either of these? If which one and what size and length of valve should i use?
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#2
11-02-2019, 03:18 AM
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Oh and they are 091 heads...how much would you have milled off them. Motor and heads are 1966
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#3
11-02-2019, 04:26 AM
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BBC rockers are too long for Pontiacs. You need Pontiac rockers. If longer than stock valves are used, SB Ford rockers might work; they are slightly shorter than Pontiac rockers.
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#4
11-02-2019, 04:28 AM
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Even if i elongate the push rod holes
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#5
11-02-2019, 05:22 AM
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Yes. The rocker tip/pad will not be centered on the valve tip. If rocker manufacturers could a rocker that fits a few brands of engines, they would...
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