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Re: Is it true that .....
It was eat’n me up about this 10 20 stuff so I removed the timing sprocket and look what I found….. 
s/t
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. 
Last edited by Sport/Truck; 10-04-2007 at 08:09 PM.
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