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G flat head from jerry's

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richard

10-12-2001 17:52:37




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need some information on these aftermarket heads. valve sizes,port size. do they help get more air into motor or are you just gaining compression an a spark plug in center of cyl. are they a bolt on deal or do they needto be finished, valves,guides etc...do stock rocker stands work or do you get special ones later richard




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lynn

10-13-2001 11:04:36




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 Re: g flat head from jerry's in reply to richard, 10-12-2001 17:52:37  
richard gman said it right with the piece of art used one on a stroker g about 3 years ago we used the early rocker assembly without the cups you probably would use the later ones without using the exhaust cups at 6.250 like the one we did you have to grind out the cylinders to clear the valves at 6.375 i would say they will clear at 9.5 to 1 compression no problems on head gaskets all the casting is thicker than the stock ones lynn

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Gman

10-12-2001 19:43:26




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 Re: g flat head from jerry's in reply to richard, 10-12-2001 17:52:37  
Richard Jerry's heads are a piece of Art,the valves are two and 7/8 I beleive,you need to use one of his exh.manifolds with the head,the head ports are huge. The block donut might have to be inlarged in the valve area to accommodate the valve opening. I enjoyed doing business with them later Gman



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