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#181
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I don't know, but since I tossed the 454 chevy & got the Pontiac 455 in. I've had no problems. I get a bunch of puzzled looks though (No its not my speedo's ). Since the Pontiac is lighter I gained a few mph & once I can get the ride plate & shoe combo right. I should gain another 3-5mph.
Ron
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#182
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Quote:
"Whats the difference between 64-67' vrs. 68'-72'? Is it just the crossmember Or A-arm mount possitions? I looked at a 65' while I was test fiting on the 68' on Sat. I also saw a diagram of both frames & it looks like the A-arms maybe in the same locations, but the crossmember looks like it goes farther back on the 68'& up. I think you have it backwards. To use a 68-up round port A Body header on a 64-67 GTO chassis you have to remove metal from the back of the crossmember. A 64 GTO set with the tubes being farther back due to the crossmember will most likely fit a 68 chassis (at least as far as crossmember clearance goes. I have been told buy 4 guys that if it fits 68'-72' then it will fit 64'-67'. But if it fits 64'-67' then it may not fit 68'-72'. So I know it fits a 68' great. So unless someone steps up with a 64'-67' A-body near by then I can only assume those 4 guys are right. I'm sure that they would know alot more about A-body's than I do. Scott Tiemann (Who owns the "Legend" 1966 White GTO) knows all about what it takes to modify the frame to fit the 68-up round port headers on his stock frame cross-member chassis (back half car). I would get ahold of him. If you buy a set then I'll send you two sets 1 coated & 1 not. You can try the uncoated set first so you wont chip or scratch them. Then if there's no problems, just send the un-coated set back & I'll pay the shipping for 1 set both ways. What would the price be for a set of the 1-3/4" round port tri Y headers for a 64 GTO? Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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