317 heads any good or go w/ aftermarket?
09-10-2007, 05:00 PM
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317 heads any good or go w/ aftermarket? should i invest the money and CNC some 317 heads i have or should i hold that money and invest in some aftermarket cast that provide a thicker deck? Dart, AFR, ETC?
408, GT47-88 that will see 15+lbs
408, GT47-88 that will see 15+lbs
09-11-2007, 11:35 AM
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Originally Posted by slowredz
JP, for what you want to do I would say go aftermarket if you have the money. I just picked up my DARTS last week from RAY MAC.
09-11-2007, 11:04 PM
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sorry to invade the thread but would untouched 317's be fine on a 347/76mm build? or should i have them worked? would the extra work be noticed? thanks and sorry for the intrusion
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09-12-2007, 09:07 AM
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You can run unported heads with stock valves if the budget is not there, but if you look around you can find some good deals on used heads, or even ported OEM castings from places like TSP, TEA, and Patriot.
09-12-2007, 09:22 AM
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I thought I read somewhere that the 317s had a thicker deck than the 243/241 and older castings. If that's the case, I wonder how much thicker the casting on an AFR or the like is than a 317?
