AFR cylinder heads

[Old Guy with 87 GT]

rpm427......one of my best friends was running afr 185s ,e-cam ,1.7 rr .......no clearance problems ,he was running them on a stock short block 92 moter (forged pistons with factory valve reliefs)

i've heard peaple say that the 185s are a little big for a 302 but if your going to upgrade later ,then get the 185s ....even with the lower velocity they still work just as good if not better then the 165s.........

my friends car was turning mid 7s in the eighth and dynoed at 320 hp at the wheels with that combo (naturaly asperated )........he was running stock short block,e cam ,afr 185s, 1.7rr ,systemax intake, 70mm tb, 24lb injectors, full lenth headers, 355s and t-5 man trans..........

i'm don't have the specs for an e cam handy ,but i know with that combo(e cam and 1.7s) his valves were pretty close so before finale essembly it might be wise to clay the engine ,but you should be allright with 1.6 rockers ..........

only problem my friend had --->for quite a while he was making that power(320 rwhp) with the stock block and stock computer ,but he eventually got a custom chip and was turning his moter up to 7,000 ,.....he soon discovered that if you turn a stock moter to 7,000 rpms with that much power ,the stock block doesn't like it ........he cracked his block .......the stock moter is'nt balanced to handle the high rpms ......he recently built another 306 short block balanced to 7500 with the same combo adding a custom cam ,fly cut pistons ,and 10 to 1 compression ....he hasn't had it at the track yet but initial dyno numbers are like 340rwhp and a much better torgue curve .....he's still tuning but i can update you on progress as he gets it tuned ,just pm me if you want more info