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i have an 87 with ported stock heads 1.9/1.6 with 1.6 rr and crower 15111 cam that has about the same lift duration as your cam that i run with 24# injectors @ 35 psi. runs great, but a little rich (slight gas smell) when idle drops below 1000 rpm. i am still working on tuning. it is not...

cam specs:218/224 @ .05; 114 ;.467/.485 w/1.6. extrude hone is better than nothing, i have a saleen and i need it to look stone original, i think you can get a lot more flow for less money if the stock look is not important. i guess my holley lower was an early casting because it was a good fit...

i dynod an 87 yesterday. here is the combo: powerheads, 1.6 scorpion rr, holley systemax 1 lower, extrude honed stock upper, 24# injectors, crower 15511, 1 5/8 shorties, 2 1/2 cat x pipe and dynomax exhaust, pullies, otherwise stock with smog, air and still speed density. 255 rwhp, 293 tq. runs...