Big chief or pontiac heads
I have a customer that has a 706 bbc 4.84 with 2 stage nitrous, the heads currently in the engine are Pontiac 10045427 that have a intake port 1.920 *2.680 dimension wise. those heads are basically done not very good condition.
he buyed a pair of old but great shape bid chief but the ports looks smaller at 1.875*2.680 these are very early heads.
What of the two pairs should i install? tell me your opinions
Thanks in advance!