I ran skip white Nkb's on a 350 and they performed well but a 200cc head really is some to big for a 350 .Hi everyone...Happy Holidays!
So here's the deal...I bought and installed a Comp XE/274 hyd. cam/lifter kit in my 350 on a 67 Chevelle.
Since I still have it tore down I decided to swap the iron heads with a good set of Aluminums. I'm running a dual plane intake with Holley 650 mech. secondary and MSD pro billet dist. with separate coil. Lower end is unknown since I just bought the car. Not sure if I need angle or straight plugs and really need good advice on what particular header to go with and what will fit...part # please if possible for those running this combo in their 67's.
I was looking at Skip White's NKB 272's along with AFR and Edelbrock RPM's but feel I will be bound to a particular version due to the cam I'm using (hyd. flat tappet) and what header will work.
They are a very good deal but unfortunately they dont offer a head with smaller runners.
I'm currently reworking that motor and will be putting afr 195 heads on it.
On a 327 with that cam I'd be looking at the afr 180 eliminator heads .
Those heads flow 260cfm @ 500 lift and the low lift flow numbers which are as or more important flow very well relative to many if not all other aftermarket heads .
You dont want too large a runner for the cubic inches and in this case
Smaller = better and quicker .
More velocity versus volume .
Is it a small or large journal 327?
I've got a 67 327 block that is small journal.
The earlier 327's were small journal but I'm not sure what year . I'm pretty sure 67 was the last year for small journal.
Anyway small or large journal I personally wouldn't put anything bigger than 180 cc head on that motor.
Good luck in your quest.
That hunk of iron block is a piece of classic sbc history!