1.6 rockers with stock 318 cam??
And this type of flow is possible with a 1.88/1.60 valve arrangement?
This is considered a full port job?
You should ask IQ52, for those numbers it just makes sense to use something at 2'' or bigger...i would think much diff between the 1.78 and 1.88....its just +.050
Is this a maxed out version? IMO yes.
The runner is just smaller cast inside, the outside parameter is almost like a 360. same push rod location, divider wall, just more to grind out 'except the guide'. The main difference is the guide, floor, ssr.
318 port floors are flatter.
take a 340 and put a set heads on like IQ52's in his example...then snap the throttle and tell us what u think....that is if the port is still smaller..lol
I will do a thread with 2.02's put into the 675's i have in the thread and report back.
Thing to remember is that a ported 340/360 head has better low lift numbers still...so where do you really end up better?
btw, IQ52..what port volume do you end up with?