Migster69

I agree with your statement of "not as cast". But wouldnt that also include altered valve sizes? Anyway, Vortecpro in just the third quote from his post he describes what he does to the heads. "I fully port the intake and exhaust, and chamber, although you don't want to get them to thin. 1.88/2.190 valves." So, good porting and little bigger valves. Then he actually posts flow numbers on heads before and after porting. Post 33 "Flow test on the un ported 236 heads with a 2.190 intake valve installed. Its interesting to compare these flow numbers with other heads of the muscle car era. Bad Port .200 143 .300 205 .400 228 .500 238 .550 Done Good Port .200 144 .300 206 .400 238 .500 245 .550 Done 2.190 intake valve, no back cut, 4.310 bore, tested @ 28 inches." Two post later somebody else posted flow for stock 781 heads. "781's? you can see some stock flow specs here: http://www.users.interport.net/s/r/srweiss/tablehdc.htm intake with stock 2.06 valve .100 100 .200 142 .300 190 .400 217 .500 238 .600 270" If you are looking for a good solid, daily drivable engine, that will make people do a double take when you tell them what you have and how little you had to pay for it, go with the 236. Port them yourself if you feel you can. Or have a good shop do the work. I will be attempting the porting myself the help of a great book that was recommended by some locals, it's David Vizards How to Port and Flow Test Cylinder Heads. I will be building the budget flow bench as outlined in the book. And testing my porting ability frequently as I get into my heads. Take another look at the numbers in screenshot of dyno pull, and ask your self if that isn't enough for a daily runner budget engine that is happy with pump gas.

Regarding peanut 236 casting heads. Has anybody here checked the Chevelle site or heard anything about member there named Vortecpro? I am in tear down phase of an 82 14015445 stamped block with the 236 peanut heads.Vortecpro has a very long post about his build to strip test of a 467ci, mild cam, low 9.2 compression, peanut head engine that doesn't "sound" like much. Link to post is below, long read but tons of info. Guy doesn't keep any secrets. Also search YouTube for Vortec pro peanut and watch some of the testing in full body Chevelle and dyno pulls. I will post screen shot below from one pull. http://www.chevelles.com/forums#/topics/794225?page=1&_k=dcuplw