Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - edelbrock rpm performer heads 350 vs 383
View Single Post
  #14 (permalink)  
Old 11-06-2012, 10:14 AM
ssmonty ssmonty is offline
Registered User
Last photo:
Join Date: Mar 2007
Location: Corinth, MS
Posts: 698
Wiki Edits: 0

Thanks: 0
Thanked 53 Times in 50 Posts
"Yes they cnc the heads but do not cnc port the heads its just part of the manufactuing process. Cnc porting cost extra." No BS? They don't CNC port the head for free? Wow, I never would have though they would charge extra for time spent on a $250,000 5-axis machine. By the way, I never said anything about CNC porting.
"Also if you need more flow just buy a head that is desgined to flow more."
Just give him the money.
The op said he had a set of heads allready and that he was concerned that they may not be enough for a 383. I was trying the show him that they could be improved somewhat with a little work. I wasn't trying to tell him to do all I did, just some of many options he had to make them better.
"The reason not to port aftermarket heads is they do produce the numbers unmolisted. If you have an issue with the head you cant send it back if its cut. Get 210cc heads or 234cc heads."
Am I the only one that has tried to clean-up an aftermarket head? Do you think they'll take back the op's used heads if he does'nt grind on them? Maybe the op doesn't want to lose low end throtle response and torque by giong to a larger port head. He only said he wanted it "kinda hotish". I think he would be happy with a 383 with the Edel. heads he has, and I think he a would like them even more with a little work done.
Funny, your the one I see telling others to follow write-ups in Hot Rod magazine for engine builds. Don't I see Hot Rod doing articles on DIY porting now and then too?
Like I said, most wouldn't reccomend a dremel and I didn't have an air compressor. I also thought I could do what I wanted with a $30 rotary set I saw at Advance Auto vrs buying a $150 Milwaulkee grinder and $50 worth of bits for a one time job. You don't think an electric grinder can remove material very fast???? I still think a dremel style tool with a wand, and keeping it moving back and forth without letting it stay still for any length of time, with a sanding roll/cartridge just below the seat insert, and around the chamber, and the short side radius would do a decent job of bowl clean-up/ chamber polishing for the DIYer.
Reply With Quote