Pro Comp Big Block Heads

Discussion in 'High Performance Modifications' started by Alex71RS, Feb 13, 2007.

  1. Alex71RS

    Alex71RS Veteran Member

    826
    0
    Feb 13, 2000
    Apple Valley, CA 92307
    I'm building a 496 for one of my other projects, and have been looking for a pair of suitable heads for it. I have been looking on-line, and keep coming across these aluminum Pro Comp heads that a bunch of people on ebay are selling. Does anybody here have any experience with these heads? The price is right, $1175 a pair assembled. The specs are decent, too. 320cfm intake ports, 2.25/1.88 valves, good springs, pressure castings. I really want the AFR 320, but the price tag of $2250 is harder to come by than the $1175for the Pro Comps. You get what you pay for, but are the Pro Comps decent?
     
  2. MyBoTy

    MyBoTy Veteran Member

    1,535
    1
    Feb 9, 2002
    Lubbock, Texas USA
    They're cheap Chinese knock-offs of Pro Topline heads. Decks are thin and it's a fair copy at best. Runner walls are so thin that the boss for the spring pads extends into the port. Helicoils for rocker studs penetrate the intake port about 1/4". These weigh 6 - 7 lbs less than the lightest comparable head - saving weight for shipping plus less material cost. Ports are way too short at the port opening and it's questionable as to whether there's enough material to even gasket match 'em. Valve seats are all over the place. You'll spend more making this work than a good set will cost you. I've had 'em on a bench and compared 'em to Dart, Brodix and Pro Topline. They're cheap junk and that's a fact, not just my opinion.
     
  3. crailbait

    crailbait Veteran Member Lifetime Gold Member

    I actually spoke with one of the sales reps this past Saturday...They will still need to be worked once you buy them..The valves wont seat right right out the box...They only sell bare heads as well...He stated they are made in and from Austrailia..Hmmmmm......From what my engine builder said, they are decent heads but do need to be worked...Like you said, you get what you pay for...

    Jeff C.
     
  4. GearHead72

    GearHead72 Veteran Member Gold Member

    921
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    May 24, 2004
    Shawnee, KS
    Based on what I've read, MyBoToy hit it on the head. If you want more information, jump over www.chevelles.com and do a search on the Procomp heads. People have used them, but not really saved in money once they get them to a useable point.
     
  5. 79Z-28

    79Z-28 Veteran Member Lifetime Gold Member

    1,188
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    Dec 28, 2004
    Crandall, TEXAS, USA
    I was looking at these too and the price is what got me.I will pay the price for a good set now,just have to save a little longer.Glad to see someone asked the question.
     
  6. Alex71RS

    Alex71RS Veteran Member

    826
    0
    Feb 13, 2000
    Apple Valley, CA 92307
    That is good information to know. It looks like I'll have to save up a little more and get some Darts, Brodix, or AFRs. Nothing pisses me off more than spending money on a brand new part and then spending a bunch more just getting it to work.
     
  7. MyBoTy

    MyBoTy Veteran Member

    1,535
    1
    Feb 9, 2002
    Lubbock, Texas USA
    The shop I frequent has pretty much used 'em all. They like Brodix, they're more heavy duty with thicker decks, etc. They're also the only one that these guys will bolt on out of the box - they have very high quality valve jobs, good springs, valves, etc. and are set up dead-on to specs. If you're not planning on going all-out, any of the ones you listed are fine. Don't forget the original Pro Topline/RHS stuff. They're very good heads for the street if you can get 'em at a good price. I see 'em from time to time bare at about $1250, they're definitely worth that. You'll know they're not the counterfeit junk because they'll have either Pro Topline or RHC cast into them in a couple of spots - plus you'll see the quality.
     
  8. Old School

    Old School Veteran Member

    1,954
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    Jul 8, 2001
    Arlington, TX
    I can also assure you if you go with a AFR head, it will bolt on and go. No work needed. I put a 325CC head on my 496 without any problems at all, except for the tire shredding problem. :p

    Contact Mike Lewis about some AFR's or Brodix heads. He can get you better deal than you stated originally. His email is lewis1@willitsonline.com You can find over at the Chevelle board. Good guy to deal with and he didn't steer me wrong with my build.

    Michael
     
  9. MyBoTy

    MyBoTy Veteran Member

    1,535
    1
    Feb 9, 2002
    Lubbock, Texas USA
    I know they make great heads, but I've personally known several folks that have had problems with AFR valvetrain geometry requiring a bit of fitting. I understand most of it has been addressed but the most recent was only about a month ago, hopefully they're getting the rest of those problems ironed out. I've never seen or heard of a geometry problem with Brodix heads and I've seen tons of 'em bolted on.
     
  10. jester1

    jester1 Veteran Member

    I had a write up in the bs section I think it was and it was locked out by the modderater because i used a bad word. I had asked him to delete the word and repost it but he didnt. Ill make a long story short. Ive seen their socalled sales rep, he was a total looser! Unfreindly ignorant sob. If I was the PC owner I would have let him go on the spot!!!! Their booth was two tables combined with two cylinerhead a distributor, some rockers and rocker covers. Two table equalling about 20 feet or so. With only those items no paper work. nothing> this was at a show!!! Yea I buying from that company. When pigs fly. The cylinder heads were the worst chuck of alu. I had seen in quite some time. it looked real pourse. Thin thin casting. low quality. their rockers were nice from far, far from nice. the locking nut were blackish in color but not of the forged type. They were as light as a quarter and were definatly cast. Probably pull the threads with 100lbs of seat pressure. I wouldnt trust their dizzy as far as I can spit either. I would sugest the heads as a boat anchor but even then they will eithier float or rot in the water. If you have the money to burn I would really suggest donating it to me for my bbc build
     

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