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Procomp heads: Can of Worms?

  • Thread starter Thread starter dbfarr
  • Start date Start date Feb 2, 2007

dbfarr

Member
Sep 17, 2005
191
0
17
Boise ID
Feb 2, 2007
#1
  • Feb 2, 2007
  • #1
What is the deal with these:

http://cgi.ebay.com/ebaymotors/FORD...270084903825QQihZ017QQitemZ270084903825QQrdZ1

Not that I contend they match up with say, Edelbrock, AFR, RHS, or any of the other big names. Still, if you're looking at reworking stock heads, can these be, economically and functionally, a better alternative?

I mean, for 750$, after springs etc., how bad of a deal is it. Especially since a friend of mine had his heads redone, broke several guideplates, bought several sets of springs, took them back and needed more machine work, he is way over 750$ (the valve spring reliefs were not deep enough). He talks about these Procomps all the time. Usually while spitting.

See here:

http://www.mercurycougar.net/forums/showthread.php?t=21240

and here:

http://www.mercurycougar.net/forums/showthread.php?t=23744

and here:

http://www.mercurycougar.net/forums/showthread.php?t=25925

and finally (hopefully) here:

http://www.mercurycougar.net/forums/showthread.php?t=26994

All because the machine shop failed to do it right the first time.

I am not trying to scare anyone (although I'm frightened, myself); I just wonder if a trip to the machine shop on these old heads is even worth the trouble anymore. At least as far as performance is concerned.

I am not against American products or labor. I am just against incompetence. Supposing we were to theorize that my friend's issues were due to a breakdown in communication, what's the difference in the end result? The machinist has a responsibility to understand his client's request, he failed. The heads were incorrectly prepared.

Woodsnake (my friend) is after all, a mechanic by trade. Therefore, he made his diagnosis on the assumption that the work he paid for was done correctly. It has been a year since the original head work was done…

Let's face it, not every machinist is a genius or even easy to work with. Getting an old set of heads reworked can be costly, emotionally and fiscally. Why not just bolt a set of these Procomp deals on for a budget build?
 

dbfarr

Member
Sep 17, 2005
191
0
17
Boise ID
Feb 2, 2007
#2
  • Feb 2, 2007
  • #2
To be fair,

Maybe I should include what a few minutes of research turned up:

http://www.corral.net/forums/showthread.php?t=565955

Seems they are much better if you find them assembled

http://www.corral.net/forums/showthread.php?t=861352

The second guy bought them for 874$ assembled.

Comments? Anyone?
 

Shakin66

Founding Member
Jan 19, 2001
628
1
19
Waycross, Ga / Lake James, NC
Feb 2, 2007
#3
  • Feb 2, 2007
  • #3
I just sold my iron gt 40 heads and was researching pretty heavily as to what heads to purchase. After talking and reading about the Pro comps I just cant in good conscience go with a head that has had some problems in the past with incorrect castings and non regulated metal controls......They do come from China after all. The man I bought my 195cc Dart Pro 1s from sells both and he stated he would MUCH rather see me invest in a head that has a reputable company behind them. Please understand I am not slamming as I have never actually laid eyes on them but a few hundered bucks saved on some China made heads seems kinda cheap to me. I do understand the their draw though....Decent #s and VERY cheap.
 
D

D.Hearne

New Member
Sep 29, 2000
11,730
6
0
south louisiana
Feb 2, 2007
#4
  • Feb 2, 2007
  • #4
The downside to those Procomp heads are the thinner .400 decks. Edlebrocks and just about all others have thicker .500-.625 decks. With aluminum heads and iron blocks thin decks equals bad problems sealing the gaskets.
 

65ShelbyClone

Founding Member
Sep 9, 2000
4,675
38
119
Antelope Valley, SoCal
Feb 3, 2007
#5
  • Feb 3, 2007
  • #5
dbfarr said:
Let's face it, not every machinist is a genius or even easy to work with. Getting an old set of heads reworked can be costly, emotionally and fiscally. Why not just bolt a set of these Procomp deals on for a budget build?
Click to expand...

Pro Comps seem to be a copy of Pro Topline/RHS heads and a gamble on quality. Porosity and dimensional stability appear to be the most troublesome. Livernois Motorsports had a barnfire sale on Pro Toplines over the last month or so. I would have picked some up, but all they had were 64cc heads.
 
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