Any ProComp Motorsports LS1 head users? - Page 2 - LS1TECH - Camaro and Firebird Forum Discussion



Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Any ProComp Motorsports LS1 head users?

Reply
 
Thread Tools Search this Thread
Old 03-28-2013, 10:32 PM   #21
TECH Fanatic
 
2000PewterT/A's Avatar
 
Join Date: Jul 2011
Posts: 1,075
Default

So far these don't seem to be consistent in any way shape or form with what they are advertized as, at least according too the 2 post above me.
2000PewterT/A is offline   Reply With Quote
Old 04-02-2013, 05:42 PM   #22
Banned
Thread Starter
iTrader: (9)
 
Join Date: Feb 2011
Location: Houston,Tx
Posts: 167
Default

Quote:
Originally Posted by 2000PewterT/A View Post
So far these don't seem to be consistent in any way shape or form with what they are advertized as, at least according too the 2 post above me.
you will find some inconsistencies with just about every head. I am not worried one bit if the deck surface was thicker than expected as long as they flowed the numbers I purchased them for.
1990LSx is offline   Reply With Quote
Old 04-02-2013, 10:50 PM   #23
On The Tree
 
showvette's Avatar
 
Join Date: Nov 2012
Posts: 116
Default

OK... Here's the whole story about these Procomp heads. In a nut shell, they suck! I took them to have them flow benched, and to say they didn't come close to advertised numbers is an understatement. I took them to the same shop that have flowed other heads for me previously. They do alot of Pro Mod head work. How far off were they? Procomp claims 291/203 @ .600". These heads actually flowed 270/168 @ .600". The exhaust only flowed 174 @ .750"!. Max intake @ .700" was only 274! I was also told the valve job was terrible. The exhaust flow on these is actually WORSE than stock 241s. A 241 flows 198 @ .600" on the exhaust. These are going back and I'm sending my 241s to Lloyd Elliot. My advice is to stay away from this Procomp junk.

Frank
showvette is offline   Reply With Quote
Old 04-04-2013, 02:53 PM   #24
TECH Senior Member
iTrader: (28)
 
studderin's Avatar
 
Join Date: Nov 2005
Location: Rochester, NY
Posts: 5,557
Default

so there not some killer race part thats alot cheaper then others! OMG

I thought that other thread said how "nice" they looked? dont that matter for anything? there CNC ported you know, must be good
studderin is offline   Reply With Quote
Old 04-15-2013, 09:35 PM   #25
TECH Regular
iTrader: (3)
 
Join Date: Aug 2010
Posts: 451
Default

I runs a set of cnc ls3 procomps , on a 408 and the car trapped 123 in the 1/4 full weight f-body. granted they were stock pc castings cnc'd by walker racing, flowed 360 at 600. I don't see why everyone always bashes them, especially when most have not even ran them. I know some have and have not had luck. But I really believe that number is much less than the ones who have had good luck.
stevecritt is offline   Reply With Quote
Old 04-15-2013, 09:39 PM   #26
TECH Regular
iTrader: (3)
 
Join Date: Aug 2010
Posts: 451
Default

oh yeah and that 123mph was through a t56 on stock rims and tires. just saying, car would not run like that if they weren't decent heads.
stevecritt is offline   Reply With Quote
Old 04-15-2013, 10:02 PM   #27
11 Second Club
iTrader: (1)
 
Join Date: Sep 2004
Posts: 11,998
Default

cnc'd by someone else could correct a poor design and luck could get you past bad QC
96capricemgr is offline   Reply With Quote
Old 04-15-2013, 10:31 PM   #28
TECH Regular
iTrader: (3)
 
Join Date: Aug 2010
Posts: 451
Default

true, but I still only payed 1300 fully assembled with dual valve springs. can't beat that deal. all i got to say. lol
stevecritt is offline   Reply With Quote
Old 04-15-2013, 10:36 PM   #29
11 Second Club
iTrader: (1)
 
Join Date: Sep 2004
Posts: 11,998
Default

thinking you could do just as well with 243s ported for similar coin.
96capricemgr is offline   Reply With Quote
Old 04-15-2013, 10:40 PM   #30
TECH Regular
iTrader: (3)
 
Join Date: Aug 2010
Posts: 451
Default

you have to be joking.
stevecritt is offline   Reply With Quote
Old 04-15-2013, 11:43 PM   #31
TECH Senior Member
iTrader: (28)
 
studderin's Avatar
 
Join Date: Nov 2005
Location: Rochester, NY
Posts: 5,557
Default

or stock LS1 heads
studderin is offline   Reply With Quote
Old 04-16-2013, 12:02 AM   #32
TECH Regular
iTrader: (3)
 
Join Date: Aug 2010
Posts: 451
Default

I'm not even seeing the real potential of these heads with the baby cam I'm running. You can't tell me 241/243s would be better even ported to the maxxx!. yall are crazy.
stevecritt is offline   Reply With Quote
Old 04-16-2013, 04:21 AM   #33
TECH Enthusiast
iTrader: (3)
 
roninsonic's Avatar
 
Join Date: Sep 2011
Location: Mayport, FL
Posts: 575
Default

I've read a LOT of reviews about their crappy QC... But I've never used a set, so I dunno. I'm spoiled, I have AFR's lol
roninsonic is offline   Reply With Quote
Old 04-16-2013, 05:58 PM   #34
11 Second Club
iTrader: (1)
 
Join Date: Sep 2004
Posts: 11,998
Default

Quote:
Originally Posted by stevecritt View Post
you have to be joking.
I am not that up on the LS stuff but I do know there are heads/cam LT1 carS running near that, 350s with ported GM 23degree stuff.

I would expect more from a aftermarket head stroker LS.
Hell some of the porting programs for 243s have been tested better than CNC'd quality aftermarket castings
96capricemgr is offline   Reply With Quote
Old 04-16-2013, 06:12 PM   #35
TECH Regular
iTrader: (3)
 
Join Date: Aug 2010
Posts: 451
Default

I would like to see that info, as far as after market ls3's and ported 243's are concerned. (no disrespect) and again, that a hell of a trap speed with a 2.6 60ft with a m6 and 3.42 rear. I can't even touch the throttle hard until I'm out of 1st and half way into 2. just lights up the tires.
stevecritt is offline   Reply With Quote
Old 02-12-2014, 05:04 PM   #36
TECH Addict
iTrader: (2)
 
AINT SKEERED's Avatar
 
Join Date: Apr 2002
Location: Albany La
Posts: 2,462
Default

Quote:
Originally Posted by stevecritt View Post
oh yeah and that 123mph was through a t56 on stock rims and tires. just saying, car would not run like that if they weren't decent heads.
My lq4 bottom end and mildly ported 241's with f14 can traps 122 with 10.3/1 compression at 3850 lbs on 17" wheels .
That 408 should do better
AINT SKEERED is offline   Reply With Quote
Old 02-12-2014, 06:55 PM   #37
11 Second Club
iTrader: (1)
 
Join Date: Sep 2004
Posts: 11,998
Default

There are a handful of LT1s with stock shortblocks trapping 118-122mph just heads and cam, not news atall well documented.

I am sure the poster has not put an ET in his sig because it runs 10.0 in street trim and he is making a living street racing for cash.
96capricemgr is offline   Reply With Quote
Old 03-17-2014, 09:41 PM   #38
TECH Fanatic
 
Join Date: Jan 2010
Location: South of Augusta,GA
Posts: 1,339
Default

All I can say is Ive run a lot of Procomp stuff, and I have no problem with there parts! There price is better than most. A lot of company buy there stuff stamp there name on it, and jack up the price! Just ordered cnc heads, and Hot Rod showed where they out performed AFRs. Also I have seen some high dollar heads come messed up, so Im sure they may have that problem just like high dollar parts! Ill try them if they don't do well it wont hurt as much as a 2500 set. I got friend that only shop at the mall for the name brand stuff, Im not that guy! Try it if you want!
MillsMotorvation is offline   Reply With Quote
Old 05-09-2014, 07:12 AM   #39
On The Tree
 
Join Date: Dec 2011
Location: Gold Coast, Australia
Posts: 129
Default

I have a set of the pro comp 3017 fully cnc 225 64cc bare no valve job heads (for 2.02 /1.55 valves). I have only just received these from speedmaster but I can tell you that mine certainly do not look anywhere near as bad as the ones showvette posted pics of. Mine look fairly decent. I have had tsp cnc heads before and even with them I still sent them to my cylinder head guy to hand finish them and flow them. These pro comp heads will be no different. For the price they are a good base to go on and for the extra couple hundred bucks , they will be hand finished to suit the lift of my cam.

The tsp heads flowed @566.4hp so be interesting to see what the PC ones flow.
ls1 down under is offline   Reply With Quote
Old 05-09-2014, 08:45 PM   #40
TECH Enthusiast
iTrader: (1)
 
.boB's Avatar
 
Join Date: Jan 2014
Location: Colorado Springs, CO
Posts: 721
Default

Pro Comp parts are cheap chinese knock off's of American developed parts. You get what you pay for (if you're lucky). There is no place on my race car for Pro Comp parts.

Never buy cheap parts. They're too expensive.
.boB is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Basic Question oldfogey47 Generation III Internal Engine 1 03-29-2017 12:54 PM
2010 Camaro Paint Correction + Optimum Gloss Coat (New Formula) The Guz Appearance & Detailing 9 12-24-2015 04:51 PM
Performer RPM VS Victor JR Dyno test speedtigger Carbureted LSX Forum 40 10-13-2014 07:55 PM
LSA - Oil squirter - Real data needed locospl Generation IV Internal Engine 6 09-29-2014 09:39 AM
Why does the L76 have less hp than LS2? nelson71 Generation IV Internal Engine 23 02-25-2007 04:27 PM


Tags
cadillac, comp, head, heads, ls1, ls1tech, machine, motorsport, motorsports, powered, precision, pro, procomp, studs, vbulletin

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 04:27 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: