ProComp BBC Heads - Chevelle Tech
Chevelle Tech join team chevelle as a supporting member  
Chevelle Parts at SS396.com      
GROUND UP & SS396.com         
Official Sponsor of Team Chevelle
     

Auto Insurance

Chevelles.com is the premier Chevrolet Chevelle Forum on the internet. Registered Users do not see the above ads.
Performance Our High Performance area

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old Oct 31st, 08, 12:41 PM
HVY70SS HVY70SS is offline
Tech Team
 
Join Date: Mar 2001
Location: Fort Montgomery NY
Posts: 46
Default ProComp BBC Heads

Hi,
I realize this subject comes up on other forums but I wanted to check here too. I recently picked up a 496 BBC with ProComp aluminum rect heads. It has a mild .650 lift hyd. roller and 10.1 comp. The short block has all good stuff, no questions there. Dynoed at 630 hp @ 5700 rpm. I'm not looking for any more HP, just reliability as this is a bracket-index type car. My tuneup is a bottle of shoe polish, if you know what I mean. Has anybody has any REAL problems with out of the box ProComp heads? I have heard everthing from 9 second ET's out of the box to "major surgery" required. Can somebody give me real life examples who are using them now? Thanks in advance!!
__________________
1970 Chevelle SS 3800lbs. 396/350 hydraulic cam Turbo 400 10" converter 4:56 posi 9x30 Hoosier radials 11.79 @ 114.69 1.64 60' & lookin for more!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old Oct 31st, 08, 1:45 PM
Jason Snyder Jason Snyder is offline
Senior Tech Team
 
Join Date: Jan 2006
Location: SANDIEGO
Posts: 2,059
Default Re: ProComp BBC Heads

Do a procomp search here ,and you will have a ton of info !
Reply With Quote Quick reply to this message
  #3  
Old Oct 31st, 08, 8:18 PM
rats4ever rats4ever is offline
Tech Team
jerry
 
Join Date: May 2007
Location: north mississippi
Posts: 386
Default Re: ProComp BBC Heads

Do a close inspection of pushrod to rocker to valve tip geometry.Mine were way off.Had to modify guide plates to correct.I believe another auminum head big name also mentions this and to use their plates for correct geometry.As for my experience so far,i've had good luck.I have nothing to compare to though because i assembled with these heads.As far as reliability,1 1/2 years of street driving with some 1/8 mile drag racing and no problems-----so far.As for performance,my car is a 67 chevelle street car,461 cubes,4000 converter,turbo 350,4.10 gears,3 inch exhaust,single plane intake,950 proform carb,255/607/108 bullet solid lift cam,10.5-1 compression and with 28x9 slicks it runs 7.00s@98mph with a 1.56 60 ft. time.Hope that helps.
Reply With Quote Quick reply to this message
  #4  
Old Oct 31st, 08, 8:44 PM
jbird jbird is offline
Senior Tech Team
wannabe
 
Join Date: Feb 2005
Location: The Sticks, TX
Posts: 3,210
Default Re: ProComp BBC Heads

I know of a set that have gone 5.3x@140 on a 468 with an F2 Procharger.
__________________
Jay Campbell
Campbell Competition Motorsports
Reply With Quote Quick reply to this message
  #5  
Old Nov 18th, 08, 11:38 AM
CamaroTypeLT CamaroTypeLT is offline
Cliff
 
Join Date: Nov 2008
Location: Garland TX.
Posts: 19
Default Re: ProComp BBC Heads

Quote:
Originally Posted by rats4ever View Post
Do a close inspection of pushrod to rocker to valve tip geometry.Mine were way off.Had to modify guide plates to correct.I believe another auminum head big name also mentions this and to use their plates for correct geometry.As for my experience so far,i've had good luck.I have nothing to compare to though because i assembled with these heads.As far as reliability,1 1/2 years of street driving with some 1/8 mile drag racing and no problems-----so far.As for performance,my car is a 67 chevelle street car,461 cubes,4000 converter,turbo 350,4.10 gears,3 inch exhaust,single plane intake,950 proform carb,255/607/108 bullet solid lift cam,10.5-1 compression and with 28x9 slicks it runs 7.00s@98mph with a 1.56 60 ft. time.Hope that helps.
You have a very similar setup to what I have.... I was hoping for some 6.8 or so out of mine so it looks like I will be in the ball park. Mine is a 468 with the Pro Comp 320 heads, Manley valves and Isky springs, 10.5:1 speed pro pistons, Crower 252/262 @.050 .607/.620 lift on a 108CL, Holley strip Dominator intake, Holley 850DP, TH400 with a 4500 nitrous converter, 4:10 gears and 29.5X10.5 slicks. I also have a 275 shot on top just to move things along...lol.

As for any problems with the heads on assembley I have had no problems at all. I bought them assembled (minus the rocker studs and guide plates which I just used the ones out of my stock heads). The only 2 things I have had any issues with is getting the correct head studs for the heads and custom pushrods. Not that either is any big deal they are just differant than normal. When I ordered the head studs I was told that they were for these heads and they had 4 differant length studs. I needed the set that had only 3 differant lengths. So I ended up using 4 of my old head studs and all is well. As for the pushrods the long ones are your standard +.100 pushrod (9.350) but the short ones came out to be +.270 (8.550) But you can get them from Trickflow at a reasonable price. Other than that everything has gone well with the assembly. I have not encountered any of the "horror" stories that you keep seeing around. I know already that they do not flow anywhere near what they advertise but that is no big suprise. From the flow numbers I have found from reputable machine shops that have posted them they actually flow around 330 on the intake and 230 on the exhaust which is not bad at all. Pluse you lose and extra 100 pounds off the front of the car which is never a bad thing.

Hear are a few pics of my heads and them on the motor.




















On a side note I am runing an oval port intake with these heads. I tried cheap felpro oval port intake gasket on them and the port stuck out over the top of the gasket but with an Ultra seal large oval port intake gasket it all works nicley. My intake is also ported to that intake gasket so it all works out well. You can see in one of the pics how the ports line up.

Sorry for such a long post but I thought I would give a little detail since I never could find and worthwhile info when I was searching for information on these heads.

Last edited by CamaroTypeLT; Nov 18th, 08 at 11:52 AM.
Reply With Quote Quick reply to this message
  #6  
Old Nov 18th, 08, 11:58 AM
joes66 joes66 is offline
Tech Team
Joe
 
Join Date: Sep 2006
Location: Indiana
Posts: 714
Default Re: ProComp BBC Heads

I have them on my 69 chevelle and so far no problems.I run a 468 with 10.3 actual compression and a bullet 580 lift 255/265 at .050 camshaft.The geometry isnt dead on and you will probably have to work on the intake ports to get your intake to fit properly.I used a square port intake and it took alittle work to get the ports even close.I bought my pushrods from trend after measuring for the right length.This is a situation of getting what you pay for.I have heard the horror stories about these heads but so far in my situation and a few others they are working fine.If you have a unlimited buget then buy the the 2500-3500 afrs.When I bought mine I got them to my door complete for 950.00 brand new.I wanted to try them for that price.Good luck
Reply With Quote Quick reply to this message
  #7  
Old Nov 18th, 08, 12:47 PM
CamaroTypeLT CamaroTypeLT is offline
Cliff
 
Join Date: Nov 2008
Location: Garland TX.
Posts: 19
Default Re: ProComp BBC Heads

That is pretty much the same reason I got them.... I am not made of money. It was still hard to come up with $1,000 for a set of heads but I was able to do it. But there is no way I would be able to come up with $2,500 - $3,500 for a "good" set of heads unless I sold a car to do it...lol.
Reply With Quote Quick reply to this message
  #8  
Old Nov 18th, 08, 2:54 PM
2k3Chevelle468 2k3Chevelle468 is offline
Senior Tech Team
Elm
 
Join Date: Jul 2003
Location: Texas
Posts: 1,172
Send a message via AIM to 2k3Chevelle468
Default Re: ProComp BBC Heads

There are plenty of cars running damn well with them. I think the key is to have them checked and prepped by a respected shop prior to installation. Many buy them unassembled and have there machinist assemble them with good parts. I know of a set that is running 8's with N2O.
Reply With Quote Quick reply to this message
  #9  
Old Nov 18th, 08, 3:10 PM
69-CHVL 69-CHVL is offline
Senior Tech Team
Vinny Vince
 
Join Date: Jun 2003
Location: Thornton, Pa
Posts: 12,362
Default Re: ProComp BBC Heads

When they say the geometry is off, do they mean b/c of the guideplates? If so, that's not a big deal. I've had a set of Edelbrock heads and AFR heads that needed work with the guideplates. Now, if the rocker stud is not where it needs to be vs. the valve tip, or vice versa, now we have a major problem.
__________________
*69 CHEVELLE SS EFI 502/T56/3.90
*06 C6 LS2/T56
*96 Stang LS/6.0 turbo - everyone should have one!
Reply With Quote Quick reply to this message
  #10  
Old Nov 18th, 08, 4:03 PM
Jebchevelle Jebchevelle is offline
Lifetime Premium Member
Jeff
 
Join Date: Feb 2008
Location: ColoradoSprings, CO
Posts: 3,861
Default Re: ProComp BBC Heads

Quote:
Originally Posted by CamaroTypeLT View Post
That is pretty much the same reason I got them.... I am not made of money. It was still hard to come up with $1,000 for a set of heads but I was able to do it. But there is no way I would be able to come up with $2,500 - $3,500 for a "good" set of heads unless I sold a car to do it...lol.
DId you look at patriot heads Gunner is the owner and he is here on team chevelle I have herd both good and bad about them but I spoke with gunner about a set of both sbc for my 350 and a set of bbc heads for my 468 his prices are great for a complete head. here is a link.
https://www.patriot-performance.com/...&cat=33&page=1
you can find him here under Gunner. might wanna look him up.
just my 2 cents.
__________________
78 Malibu 454 9.6:1 comp with Brodix RR Ovals and no cam yet, Moral lifters. th350,stall ?, ford 9in full floater with 3.70 gears and lightweight locker, 28X10-15 Hoosier QuickTime Dot tires.
Reply With Quote Quick reply to this message
  #11  
Old Nov 18th, 08, 4:25 PM
CamaroTypeLT CamaroTypeLT is offline
Cliff
 
Join Date: Nov 2008
Location: Garland TX.
Posts: 19
Default Re: ProComp BBC Heads

I read a thread on hear where he was talking about his heads and the Pro Comp heads and the differances between them. I looked at them also but they were just a little out of my price range. But if I had the time to save up a little extra money I probably would have gone that rout. I have a friend that has a set of the Patriot heads on his small block Corvette.
Reply With Quote Quick reply to this message
  #12  
Old Nov 18th, 08, 6:09 PM
Jebchevelle Jebchevelle is offline
Lifetime Premium Member
Jeff
 
Join Date: Feb 2008
Location: ColoradoSprings, CO
Posts: 3,861
Default Re: ProComp BBC Heads

Quote:
Originally Posted by CamaroTypeLT View Post
I read a thread on hear where he was talking about his heads and the Pro Comp heads and the differances between them. I looked at them also but they were just a little out of my price range. But if I had the time to save up a little extra money I probably would have gone that rout. I have a friend that has a set of the Patriot heads on his small block Corvette.
well call him and let him know what your budget is he is a very nice guy and he mey be able to help. I told him how much I had to spend on the sbc heads and he really helped me out. And if memory serves he gives discounts to TC members but dont qoute me on that as Iam not totally sure you will just have to ask him.
__________________
78 Malibu 454 9.6:1 comp with Brodix RR Ovals and no cam yet, Moral lifters. th350,stall ?, ford 9in full floater with 3.70 gears and lightweight locker, 28X10-15 Hoosier QuickTime Dot tires.
Reply With Quote Quick reply to this message
  #13  
Old Nov 18th, 08, 6:16 PM
CamaroTypeLT CamaroTypeLT is offline
Cliff
 
Join Date: Nov 2008
Location: Garland TX.
Posts: 19
Default Re: ProComp BBC Heads

I would if I didn't already have my heads.
Reply With Quote Quick reply to this message
  #14  
Old Nov 18th, 08, 6:59 PM
Jebchevelle Jebchevelle is offline
Lifetime Premium Member
Jeff
 
Join Date: Feb 2008
Location: ColoradoSprings, CO
Posts: 3,861
Default Re: ProComp BBC Heads

Quote:
Originally Posted by CamaroTypeLT View Post
I would if I didn't already have my heads.
AHH good point guess I should have asked if you had already bought the Procomps. live and learn then get loves I guess
I just dont like procomp parts reasons are too much to get into suffice to say they have cost me way more then I eversaved by getting them nuff said about that. hope they work great for you.
Jeff
__________________
78 Malibu 454 9.6:1 comp with Brodix RR Ovals and no cam yet, Moral lifters. th350,stall ?, ford 9in full floater with 3.70 gears and lightweight locker, 28X10-15 Hoosier QuickTime Dot tires.
Reply With Quote Quick reply to this message
  #15  
Old Nov 18th, 08, 11:37 PM
Bowtie Fan Bowtie Fan is offline
Lifetime Premium Member
Dwayne
 
Join Date: Nov 2007
Location: ON
Posts: 65
Default Re: ProComp BBC Heads

I hope yours don't look like these when the rockers go on....These heads came assembled from PC .I emailed them these pics and more we'll see what they do. ="http://i28.photobucket.com/albums/c2...a/P1000486.jpg" border="0" alt="Photobucket"></a>
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply
Chevelle Tech > General Tech Area > Performance      Current Topic: ProComp BBC Heads
Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may post new threads
You may 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

Forum Jump


All times are GMT -4. The time now is 3:30 PM.


Is there a site like this for?    El Caminos Camaros Novas Impalas GTO Chevy Punch All Chevys

2009 Team Chevelle - AutoForums