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10-09-2010, 07:25 PM
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#1 |
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Registered User
Join Date: May 2010
Location: Broken Arrow Okla.
Posts: 510
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Pro Comp Heads
Bought a set of Pro comp heads for my BBC, I have seen a lot of bad comments on these hope I get lucky. anyway I can not find any spec info on these heads, I have found out what I need to know except what spark plugs are recommended for it anyone have any idea? Thanks
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1967 swb 454 cid 700R4 trans SOLD 2006 Chevy Trailblazer SS 2013 Camaro RS convertible the wife's Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=573248 |
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10-10-2010, 10:50 AM
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#2 |
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Registered User
Join Date: Feb 2010
Location: mesa az
Posts: 211
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Re: Pro Comp Heads
I haven't heard anything about those heads. If i were going to run alum heads, i would helicoil all the spots where the bolts maybe in and out, especially sparkplug holes. Good luck.
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10-10-2010, 12:49 PM
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#3 |
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Registered User
Join Date: Jan 2010
Location: Elgin Mn
Posts: 112
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Re: Pro Comp Heads
I if remember to I will ask my machinist as he has run these heads in the past with his low 9's camaro 454. I too heard a lot of bad about them and when I asked him, he just shrugged his shoulders and said he's had no problem. I would think you should be able to find info from the website.
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In the beginning of a change, the patriot is a scarce man, brave hated and scorned. When his cause succeeds however, the timid join him , for then it costs nothing to be a patriot. I am a revolutionary...so my son can be a farmer...so his son can be a poet. If there must be trouble, let it be in my day, so my child may have peace... 72 short step w/ 388 /4l80e/ and 3.08 gears. |
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10-10-2010, 01:55 PM
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#4 |
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Registered User
Join Date: Oct 2009
Location: Leesburg, VA
Posts: 424
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Re: Pro Comp Heads
Patriot, ProComp, all those budget suppliers source their heads and other castings from China. It can be a real crap shoot as to quality of both the machine work and the overall casting. Some parts in the past have had issues with core shift.
I have known several people to run these brands of heads with decent results, but they ALL needed to be disassembled, cleaned carefully, and inspected prior to installation. There were often problems with shavings, metal chips and the like stuck up in the ports. Also check the valve guides and test fit your rocker arms to make sure the machining geometry is as it should be. Oh yeah, it won't hurt to lay a straight edge on the deck either. |
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10-10-2010, 06:35 PM
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#5 |
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Registered User
Join Date: Jan 2010
Location: Elgin Mn
Posts: 112
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Re: Pro Comp Heads
I believe pro comp used to Aussie a long time ago....yeah forgot about the Chinese thing. It is your responsibility to check everything before it goes to the motor no matter who made it. I bought a few items from procomp putting my current motor together. After checking them before assembly I ended up selling everything I bought from procomp on ebay for pennies on the dollar. This included but not limited too fuel pump, Rockers, head studs, main studs. etc. It was a learning lesson I should have known. YOu get what you pay for.
__________________
In the beginning of a change, the patriot is a scarce man, brave hated and scorned. When his cause succeeds however, the timid join him , for then it costs nothing to be a patriot. I am a revolutionary...so my son can be a farmer...so his son can be a poet. If there must be trouble, let it be in my day, so my child may have peace... 72 short step w/ 388 /4l80e/ and 3.08 gears. |
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10-10-2010, 09:04 PM
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#6 |
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Registered User
Join Date: Jan 2005
Location: Australia
Posts: 215
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Re: Pro Comp Heads
I've heard of there engine bolts breaking, Personally I would spend the extra and get a quality item,
The enjoyment of quality is enjoyed long after the price is forgotten |
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10-10-2010, 09:15 PM
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#7 |
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Registered User
Join Date: May 2010
Location: Broken Arrow Okla.
Posts: 510
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Re: Pro Comp Heads
I have checked there web site with no luck. I just got done trying to install my valvetrain stuff and discovered my pushrod are way to short time for more research.
__________________
1967 swb 454 cid 700R4 trans SOLD 2006 Chevy Trailblazer SS 2013 Camaro RS convertible the wife's Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=573248 |
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10-10-2010, 11:47 PM
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#8 |
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Registered User
Join Date: May 2000
Location: Petrolia,Ontario,Canada but working in Port Huron,Mi.
Posts: 1,771
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Re: Pro Comp Heads
ProComp BBC heads #3021
Rectangle port 115cc OPEN chamber's flowing 320cc's. 3 angle valve job. Valves- intake->1.88, exhaust->2.25 That's all I have so far. Got these REAL cheap locally...we'll see.       Hope that helps. .
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71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE |
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