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03-26-2003, 06:04 PM
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#1 |
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Registered User
Join Date: May 2000
Location: Flin Flon, Manitoba, Canada
Posts: 8,853
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high compression heads
Is it, the smaller the chamber, the higher the compression?
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My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795 |
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03-26-2003, 06:11 PM
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#2 |
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Senior Moment
 
Join Date: Mar 2002
Location: Pittsburg Ca
Posts: 4,189
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YES
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1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565 |
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03-26-2003, 06:12 PM
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#3 |
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Registered User
Join Date: May 2000
Location: Flin Flon, Manitoba, Canada
Posts: 8,853
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COOL!!! I just picked up a set of heads from a customer of mine that are off his 69 C30 . I ran the number through mortec.com and they came up as being 60 cc chamber
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My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795 |
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03-26-2003, 06:44 PM
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#4 |
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Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Big question is what is the valve size. They're not 307 heads, are they? Finally figured out that the p.o. put small chamber 307 heads on mine, which explains its performance.
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Fred There is no such thing as too much cam...just not enough engine. 
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03-26-2003, 06:48 PM
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#5 |
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Registered User
Join Date: May 2000
Location: Flin Flon, Manitoba, Canada
Posts: 8,853
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These came off his 350 that came with the truck. This is what www.mortec.com says about them
376450.....75-81...262/267/305..6 or 7 exhaust bolt holes, 60cc chamber HMMMM guess they aren't factory then eh 
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My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795 |
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03-26-2003, 07:03 PM
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#6 |
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CCRider
Join Date: Feb 2000
Location: Olive Branch,MS,USA
Posts: 2,232
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Heres a page with the ups and downs of putting 305 heads on a 350
http://c6firebird.freeservers.com/3rdgen2.html
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72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS |
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03-26-2003, 07:43 PM
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#7 |
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Registered User
Join Date: May 2000
Location: Flin Flon, Manitoba, Canada
Posts: 8,853
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so by the looks of it, these heads should be ok for just a daily around town cruiser? It says they are great for up to 5000 rpms.
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My name's Tim and I'm a truckaholic My 56 Chevy shop truck build http://67-72chevytrucks.com/vboard/s...d.php?t=562795 |
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03-26-2003, 09:23 PM
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#8 |
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14.1 @ 96MPH
Join Date: Jul 2001
Location: Mesa, AZ
Posts: 2,811
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It'll work, and you'll get some good compression...but yeah, after 5000RPMs you should be toast, just from lack of flow...
And I love the avatar. "From Aurora, Illinois..."
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