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Author
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Topic: Compression?
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Hell_Fish
Gearhead Posts: 672
From: Austin, TX.
Registered: May 2002
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posted 11-22-2002 09:26 AM
   
What was the stock compression of a 69 302 2bbl? How much is it raised with a pair of C9 351W heads(69)?Thanks,
Dustin C.
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68DARKHORSE
Gearhead Posts: 378
From: Austin, Tx
Registered: Aug 2002
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posted 11-22-2002 09:59 AM
Dustin, I have a 351W you could put under those heads.Your engine came with 58cc heads. The W's are 60cc.
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68DARKHORSE
Gearhead Posts: 378
From: Austin, Tx
Registered: Aug 2002
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posted 11-22-2002 10:07 AM
Are they C9OE's?
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69 Sportsroof
Gearhead Posts: 1214
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 11-22-2002 10:16 AM
quote:
Originally posted by 68DARKHORSE:
Your engine came with 58cc heads. The W's are 60cc.
4 bbl heads have 58cc combustion chambers. 2 bbl heads have 63cc cumbustion chambers. http://www.mustangii.org/tech/heads.shtml More info...
http://www.thecarsource.com/fords/engines/302engine.html [This message has been edited by 69 Sportsroof (edited 11-22-2002).]
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Hell_Fish
Gearhead Posts: 672
From: Austin, TX.
Registered: May 2002
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posted 11-22-2002 10:20 AM
So it should be around 3cc better, right?Alton, you got a spare 351W? You stopping by today?
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Hell_Fish
Gearhead Posts: 672
From: Austin, TX.
Registered: May 2002
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posted 11-22-2002 10:23 AM
Thanks for the sites 69 Sportsroof. Its good to know the 2bbl 302 wasn't that bad in 69.
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68DARKHORSE
Gearhead Posts: 378
From: Austin, Tx
Registered: Aug 2002
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posted 11-22-2002 10:30 AM
On my way.
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SteveLaRiviere
Administrator Posts: 33988
From: Saco, Maine
Registered: May 99
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posted 11-22-2002 10:48 AM
quote:
Originally posted by Hell_Fish:
What was the stock compression of a 69 302 2bbl?
9.5:1
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'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Be sure to remember our sponsors, Mustangs Plus, NPD, and Osborn Reproductions.
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JCQuinn@work
Gearhead Posts: 440
From: Lakewood, CO, USA
Registered: Jun 2001
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posted 11-22-2002 11:22 AM
One thing to keep in mind is that heads from the factory seldom match the published spec. When I prepared heads for stock or SS engines I always had to mill the head to get to the published CC value. If you want to know your static compression ratio you need to actually measure the CCs in your head.John
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Moneymaker
Administrator Posts: 19751
From: Lyons, IL, USA
Registered: May 99
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posted 11-22-2002 11:33 AM
Mainstream production FoMoCo heads are rarely even close to spec!
John is 100% correct.  ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
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Hell_Fish
Gearhead Posts: 672
From: Austin, TX.
Registered: May 2002
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posted 11-22-2002 12:16 PM
Yeah, I know. I was just wanting a rough idea of where the compression should be at on my 302 with 351W heads. Thanks.
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68DARKHORSE
Gearhead Posts: 378
From: Austin, Tx
Registered: Aug 2002
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posted 11-22-2002 12:49 PM
quote:
Originally posted by 69 Sportsroof:
4 bbl heads have 58cc combustion chambers. 2 bbl heads have 63cc cumbustion chambers.
What's the engine code on a 1969 302 4V(non-Boss)?
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68DARKHORSE
Gearhead Posts: 378
From: Austin, Tx
Registered: Aug 2002
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posted 11-22-2002 12:56 PM
The chart on http://www.mustangii.org/tech/heads.shtml does not indicate what is 2V and 4V. It also shows 53.5cc for 68-70. The 53.5cc 302 4V head is for '68 only.
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68DARKHORSE
Gearhead Posts: 378
From: Austin, Tx
Registered: Aug 2002
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posted 11-22-2002 01:01 PM
Dustin, the car looks great. Keep up the good work.
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69 Sportsroof
Gearhead Posts: 1214
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 11-22-2002 01:14 PM
quote:
Originally posted by 68DARKHORSE:
What's the engine code on a 1969 302 4V(non-Boss)?
There aint one, at least not one that I can find. For a 4bbl on a 69 302 you had to go with a Boss which is G. However, in 68 you could get a 4v 302 which had a code of J.
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69 Sportsroof
Gearhead Posts: 1214
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 11-22-2002 01:24 PM
quote:
Originally posted by Hell_Fish:
Thanks for the sites 69 Sportsroof. Its good to know the 2bbl 302 wasn't that bad in 69.
Tell me about it. My Haynes book says I have 8.41:1 or some dogged out number like that. I think it runs pretty good even with 2.79's in the rear... 
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