engine and manifold id
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Junior User
Joined: Feb 2002
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From: Nashville USA
engine and manifold id
I've been looking on the web for a site that has engine casting codes with not much success.. did locate one site that explained where to look and gave and example, lucky me it was C80E 6015-A which is what mine is (302) but I need help with the intake manifold. now this is tricky, it's a 4 barrel intake and the number was hard to make out, it looks like "C80E 6425-B" does this make sense to anyone?
Thanks in advance
Thanks in advance
Laughing Gas
Joined: Oct 1999
Posts: 1,165
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From: central Alberta
engine and manifold id
What do you want to know about the numbers? The 6425 indicates a manifold casting just like the 6019 identifies a block casting. C8OE is the year (C=60's, 8 makes it 68). O is the car line. Dennis (aka MIL1ION) has a great Ford part number decoder attached to his posts. 
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engine and manifold id
[updated:LAST EDITED ON 11-Feb-02 AT 11:56 PM (EST)]That engine is out of a 68 designed for a Fairlane.
Could be used in other models.
This is engine code * J* 230hp 4bbl
The intake has had one change-up to it.
Dennis
Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
Could be used in other models.
This is engine code * J* 230hp 4bbl
The intake has had one change-up to it.
Dennis
Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
Thread Starter
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Junior User
Joined: Feb 2002
Posts: 93
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From: Nashville USA
engine and manifold id
hmmm, so someone took a 302 out of a fairlane and put it in this truck, that could explain why no one could match that mystery carb when I first got it. They were looking on their computer under "truck"... makes me wonder about the 3-speed tranny too... was it a package deal... I'll look for more codes...
and.. Thanks
and.. Thanks
Elder User
Joined: Aug 2001
Posts: 962
Likes: 2
From: Collierville, TN
engine and manifold id
Not exactly. "C8OE" is the engineering code. It just means that the part design was released to production in 1968 (that's the "C8" portion), that it was originally designed for the Fairlane car line (the "O"), and that it was designed by the engine group (the "E") as opposed to the chassis or body groups. The four digits after the dash are the common code for an intake manifold. The last letter is the engineering revision, so being a "B" you know it is the 2nd version of an intake manifold originally designed in 1968 for use on a Fairlane engine.
That doesn't mean it came off a Fairlane engine, however. For example, Ford decided midway through the 1969 model year to start making the 302 available in light trucks. Ford did not go out and design an all new intake manifold, of course. Rather, it simply used ones it had on the shelf. It is not only possible but likely that Ford would use Fairlane and other parts for the 302 it was putting into trucks. Thus, the "C8OE" doesn't tell you anything about whether your truck came from the factory with that engine or intake manifold.
That doesn't mean it came off a Fairlane engine, however. For example, Ford decided midway through the 1969 model year to start making the 302 available in light trucks. Ford did not go out and design an all new intake manifold, of course. Rather, it simply used ones it had on the shelf. It is not only possible but likely that Ford would use Fairlane and other parts for the 302 it was putting into trucks. Thus, the "C8OE" doesn't tell you anything about whether your truck came from the factory with that engine or intake manifold.
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Junior User
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From: Nashville USA
engine and manifold id
I guess what I'm getting at is: performance issues, specifically, how do I know which parts to get for say a tune-up , like plugs, points, wires, or is there no significant difference between them. When I bought the truck it had a 4 bbl with no id tag and a thin spacer, none of the local shops could id the mystery carb sice their computers only listed a 2 bbl for a 302 in a '70 f100 2wd. So I finally bought a remanufactured 2bbl and an adapter kit. the plugs and points in it are also for a '70 f100. the engine was rebuilt before I got it. the reason why I'm asking - Occasionally I get some backfiring through the exhaust in situations where I'm letting the engine slow the truck down before down shifting like coming to a stop light. secondly I get an occasional fuel surge after turning the ignition off, like it still wants to run. I had earlier replaced the fuel pump (based on the '70 f100 302 knowledge). am I off base here or are these reasonable things to consider?
thanks for all the input...
thanks for all the input...
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Junior User
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From: Nashville USA
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New User
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engine and manifold id
Get me the numbers off the Air Horn of the carb.
Dennis
Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
Dennis
Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
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Laughing Gas
Joined: Oct 1999
Posts: 1,165
Likes: 3
From: central Alberta
engine and manifold id
Despite opinion to the contrary, I'd go with the engine swap theory as it's plain Ford didn't equip their 302 trucks with four barrels. One way to tell when the engine itself was built is to get the date code cast in above the starter on the lower right side of the engine. If the carb is original on that 302, it'll be an Autolite/Motorcraft 4300; new to the 68's. Had one on a 68 Cougar. If there are no numbers on the airhorn, they'll be on the left front corner of the base.
Elder User
Joined: Aug 2001
Posts: 962
Likes: 2
From: Collierville, TN
engine and manifold id
Lots of people swap the intake manifold and carb while leaving the block and heads alone. It's a quick and easy change. The intake and carb on his engine clearly aren't stock, but the rest of the engine may well be.
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Junior User
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From: Nashville USA
engine and manifold id
thanks for all the replies, as far as the original carb goes, it's missing... I can't find it anywhere, had it in a box out in my shed, can't even find the box now, but since my last post I've done a little more checking . talked to a guy at a napa store, he checked some reference books and concluded that it was most likely a 4300 model 4 bbl, he can get one special order for about $250, I'm assuming that's after core exchange, which now appearantly something I don't have, so it's probably more around $300, So now I'm thinking maybe it would be cheaper to change intakes (I've always been a little suspect of that adapter set up... anyone got any suggestions on a 2 bbl intake... and what about plugs, points, timing , etc... or is that insignificant?
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engine and manifold id
How about posting the head casting numbers with the casting date as well?
Just so we know.
Dennis
Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
Just so we know.
Dennis
Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"
78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
68-Mustang 289-Sunlit Gold 80,892Mi
78-Buick LeSabre 403 4V
84 Volvo DL Wagon
Laughing Gas
Joined: Oct 1999
Posts: 1,165
Likes: 3
From: central Alberta
engine and manifold id
I guess only the casting date codes will tell the truth here. As far as plugs, points etc, they should be similar to those years. Maybe check the listing for 68 plugs to make sure it's the same as the ones you have. Any cast two barrel 302 manifold from these years will work with no problem. Sounds like the timing is out, with the back firing and dieseling. How sure are you of the quality of the rebuild?
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Junior User
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From: Nashville USA
engine and manifold id
thanks again for the info, will try to locate more id numbers, as far as the rebuild, the guy used advance auto parts to do the rebuild march of 2001 there is a limited warranty, but you know how those work , tons of loopholes, and some of the installation issues are the installers responsibility, he gave me all the receipts. but it also looks like the warranty only applies to him. I've had it checked out a couple of places with ok results. a friend of mine who owns a shop with the only DYNO in middle tennessee looked at it today noticed a soft fuel line he said was a littl long and developing a kink or flat spot, said it could be causing to run a little lean and that could be contributing, he also suggested a points conversion and double checking the timing.
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Junior User
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From: Nashville USA
engine and manifold id
located an individual's (Woody's) fairline site last night which included 3 image files of tune-up spec documents for fairlanes, according to page 2, 1968 302 with 2bbl (same for 4bbl) plug type is btf-42, gap is .034, point gap is .021, and timing is 6, in my '65-86 chilton pick up manual, 1970 302 is plug type btf-31b, gap is .030, point gap is .021, and timing is 6b. Also the first year a 302 truck is indicated is '69, plug type btf-31, gap is .030, point gap is .017 and timing is 6. the fuel pump pressure and idle speeds even vary a little.