Engine identification Help
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New User
Joined: May 2008
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From: Reding, cT
Engine identification Help
I have a 77 F100 im rebuilding. Ive determined that i think its a 302 by measuring the deck width and checking the distributor mounting bolt height. the thing is when i removed the starter to get my casting number to figure out what generation ti is(i have reason to believe that the previuos owner might have swaped ina newer engine)and they're not there. the block is blank and there is no ridge jutting out either that would normally have the casting date. is there any other location on the block where i could find a casting number? could this be any other type of block?
Hotshot
Joined: Aug 2007
Posts: 12,183
Likes: 18
From: St. Charles, Missouri.
If the motor is origional check the valve covers. 302's have 6 bolts and 351 Modified's have 8 bolts. 351 Windsor's were not origional equipment for '77 trucks. If the motor has been changed from a 302 to a 351 Windsor, the valve covers will have 6 bolts same as the 302 so you'll have to check the firing order to ID the motor. The firing order is stamped on the centerdome in front of the carb. The 302 firing order is: 1 5 4 2 6 3 7 8, the Windsor has the same vlave covers but the firing order is different (1 3 7 2 6 5 4 8). There are other differences as well but this is the easiest way to ID them.
RCC
RCC
If the motor is original check the valve covers. 302's have 6 bolts and 351 Modified have 8 bolts. 351 Windsor's were not original equipment for '77 trucks. If the motor has been changed from a 302 to a 351 Windsor, the valve covers will have 6 bolts same as the 302 so you'll have to check the firing order to ID the motor. The firing order is stamped on the center dome in front of the carburetor. The 302 firing order is: 1 5 4 2 6 3 7 8, the Windsor has the same valve covers but the firing order is different (1 3 7 2 6 5 4 8). There are other differences as well but this is the easiest way to ID them.
RCC
RCC
Some examples of some Dent-side 302-V-8s (or so the seller from eBay claims are 302s) These pictures are from eBay auctions.
1973 F-100 Ranger,302,2 Barrel,C-4-Automatic,2WD,VIN:F10GLS12287.
1973 F-100,2WD,302,Automatic.(Below)
(all 4 pictures are of same truck,also from ebay) (IF you prefer links,as to your internet connection,just say so,I'll gladly edit them for links)
1977 F-100,2WD,302 V-8-154 HP,2 Barrel Carburetor,Automatic,VIN:F10GNY06072.
http://i422.photobucket.com/albums/p.../654-1-1-1.jpg
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From: Reding, cT
ok ive determined it is a 302, but does anyone know why or know of a reason why the casting numbers are not where they should be? and is there another place where i can find them besides the lifter Vally simply because the engine is in the truck and im not gonna disassemble the engine, yet. thanks
More Turbo
Joined: Aug 2007
Posts: 555
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From: Washington state
ok ive determined it is a 302, but does anyone know why or know of a reason why the casting numbers are not where they should be? and is there another place where i can find them besides the lifter Vally simply because the engine is in the truck and im not gonna disassemble the engine, yet. thanks
Might try getting undernieth and seeing if the block has some block codes on it there.
Not saying you'll find it here, but on my 460 I found my D1VE-AB code on the underside of the block right above the starter.
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From: Reding, cT
yea thats where they're supposed to be but it weird, the block is blank, and it hasn't been ground off because it has that rough block texture right down to bare metal and there is no evidence of there every being a ridge there. could this be a special block for special application?
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Elder User
Joined: Jan 2009
Posts: 741
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From: Western N.C.
It could be a whole factory replacement crate engine or long block. Sometimes those blocks have been known to be devoid of any ID numbers.
I don't know if it is true or not, but I've heard of some new blocks intentionally being made that way so original #s could be stamped on by the owner somehow. I suppose that this way you could still have a "numbers matching" vehicle even if you threw a rod through the original block.
Again, don't know if it is true, but it's a rumor I've heard several times.
I don't know if it is true or not, but I've heard of some new blocks intentionally being made that way so original #s could be stamped on by the owner somehow. I suppose that this way you could still have a "numbers matching" vehicle even if you threw a rod through the original block.
Again, don't know if it is true, but it's a rumor I've heard several times.
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