exact bore & stroke for 360 FE
#2
11-13-2002, 12:39 PM
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exact bore & stroke for 360 FE
anyone know the exact measurement for a 360?. trying to determine which engine i have in my 67 ranger. it's not the original for sure, so i need to know for sure. here's my b&s.... bore=4.125, stroke=3.75
closest one i see on any chart is the 390 or 406. cant find the specs on the 360 though...
thanx, roger:-X12
closest one i see on any chart is the 390 or 406. cant find the specs on the 360 though...
thanx, roger:-X12
#3
11-13-2002, 12:50 PM
exact bore & stroke for 360 FE
360= 4.05 bore x 3.5" stroke
390= 4.05 bore x 3.784" stroke
406= 4.13 bore x 3.784" stroke
400 chev = 4.125 bore x 3.75" stroke
Sometimes people will use 400 chev pistons in a very over bored 390. I'm betting your rods are custom too. How presice were your measurements. If its a 406 it will most likely have crossbolts.
390= 4.05 bore x 3.784" stroke
406= 4.13 bore x 3.784" stroke
400 chev = 4.125 bore x 3.75" stroke
Sometimes people will use 400 chev pistons in a very over bored 390. I'm betting your rods are custom too. How presice were your measurements. If its a 406 it will most likely have crossbolts.
#4
11-13-2002, 07:13 PM
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exact bore & stroke for 360 FE
>360= 4.05 bore x 3.5" stroke
>390= 4.05 bore x 3.784" stroke
>406= 4.13 bore x 3.784" stroke
>400 chev = 4.125 bore x 3.75" stroke
>
>Sometimes people will use 400 chev pistons in a very over
>bored 390. I'm betting your rods are custom too. How
>presice were your measurements. If its a 406 it will most
>likely have crossbolts.
i measured w/standard stanley tape measurer as exact as i could and that's what i came up with on more than one cylinder. i know a micrometer would be best, but i dont have one. what vehicle came with a 406? and what crossbolts are you referring to? where would they be located? this engine looks to be stock (for about 30 yrs!) full of mud & crud. got a busted exh valve to take care of...
thanx, roger
>390= 4.05 bore x 3.784" stroke
>406= 4.13 bore x 3.784" stroke
>400 chev = 4.125 bore x 3.75" stroke
>
>Sometimes people will use 400 chev pistons in a very over
>bored 390. I'm betting your rods are custom too. How
>presice were your measurements. If its a 406 it will most
>likely have crossbolts.
i measured w/standard stanley tape measurer as exact as i could and that's what i came up with on more than one cylinder. i know a micrometer would be best, but i dont have one. what vehicle came with a 406? and what crossbolts are you referring to? where would they be located? this engine looks to be stock (for about 30 yrs!) full of mud & crud. got a busted exh valve to take care of...
thanx, roger
#5
11-14-2002, 11:28 AM
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exact bore & stroke for 360 FE
>i measured w/standard stanley tape measurer as exact as i
>could and that's what i came up with on more than one
>cylinder. i know a micrometer would be best, but i dont have
>one. what vehicle came with a 406? and what crossbolts are
>you referring to? where would they be located? this engine
>looks to be stock (for about 30 yrs!) full of mud & crud.
>got a busted exh valve to take care of...
>thanx, roger
99.9% it ain't a 406, which was a rare race-type motor installed only in very few CARS in the early 1960's. Crossbolting is a way to strengthen the mains that hold the crank. You've probably got a bored out 360 or 390 block with 390 rods. Do the pistons have any markings on the tops?
>could and that's what i came up with on more than one
>cylinder. i know a micrometer would be best, but i dont have
>one. what vehicle came with a 406? and what crossbolts are
>you referring to? where would they be located? this engine
>looks to be stock (for about 30 yrs!) full of mud & crud.
>got a busted exh valve to take care of...
>thanx, roger
99.9% it ain't a 406, which was a rare race-type motor installed only in very few CARS in the early 1960's. Crossbolting is a way to strengthen the mains that hold the crank. You've probably got a bored out 360 or 390 block with 390 rods. Do the pistons have any markings on the tops?
#6
11-15-2002, 10:25 AM
exact bore & stroke for 360 FE
>You've probably got a bored out 360 or 390 block with
>390 rods.
He has a 390. Rods don't affect stroke, and he measured the stroke at 3.75. That means that he must have a 390 crankshaft.
The stock bore was 4.05", but most of the 390's I come across have already been bored .060 over (to 4.11). That's pretty close to the 4 1/8 that he measured with the tape. Some 390s will go .080 over. I got $20 says he has a .060 or .080 over 390.
>390 rods.
He has a 390. Rods don't affect stroke, and he measured the stroke at 3.75. That means that he must have a 390 crankshaft.
The stock bore was 4.05", but most of the 390's I come across have already been bored .060 over (to 4.11). That's pretty close to the 4 1/8 that he measured with the tape. Some 390s will go .080 over. I got $20 says he has a .060 or .080 over 390.
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