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I have a 1979 F-600. When I bought the truck I was told it had had a 460 swapped in to replace the stock 370. The valve covers say it is a 370. Without tearing the motor apart is there any easy way to ID which motor it is? I need to get a vacuum advance for the distributor.
Also what are the timing specs for a 79 460 and 370. I don't have any info for the 460 and the sticker is barely readable if it is a 370.
Considering it is considerably bigger than any small block I've ever seen including the old Chrysler 318 polysphere (wide blocks) I don't think it is a 351M or 400.
I also am certain it is not a FE.
There are 7 bolts holding the valve cover on.
No codes under the valve covers except for the standard mold numbers. The only thing unusual was a large M over a C within a C. I went over the sides of the heads with a mirror, It's a little hard to stand on the bumper and hang upside down to get a direct look at them, and there were no stamps on the side of the heads. If there were any on the ends they are behind the brackets.
For all I know they are not stock heads. The person who supposidly swapped motors has done some hotrodding in the past. He may have used a motor he had on hand with aftermarket heads.
I thought I posted this an hour ago. It must have gotten lost in the e-mail.
The motor is actually a 370. The original owner had a 460 that he was going to swap in but didn't. What I got from the person I bought the truck from was that it had been swapped.
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