if you have a 428 crank i,ts externaly balanced you nead a 428 flywheel. a 428 cranked 390 is now a 410 a good balance shop can rebalance the 390 flyweel to 428 spects i hope this helps.......

Here's a couple of things you can look at externally to see if some of the CJ parts are there:

Intake manifold should have a casting # of C8OE-9425-G. This casting # will be right behind the carb base.

Next look between either the #2-3 or #6-7 spark plugs for a casting # which should be C8OE- N - especially look for that -N- ifyou're having a tough time seeing in that tight space. You might use a rag/solvent/carb cleaner to clean that area up to have a better look. Take a flash light too.

As for the block, you're right that a 390/428 look identical externally. There will be a 352 cast on the right front side deck - just below the head (the right being driver's side). Most late sixties 352/390/410/428's had this number cast there. Now if you can get under the Mach you might be able to find a casting # on the block but it will be difficult to see and a dirty little job. I don't have those #'s handy because, sadly, I don't have a CJ block around anymore.

There should be others jumping in to give you even more and likely better advice.

Scott, I looked in the Ford 70 shop manual for your answer. It says that all V8 engines (except 351) firing order is 1-5-4-2-6-3-7-8. And this firing order is also under the engine section for the 429 CID engine. So, that looks to be your firing order. I hope this helps.

n/m

why there are no bids...too much $. Whereas I would love to have a Texas rust free body..there are enough of them available in rust free states. I know there are two trucks, but basically you would be building one. You can get one ready to drive home for that money.

My friend bought a '69 F250 that runs and is in nice shape for $900...

Brent;

Just about all FE (and some FT) applications had "352" cast on the block. The story I got from an old auto industry retiree was that Ford created casting molds for 332 and 352 blocks. As the CID of the FE motors increased, the exterior dimension did not, and therefore the same exterior mold was used for the 352, 360, 361, 390, 391 and 410 cid engines, as well as some early 427 and 428 castings. Don't know how true this story is, but I have personally seen 352, 360, 390 and 410 engines with "352" cast on the block.

You may be able to find a partial VIN stamped on the back of the driver’s side of the engine block just below where the head meets the block. Also look for the casting dates on the block and heads. The date must be prior to the date your car was built for it to be original. It also should not be more then a month or two before the car was build. If you use the search button you will find that many people have asked this same question. You will also find the places you need to look for the numbers.

x

I've been there, so you have some choices, Sanderson makes short tubes, and as stated FPA's, Hooker and Crites. the latter two as is the FPA's are long tube but they hang lower than some like. Good luck!

sould be 390 GT heads with 14 exhaust bolt holes drilling.