marine 427

ogasman · #1 (**permalink**) 10-11-2003, 08:18 AM

Anyone out there have experience with running a marine block? I have a lead on two out of a 1968 Crisscraft. The blocks carry casting number c7ae, one set of heads is c7ae, the other engine has different heads as of 2 years ago. They have casting number c4ae. They have approx. 600 hours by the meter, and were running well when they were replaced by big block Chevy power about a month ago. They are cast as side oilers, but not drilled. Does anyone know if they can be drilled to sideoiler configuration? The boat was run in fresh water for aprox. the last 20 yrs, before that unknown.

FFR428 · #2 (**permalink**) 10-11-2003, 08:45 AM

Sure they can be drilled for sideoiler apps. The blocks were very good from what I hear. Really thick cyl walls and really HD for the marine application. Most shy away from these for the salt water corrodes the hell out of them so check all the water passages well for corrosion and blockage. G.

ogasman · #3 (**permalink**) 10-11-2003, 04:46 PM

I know the block could be drilled in theory, but has anybody seen one done? Who did the machine work, and what is a good price?

FFR428 · #4 (**permalink**) 10-12-2003, 11:07 AM

Are these the two that are for sale in CT?

ogasman · #5 (**permalink**) 10-12-2003, 12:16 PM

No, these are located in Oregon. The other question I have is about the one head casting number, it is c4aea 6090c. The only number close in my book is a high riser head. I doubt that is what it is.

FFR428 · #6 (**permalink**) 10-13-2003, 06:23 AM

Yea, only # close here is the HR. could be you never know! RE: the Steve Christ's book. The only other C4 number is for a 352/390 std head. I know the stock marine heads were the low riser. There is a pair of those for sale here in CT also being the reason I asked. See if you can pull the intake or exaust manifold and measure the port size. The pair here in CT have an asking price of $4k for both minus the marine stuff re: exausts. drive etc. As far as the C7AE casting # that comes up as a sideoiler block as the marine have a C6 or C7JE- B or A. So take a real good look at what you have there. They may indeed be a pair of sideoiler blocks. Ford would use whatever they had at times to fill orders as we know. check it out.G.

cobra427mnsi · #7 (**permalink**) 10-13-2003, 08:15 AM

Block casting # C7AE, also, comes up as a '67 352.

Ogasman, for your sake, I hope it is a side oiler. Check them out. You never know.

Paul

ogasman · #8 (**permalink**) 10-13-2003, 03:39 PM

The blocks have cross bolted mains, and have the bosses on the side of the block for the side oiler, but they are not drilled. Does anybody know if this would have any thicker cylinders than a standard side oiler block. The blocks are standard bore, with very few hours on the meter. They have a fresh water cooling system, and for at least the last 20 years have been in fresh water only.

Mark IV · #9 (**permalink**) 10-13-2003, 03:50 PM

....in mind that one of the pair is likely a reverse rotation motor and that to be used in the car will require modification. Or maybe not, how about 4 speed reverse and one forward?

Rick

John 550 · #10 (**permalink**) 10-13-2003, 05:30 PM

I am not a expert , If you are going to use it for a "427 sc replica" and not race it
don't worry to much about the drilling for more oil , don't worry
about the old heads , the edelbrocks are a good way to go .
As for the one counter rotating engine , the crank has a grove that
oils the rear seal . When run foward , the oil wants to go the
wrong way .It needs machine work or somthing .
(Ask George Anderson @ guessford or a FE builder )
Have fun

FFR428 · #11 (**permalink**) 10-13-2003, 05:55 PM

If these are still std bore with low hours closed cooling run in fresh water for a decent price grab em. The marine blocks are a very heavy duty block. Some say better than some street blocks. Keep in mind though the wear and tear on boat engine is like driving a car uphill all the time! These sound nice though and i've seen some really rough marine engines that people want top dollar for. They figure its a 427 and they can get sideoiler price for a crappy overbored corroded marine block! No way. G.

ogasman · #12 (**permalink**) 10-13-2003, 06:30 PM

I guess I will really get you guys going. I picked up a 427 SOHC in an estate sale about a month ago. Somewhere along its racing history it ate a valve in the number one cylinder. It did some cosmetic damage to the head. The block has been bored 30 over, but there are about 30 + small nicks in the cylinder. I know the motor was raced after this, and survived. I am debating what to do with the block, it is the origional cammer block, # 404 made. I hate to sleve it, and it would probably be alright for some time if I ran it like it is. That is why I am interested in the marine blocks.
Sorry guys, I think it is going to live in my 40 coupe, and not a Cobra.

John 550 · #13 (**permalink**) 10-13-2003, 08:49 PM

The marine block saw mostly fresh water I would get it .
I would also sleeve the cammer , life is short , play hard .

( Thanks for the heads KK up , I will be sure to proof read next time !)

KobraKarl · #14 (**permalink**) 10-13-2003, 09:25 PM

"life is shot" play hard....LOL that is my new motto,

KK

misfit41 · #15 (**permalink**) 10-15-2003, 10:40 AM

FFR428,
Do you have contact info on the ct marine engines,,these are amoung the best 427 blocks made,so says Jim Dove,,Tk

bomelia · #16 (**permalink**) 10-16-2003, 10:49 PM

Be careful. My book says a C7AE is a 352. You need a -A forit to be a 427. Other clues such as cross bolting and so on might be useful.

Mike

FFR428 · #17 (**permalink**) 10-17-2003, 05:21 PM

Misfit, There is someone looking at them Sat (tomorrow) if they don't take them or are "tire kickers" I'm next in the list. Would you be interested in one? Let me know as I can only use one but must purchase the pair. Glenn.

Doc_Naughty · #18 (**permalink**) 10-28-2003, 10:02 PM

Not wanting to throw a towel in the ring . . .

It should be mentioned that there were a few (about 1000) cross-drilled 390 Taxi and Police Interceptor engines produced by Ford about the time that the 406 and 427 were emerging on the scene. The 390 cross-drilled block was a center oiler, although the block casting had provisions for side-oiling, just never drilled at the plant.

Check the bore!!! is it 4.250" if not, and if it's 4.050, it's a 390, albeit very rare.

Doc



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