413 help

[kenkarner]

I am about to start putting together a 413. I have flat top pistons for a 60's 413 to replace the dished pistons. Now have a set of small chamber heads with the bigger valves. What type of compression should I expect? Best cam to run? the crank is steel with larger bolt holes than the 440's. what problems will I find trying to hook up a flex-plate? Any and all suggestions will be helpful. It is going in a 48 special deluxe businessmans coupe. to be driven just for fun thanks Ken

[NC PUTZER]

SOUNDS LIKE A REAL FUN PROJECT TO ME>>>>>>>

I WILL ASK DAN THE MOPAR MAN TO POST AN ANSWER TO YOUR REQUEST . HE WILL BE IN CONTACT WITH ME TODAY.>>>>

I AM ALSO CHANGING THE ENGINE IN A 1947 CHRYSLER NEW YORKER, CLUB COUPE.. THE COMPLETE DRIVE TRAIN WILL BE UPDATED TO 44O + 727>>>>>>RESTORATION IS IN PROGRESS WITH THE BODY REMOVED, 440 + 727 PLACED ON THE FRAME RAILS AND RUNNING GREAT.

YOU MAY BE ABLE TO HELP ME IN LOOKING FOR ANYONE WHO HAS CONVERTED ANY 8 CYL. CHRYSLER FROM DRUM TO DISC BRAKES USING THE ORIGINAL SPINDLES>>>>>>

ALSO, I AM LOOKING FOR A CENTER DUMP EXHAUST MANIFOLD, WITH CASTING NO. 2205536. THIS MANIFOLD HAS THE EXHAUST FLANGE EXACTLY IN THE MIDDLE, NOT AT THE REAR.

[kenkarner]

I am using a s-10 sub-frame on mine to get disc set up. Sorry cant help with the manifold, ever thought about shortis headers?

[b-1ken]

Sounds like you have a pre 1962 engine. That crankshaft will not work with a 727 torqueflite. A later crank ('62 or newer 413, 426 or 440) will fit and I recommend you get one. I used to build 426"s (1/16" overbore) out of 413's and they work fine except the cylinder walls are not real thick and cracks were not uncommon (in a race engine). '68 or newer 383, 400, or 440 heads would work fine. If you're running on the street, I don't think a compression ratio of higher than 9.5 is wise (9.0 is safer).

[dirty dan]

[QUOTE]Originally posted by b-1ken
[B]Sounds like you have a pre 1962 engine. That crankshaft will not work with a 727 torqueflite. A later crank ('62 or newer 413, 426 or 440) will fit and I recommend you get one. I used to build 426"s (1/16" overbore) out of 413's and they work fine except the cylinder walls are not real thick and cracks were not uncommon (in a race engine). '68 or newer 383, 400, or 440 heads would work fine. QUOTE]
I agree with b-1 ken
As I have a 62 413 with standard dimention holes.
If your engine has dish pistons in it ,then some one has already been there and done that.
I would also swap out those heads for some 452`s or something close to that in performance.
As those older heads had an alumanume rocker shaft pedistale.
This is a weak design in my opinion .
Because it puts a lot of stess on the longer rocker arm bolts ,that are required.
As for compresstion.
It would depend on the use of the engine,as to how much is needed.
Don`t get discoraged ,you still will have a solid setup to sart with.
It only requires some updateing thats all..

[6 packin]

Dan has a good point. The heads to my knowledge are inferior as to flow also. The 452's would be a way better head. Also the cranks are identical to the RB 440 and all of them are steel so use a neutral converter.