Anyone know if there are any significant differences between the case of a 727 and a 518? Was there ever a 518 with a big block bellhousing pattern? Just wondering if the guts and O/D from a Diesel 518 could be put in/on a big block 727 to put an O/D ****** behind a 440.
I'm not totally sure but I dont think that the 518 came in a BB pattern. I have been known to be worng once or twice before though. So maybe one of the gurus can help a little more then my "i dont think so" comment.
you can't make an OD out of a 727. The auto in the '57 Chrysler was close to being a 727 with an od. Close but no cigar. Don't know what you're dropping the big wedge in but if you want to cruise at lower RPMs with a B/RB you just put a taller gear in it. Trust me unless its in some big ol boat the taller gear isn't going to hurt your hole shot a bit.
As I understand it and in my reading up on the subject..the A500 is roughly the 904 with OD...the A518 is the 727 with OD and as for big block availability..long gone before the introduction of the OD auto ******..shame as I have a 383 I would love to have the A518 connected to also. I cannot comment on the diesel application...sorry.
Exactly....that's what has me wondering about swapping these parts around. I have an A-108 Camper with a 318 that I think would make a good home for a 440 I am picking up this week. If I don't find a home for it, it will likely end up in Swamp Thing and I will likely end up DEAD.
for waht it's worth I read about a company in Canada that has a kit to adapt early 60's push ****on setups to a A518 ******. which means there must be a way to put a A518 in an early 60 mopar with a push****on 727 which were mostly BB cars. I was planning on putting a A518 in the chevy after a while with the push ****on. I know it's not a direct answer, but it seams that there is a way. I'll try to dig up that companys info and call them today.
found this on car craft web page. It looks like it's possibel Mopar crossmember swap applications are basically limited to A518 four-speed automatic applications. We know of one 1970 Challenger with a Dodge Ram A518 overdrive trans that uses a modified version of the car’s original 727 TorqueFlite crossmember. The A518 is only slightly longer than a 727. Further info on this car can be found in the May 1996 and Sept. 1995 issues of CC. We also know of a B-body, 440-powered 1970 GTX with an A518. Owned by Super Street staffer Karl Brauer (yes, Karl does in fact own a real car), the A518 is supported by a custom-fabbed crossmember that uses the original’s end pieces. The scoop on this car can be found in the Apr. 1996 issue of Hot Rod. Yes, folks, them boys upstairs actually did a story on Mopars once--imagine that! Besides these two cars, the Mopar overdrive-trans-conversion learning curve is still in the infancy stages.
Here's some links I collected: http://www.hotrod.com/howto/43323/ http://www.moparaction.com/Tech/questions/OVERDRIVE.html
I think that canadian company is/was "fireball". I tried to call 'em & got no answer. My notes from back then: Fireball Performance Automatics Inc. (converts overdrive torqueflights to push****on operation) Williamsburg, Ontario, Canada Tel: 613-535-2112
Trying to avoid the $500 adaptor route. I have a BB 727 and have access to a 518. I guess it's time to just tear them apart and find out what fits.
No. The cases are different. The OD is in the tailhousing and the case was changed to make up for the added girth of the OD section. There is also two 518's - a lockup converter and a non-lockup. A lot of the internal parts will change over however.
Street Rodder Magazine (can I say that here?) did an article a few years ago. I might be able to scan photocopies for you, pm me your email addy. The trans internals are the same, the cases are different, the OD is the tail housing on the 500 and 518.
Go to www.moparts.com and check on the Question and Answer page. You will probably have to log on to post a question, but you will get a straight answer there from those that know. Gene
I have an a518 in my truck, I dont think that they're rated for much more the 400-450 lb-ft of torque. So be careful with it. Also get the lockup model if you can, it reduces the rpms signifigantly. Gary
The Jalopy Journal
