wondering about mopar '75 slant 6

The short block is the same as the hemi, except for pistons. All the bearings, ect are the same so no real parts shortages there. Also most of the update tricks for the Hemi works on the Poly, so check out the Hemi Tech Index. Places like Rock Auto & Kanter's should have all the stuff you need for the top end. Change the axle to a more agreeable ratio & go!

 

Don't go to a swap hoping to find a rearend, go to a junkyard, or better yet a you-pick yard if you have any nearby. Second-Gen Camaros aren't that common here but I managed to find a complete decent rear in one for my '50 Chevy. Something like a Dodge Dakota should be a dime a dozen.

 

Bewreen gas and food? Choose gas. Lot more fun cruising your cool ride on a few bucks of gas then what fun you will get from a burger and fries.
I never understood why hot rodders who drive their cool rides maybe about 10 to 15 % of the time would ever worry about fuel costs. Tis about like worrying that your Gal with the long shapely legs' lipstick costs too much. Some things are worth putting up with.
Have you ever considered putting hemi heads in your 270 poly?
I have a slant six as you can see to the right. great motor but wont bolt up. Crank is different for the slant six and shortly after all V8s. Different torque converter design and different flywheel. Also no V8 bellhousing will fit a slant six. you would need the engine bell and trans ***embly.

 

Interesting...what about the truck bellhousing used in the early 60s? It sure looks like it fits both....I guess I'll find out, I get to do a couple engine transplants on some sweptline trucks. One with a 6 and one with a 318.

Not that this has anything to do with the early poly engine, of course.

 

You are correct Jim. I had one of 'those' back in the early 70's with dual pattern.
...and of course this is off topic but not well known.

.

 

Dolmetsch knows the slants and he is right about the gas vs. food -- the slant is a torqqqqqq monster for the size but the trade off for the 100 hp and the 1bbl carb does not work out for the best fuel economy - 50 dodge and 73 rr and both correct for the easy change over to the newer small block v8 and v6 - but it all come down to its your ride and you know what you want the truck to do and how much you have to spend - so do what you think is best for you and you will be happy - ja**

 

I had a Duster with a slant six and it could barely get out of its own way. That was the first year for the smogged up version and I believe a significant horsepower reduction. Also it ate up valves pretty bad. Just saying. I have had older slant sixes that ran great and were plenty peppy for driving but my 75 was almost so slow as to be dangerous.

 

here's that Dodge truck slant 6/small block V8 bellhousing. Hydraulic clutch on p*** side. There were a few different versions used in the 60s, this is from a 66 truck with the V8. They use a deep flywheel that clears the bellhousing, and you have to remove the bell with the engine, can't leave it in the truck...unless you remove the transmission, clutch, and flywheel first.

.

 

there.. is more than one way to skin a cat.

they made a hemi 6 for the jeeps... .. that may work.

 

Dodge changed the way there 3 speeds shifted around 1960 there's no way the early column will work on a late trans.

 

Hey sunbeam, how about a better pic of your avitar?

.

 

considered the swap for about .003 seconds then realized anytime you say hemi you might as well throw in a few extra hundred bucks as well. I'm not really interested in hot rodding it, more for it to be a solid dependable work truck. that's not to say if some speed parts fell into my lap I wouldn't do it but it's just not in the picture right now. maybe after the kids move out...

 

might have to look at that index..

 

I'd use a later 318. Lots around, cheap. Freshen up with a cheap overhaul kit and rebuilt heads.

I know they will interchange with any Chrysler A engine but the 270? Not sure, it was more of a Dodge hemi design.

In any case, they changed the way the crankshaft bolted to the flywheel in the early sixties.

Have you considered buying a Fifth Avenue from the eighties, swapping out the whole drive line and sending the body to the junk yard? It is usually possible to find one for not much more than s**** price and salvage everything you need at very low cost.

They got good mileage and usually were not driven hard.

 

The change in crank & bell was for '62 & up, he could bolt in a '61 & earlier Remi, hemi based Poly or "A" Poly. Or change engine & ****** to a post 61 A or LA.

 

If that "A-Body 3-speed" is what I think it is, it could be worth $400 in decent shape.

Sounds like an aluminum-cased A-833 OD... a musclecar 4-speed with 3rd gear replaced with an overdrive gear. Technically it's still a 4-speed, but folks describe it as a "3-speed overdrive" all the time. People like the cast-iron ones, but will readily buy an aluminum one, especially from an A-Body. That's the one folks want the most!

~Jason

 

http://www.jalopyjournal.com/forum/attachment.php?attachmentid=1683316&stc=1&d=1341532154 don't know if this is better but its a different angle 5th tube is for water it goes out the back radiator will be in the trunk.

 

ok so instead of the /6 -rebuild the poly and..

maybe?

63 Plymouth Fury rear end

http://portland.craigslist.org/clc/pts/3107368728.html

think i'd get better gearing/mileage? at least I wouldn't have the f%#@'n tapered axles/hubs...

 

Price ain't bad, gears should be better. Those were narrow cars, check what the width is -

 

That rear axle still has the tapered axle shafts, you can see the nut on the axle center in the picture. You need to get to at least a 45 but a 66 would for sure not have the tapered axles, unless something had already been changed. Gene

 

damn. wasn't sure. wishful thinking..

 

slant 6 is a great engine.Most 6s will get between 12-15 mpg.no better than a poly engine.keep the poly.kanter auto has parts.

 

Jeep 6cyl 230ci Tornado is tha answer to every thing.. it's unique.. it looks cool
and it's got alright mpg.