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I know the big block auto for Mopars is the 727, I pulled the 318 out of my Dart and it has a 727, but the 318, although the wide block, is still a small block right? So will this 727 work with a big block or is it really like a 904 but just called a 727 cause the bolt pattern would be different, or is the 318 wide block a big block, and made as a small block after 64? I know the main difference between the 318 wide and a post 64 318 is that the early ones had heads designed in the hemi style, while the post 64 heads were of the wedge design. I want to keep the push button set-up, but I want to build a big block for the car, if I have to go to a big 727 then I will just build a small block for it, so I can keep the push button tranny.

2006-08-26 19:10:21 · 5 answers · asked by Anonymous in Cars & Transportation Maintenance & Repairs

Ok, there is some info I needed, and some info that makes no sence. The second answerer must be old cause he was talking about CID, I know they made 225, 273, 318, 331, 340, 360, 400, 413, 426, 426 hemi, 440 and about 2 dozen other displacments, so I know he doesn't know whats going on. And, as for the rest, the 727 was an all aluminum casing, and has no removable bellhousing, so thats out the question, I know it is a 727, but I will have to agree with the first answerer that said they made both big and small block 727's, before the 904 came out. Anyway, thanks for the answers, I got a little out of each, and 10 points to the first answerer....

2006-08-27 17:52:09 · update #1

5 answers

Mopar made two types of 727 toque-flight transmissions one for small block bolt patterns and one big block bolt patterns, your answer is No you can't put your 727 on a big block!

2006-08-26 19:29:33 · answer #1 · answered by dlk426 3 · 0 0

I would expect that to be a 904. The way to tell for sure is to look at the spot where the dipstick connects to the transmission. If there's a little buldge there, you have a 727. If the oil pan rail runs straight, you've got a 904.

If you do have a 727, it's probably for a taxi application. This might be a big block 727 with an adapter, in which case you can bolt it to a big block with no trouble. If the bellhousing is one piece, it will not bolt to a big block at all.

2006-08-27 05:22:23 · answer #2 · answered by Mad Scientist Matt 5 · 0 0

First off, a 727 will never be a 905. The internals of the 727 are bigger & stronger then any 904. Clutch drums, planetays are all beefier to handle the big engines. There was a Hemi version of the 727 which had more clutches and a bigger (wider) band.
If your 727 came from a V8, then it will be OK to use on another V8, if the bolt pattern on the bell housing matches. You may want to consider getting a higher stall torque converter and getting a shift kit installed. Shift kits come available in different levels based on what you want, from shift improver kits to race kits with manual shift valvebody!!!!

2006-08-27 01:33:58 · answer #3 · answered by trannyman166 3 · 0 0

i'm from that era and i have never heard of such numbers ther was a slant six 225 ci a 318 ci a360 ci a383 ci and a 440 big block the 383 and the 440 could come with a stagered twin four barrals good luck in nineteen 66 or 67 the dodge super bee came out had a 383 and to change the plugs you had to remove the motor no room to get your hands between the motor and the fender well as i remember cadillac had a 500 +ci thats the biggest ive seen

2006-08-26 20:10:38 · answer #4 · answered by dalecollins64 4 · 0 0

It all depends on if the bell housing is married or bolted on to the transmission. It it is married, then you will have to find another transmission. If it bolts on, then you will have to find another bell housing. The Y blocks were a real tough torquey motor. Powerful and very dependable. They were used in industrial applications and in motor-homes well past the time they were no longer used in cars and pick-ups.

2006-08-26 20:13:43 · answer #5 · answered by Thomas S 3 · 0 0

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