transmission identification

[troy.70R/T]

I have an auto trans out of a 66 Coronet with a polyhead 318. Is this a small block 727? If so what engins and years will it work with. thanks

[John_Kunkel]

The poly shares the bellhousing bolt pattern with the LA small block engines (273, 318, 340, 360), in some years one bolt hole is different.

[troy.70R/T]

Thanks John. I will do some more reasearch. I want to sell the trans but dont want to miss lead anyone.

[troy.70R/T]

ok well I have been looking but I cant find anywhere where it will tell me what years that the bolt patterns my be different. I even found one place where is said that some early Polyheads had a different bolt pattern. My trans came out of a 66 coronet so that was the last year for the Polyhead right? How sought after is the transmission that I have? From what I read small block 727's are desired but not sure if I have the right bolt pattern to fit the 340's and 360's

[John_Kunkel]

A 727 from a '66 poly will fit a 340 or 360.

'66 is the last year of the 19-spline input shaft which makes them less desirable (worth less) than the '67 and later.

[troy.70R/T]

Thanks  John.