1958 Borg warner 4 speed C1

[Dan P.]

Could any one tell me if these dates are to early for car #406 built October 29 1957. Tail is date 6/7/57 and main case is 5/20 .Would that pass judgeing.I do not have the assembly date.Thanks

[Loren L.]

Re: 1958 Borg warner 4 speed C1

A local Dr has a '58(#3XXX) that he has owned since 1962; he finally restored the car 5 years ago; cast iron main case, T10-7 aluminum extension with the "SPAC" label, a sidecover with no buttressing and an assembly in the second week of June 1957 - no question about it being the one for the car

[Mike M.]

Re: 1958 Borg warner 4 speed C1

dan: tranny dates appropriate for the vette. i see no problems for it in judging.mike

[Dan P.]

Re: 1958 Borg warner 4 speed C1

when did they start the t/107A tailhousing thanks for the reply

[John H.]

Re: 1958 Borg warner 4 speed C1

when did they start the t/107A tailhousing thanks for the reply

Dan -

The T10-7A tailhousing started in 1958 (and continued though 1959).

[Dan P.]

Re: 1958 Borg warner 4 speed C1

I have seen the 7A on 10/18/57 do you know of any ealier

[Loren L.]

Re: 1958 Borg warner 4 speed C1

Digging into a 25-year old folder, I found 3 photos of 7A tailshafts made in Oct 57. Wayne Loron article two centuries ago presented a "guestimate" that the 7A was for 1958 production, based on ????
As Always, and even more so here, BW would have USED UP T10-7 extensions before allowing the "7A"s anywhere near the line.
Based on the Iowa doctor's car of #3XXX, I would expect early Corvettes to have a T10-7 extension.

[Loren L.]

Re: 1958 Borg warner 4 speed C1

I should have added that all 3 photos of the 7A tailshafts also showed the mystery code "SPAC" = special performance aluminum carrier?

[Donald S.]

Re: 1958 Borg warner 4 speed C1

I checked my files for a picture...seems like you guys know your stuff!

Don