Bought 70 L78 Nova w/ following codes sight unseen - Page 3

**Mr70** · #21 11-17-2009, 11:13 PM

"Rear axle same week as trim tag (was told this is not uncommon on fisher tags from Willow Run) CBS 04 15 G 2 Carrier number 3968341"

That's the assembly date the rear was set up,not the casting date of the housing.
Look around the 2/4 & 8/10 O'clock areas on the pumpkin to axle webbing for a cast date.
I'm just curious to know the difference between the two.

Allen · #22 11-18-2009, 02:57 AM

I've since learned that a 70-only L78 tach looks like this.

70ChevyGuy · #23 11-18-2009, 03:17 AM

I thought they went to this tach in december. I have seen several other 6K tachs like mine in other 70 L78's cars (online and in person).

Allen · #24 11-18-2009, 03:49 AM

[ QUOTE ]
I thought they went to this tach in december. I have seen several other 6K tachs like mine in other 70 L78's cars (online and in person).

[/ QUOTE ]

That could be that it was a running change. There were several changes introduced in the middle of the '70 production around Dec 69 / Jan 70.

Nova Research Project · #25 11-18-2009, 06:08 AM

[ QUOTE ]
I thought they went to this tach in december. I have seen several other 6K tachs like mine in other 70 L78's cars (online and in person).

[/ QUOTE ]

I have seen this same tach in an original September 69 L78 Nova. Which goes against what I thought before. I am trying to nail this down for the tach page.

What was this style from?

Click here to see the other tachs

Greg

Allen · #26 11-18-2009, 06:11 AM

[ QUOTE ]
[ QUOTE ]
I thought they went to this tach in december. I have seen several other 6K tachs like mine in other 70 L78's cars (online and in person).

[/ QUOTE ]

I have seen this same tach in an original September 69 L78 Nova.

Greg

[/ QUOTE ]

Greg,
You might consider adding that tach picture that I posted to your page also. I thought it was '70 only. The other L78 tach picture that I have on your website came from a '69 and I believe might have been available for '68 also.

Nova Research Project · #27 11-18-2009, 06:23 AM

Thanks, Ok, I had that the one posted was 1970 so the helps. See above.

Greg

70ChevyGuy · #28 11-19-2009, 03:13 AM

What is A.I.R stamping on manifolds?

70ChevyGuy · #29 11-19-2009, 03:29 AM

Have had some PM's and various questions: No power steering, 6K tach (as mentioned) Block casting and stamps all verified and correct, yes 4 bolt main. Extremely clean and original down to wiring harnessing and rubber under the hood. FYI...looking forwared to FIRST hand info once i get the car in person. Thanks for ALL your help.

**Mr70** · #30 11-19-2009, 04:10 AM

A.I.R. is the Air Injection Reactor system,meaning drilled for smog tubes.
All solid lifter engines received them in 1970.Hyrdaulic lifters did not.