Bought 70 L78 Nova w/ following codes sight unseen - Page 2

70ChevyGuy · #1 11-17-2009, 08:32 AM

M-bird: With a 3:31 rear end and this tranny I'm a bit perplexed. Both DO in fact seem to be mostly found on L34's with some who claim that they were special ordered on very few L78's. The the engine matches on an extremely thorough restoration. Would seem odd to waste an L78 and such a extensive restoration using an incorrect tranny and rear end; especially on a forest green nova. Similarly if you were to scuff and stamp an L78; why do it on a Green Nova with an incorrect ass end? Open to thoughts in this regard, gents.

70ChevyGuy · #2 11-17-2009, 10:49 PM

6K tach mathces the one in this example (this site has the right image incidentally but the wrong redline figure). Bottom L78 tach is actually a 6K redline but they do look is deceiving)

Single fuel line.

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

So I agree, looks L34 from bell housing back. Hard to convince myself someone would order it for high end and not stoplights.

www.chevynova.org/NovaTachs.html

70ChevyGuy · #3 11-19-2009, 03:13 AM

What is A.I.R stamping on manifolds?

70ChevyGuy · #4 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** · #5 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.

**Mr70** · #6 11-17-2009, 02:18 AM

Welcome
Double check your TH400 suffix,as they were unique to the L-78's.
Is your cars CON VIN# stamped into the drivers side horizontal pan rail?
Although the one your showing now with a March 26th assembly date is possible for your cars timeline,the CF suffix was used in LS-3 402/330HP & L-34 402/350HP engines...get the serial # off the al.tag too..
CW was the highshift point TH400 for your car.
Is your #854 block a 4 bolt main also?
Are your Ex.Manifolds tapped for A.I.R?
Curious what your SS wheel assembly dates are,as they were an extra option on the Nova and not automatically included with the Super Sport packg.