Researching 396 Factory Bolt finishes?

[Rick B.]

I have been doing lots researching for what bolt headmark/finishes were observed from the factory before paint for 65 396's. After reviewing both the archives and the JM it is not clear there is consistent pov's (if even mentioned) for some of the items below. Added complexity is when comparing 65 to 66, 67.


Would love to get the 396 experts to way in and confirm what they have seen on original 396's.

Below is the start of a list of what I am hoping to get some clarity on.... appreciate any assistance.

Intake manifold bolts

Exhaust manifold bolts

Thermostat short bolt

Alternator bracket to head bolt

Front Bumper Brace to crossmember bolts

Rear exhaust hanger bolts


much thanks for those responding

[Bill W.]

Re: Researching 396 Factory Bolt finishes?

I have all the 396 info except the rear exhaust . I will look them up and send them to you.

[Joel T.]

Re: Researching 396 Factory Bolt finishes?

I have all the 396 info except the rear exhaust . I will look them up and send them to you.

Bill;

Any chance you could post the information here? I would also like to get this information as well. I have my 396 off the road to clean up some point deductions, and getting some bolt issues corrected is on my list.

Thanks,
Joel

[Rick B.]

Re: Researching 396 Factory Bolt finishes?

Bill, thanks for responding, I sent you an email.

Look forward to hearing/seeing what you found.

Rick

[Patrick H.]

Re: Researching 396 Factory Bolt finishes?

If you don't have this book, consider buying it:

http://www.amazon.com/Corvette-Resto.../dp/0933534302

http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=130571470261

The photos alone are probably worthwhile in your case.

[Bill W.]

Re: Researching 396 Factory Bolt finishes?

Rick all this info is from engine #16120. Intake bolts are black with NO sign of silver paint (intake also had no silver overspray) but did have light orange overspray. head marking is grade 5 (3 lines) with a small circle and an A .and is not recessed .It also has a thick built in washer 1/8 inch.
Exhaust bolts are black grade 8(6lines) with a A inside a small circle . these had a 1/8 flat washer .
Thermostate housing bolts long "CP"grade 8 (6 lines)with no circle.silver plated ....Short bolt grade 8 (6 lines) cad plated. looks like a W or M (pitted) "manual says bolts are black"???
Alt bolts are hard to read but seem to be grade 5 cad bolts with a A in the center.
Dist hold down bolt black with grade 5 and a R S C between the lines . (
manual says sbc /tr)
Coil brkt bolts Cad plated with a recessed head and a center "dimple and a small E next to the dimple.
Remember this is serial # 16120.hope this helps..Bill