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-   -   Black engine color? (https://67-72chevytrucks.com/vboard/showthread.php?t=601702)

BIGDOGTRUCKER 10-25-2013 02:10 PM
Black engine color?
 
My "70 C10 has the correct engine I checked the suffix codes.Engine is black and looks to be untouched?Did they ever paint them this color or were they all orange?

'68OrangeSunshine 10-25-2013 03:27 PM
Re: Black engine color?
 
Pretty sure they were all Chevy Engine Orange in '70 [even L6s]. Black paint could indicate a rebuild. Rebuilder did not mill off engine dress codes. Some do and some rebuilders even stamp over their own numbers there.
Other possibility is that some PO repainted the truck and decided he wanted the engine to get a fresh coat of black. Can't know that w/o pulling the head(s) and mic-ing the bores.

BIGDOGTRUCKER 10-25-2013 05:11 PM
Re: Black engine color?
 
Quote:
Originally Posted by '68OrangeSunshine (Post 6332506)
Pretty sure they were all Chevy Engine Orange in '70 [even L6s]. Black paint could indicate a rebuild. Rebuilder did not mill off engine dress codes. Some do and some rebuilders even stamp over their own numbers there.
Other possibility is that some PO repainted the truck and decided he wanted the engine to get a fresh coat of black. Can't know that w/o pulling the head(s) and mic-ing the bores.
Truck has original paint,only a few owners.I'm thinking maybe a rebuild at one point on the original engine.

geezer#99 10-25-2013 05:28 PM
Re: Black engine color?
 
What is the suffix code and casting number?

BIGDOGTRUCKER 10-25-2013 06:00 PM
Re: Black engine color?
 
Quote:
Originally Posted by geezer#99 (Post 6332657)
What is the suffix code and casting number?
Suffix is TAX,i'd have to check on the casting numbers again.

geezer#99 10-25-2013 06:52 PM
Re: Black engine color?
 
I found TAX is a 72 350 4 bolt c10 m/t.
THe only black painted ones I remember were the targetmaster rebuilts from gm. Built in Mexico.

Steve Hafner 10-26-2013 05:19 AM
Re: Black engine color?
 
2 Attachment(s)
. . . .

According to the chart below, the TAX code was used on 70 and 72 engines.

The valve cover TAX sticker was still on that 70 with 80 miles on it that was for sale a few years ago.

My 70's original engine has the TAX code stamped on the block's pad.

. . . .

Daner 10-27-2013 02:44 PM
Re: Black engine color?
 
Black will help with heat dissipation.

'68OrangeSunshine 10-28-2013 02:22 AM
Re: Black engine color?
 
One more possibility -- your engine was painted on a Friday afternoon, and the paint crew [ after a couple of pitchers at lunch] -- ran out of Chevy Engine Orange, so they sprayed the whole frame and engine in Low Gloss Black until some body got back with the correct Orange paint. They could not stop the production line for anything but a safety issue. Just a theory, of course.

bruceman1968 10-28-2013 06:08 AM
Re: Black engine color?
 
Quote:
Originally Posted by BIGDOGTRUCKER (Post 6332377)
My "70 C10 has the correct engine I checked the suffix codes.Engine is black and looks to be untouched?Did they ever paint them this color or were they all orange?
They were all orange (1970 SB). The engines were painted at the engine assembly plant, then shipped to the vehicle assembly plant. If there's no orange on the motor anywhere then it was most likely hot tanked and repainted during a rebuild. If the block was decked, the machinist either left the engine ID code intact, or re stamped it. Any chance of a pic of the engine ID stamp?

Keith Seymore 10-28-2013 06:33 AM
Re: Black engine color?
 
Quote:
Originally Posted by '68OrangeSunshine (Post 6336179)
One more possibility -- your engine was painted on a Friday afternoon, and the paint crew [ after a couple of pitchers at lunch] -- ran out of Chevy Engine Orange, so they sprayed the whole frame and engine in Low Gloss Black until some body got back with the correct Orange paint. They could not stop the production line for anything but a safety issue. Just a theory, of course.
No.

Quote:
Originally Posted by bruceman1968 (Post 6336236)
They were all orange (1970 SB). The engines were painted at the engine assembly plant, then shipped to the vehicle assembly plant. If there's no orange on the motor anywhere then it was most likely hot tanked and repainted during a rebuild. If the block was decked, the machinist either left the engine ID code intact, or re stamped it. Any chance of a pic of the engine ID stamp?
Yes.

K

MARKDTN 10-28-2013 07:40 AM
Re: Black engine color?
 
Factory black engine paint started in the '80s.

'68OrangeSunshine 10-28-2013 02:09 PM
Re: Black engine color?
 
Quote:
Originally Posted by Keith Seymore (Post 6336247)
No.



Yes.

K
OK, Kieth. You were there, maybe not then, but close enough to the source that your say has weight. I respect that. My theory is officially shot down.
:devil:

Keith Seymore 10-28-2013 03:08 PM
Re: Black engine color?
 
Quote:
Originally Posted by '68OrangeSunshine (Post 6336794)
OK, Kieth. You were there, maybe not then, but close enough to the source that your say has weight. I respect that. My theory is officially shot down.
Lol.

I tried a couple different posts to make sure it didn't sound too harsh...

K

Tinkermc 10-28-2013 08:14 PM
Re: Black engine color?
 
Only black engines I know of are GM target engines.


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