the scant internet consensus is "marine". But military pops up also. No idea on the extra vacuum holes.
Hey Mark, there was an old thread on these several years back where the unofficial decision was that they were military or possibly marine. Apparently the M114 was 283 powered and utilized some aluminum components according to someone on the tri-five Chevy forum who posted a picture of one of their engines.
Here’s a military gm v8 The extra holes by the thermostat housing are for picking it up There’s a vacuum line coming from the intake runner. Or looks like it under the other lines.
M114 info. Engine diagram shows the ports in the intake not very good engine pic But the 2 holes next to the water neck and extra bosses behind the carb can be seen with stuff bolted to it
I bought two of these pumps years ago, they were also described as being from a military application. No snowflake so they weren’t cast by Winters, but can anyone shed any light on the origin? I’ve done some prep work for polishing, it showed having been sand cast. Two things in particular are different, the bypass hole on top is only 3/8-NPT and there are two 1/2-NPT (heater?) ports also. Bill Jenkins said it was military in one of his books. I just noticed another detail, the bypass hole to the No. 2 cylinder was blocked.
Rumors are Steve Mc Queen was in the Marine Core, assigned to a tank, tried to hot rod the motor and it blew up. Did you find that tank and are adding to your collection?
https://www.hotrod.com/news/the-m114-reconnaissance-the-camaro-of-tanks Anyone recognize the head casting symbol?
Same engine in the M116 husky, aluminum hull amphibious troop carrier. I had one back in the 80's missing lots of parts so I moved it on.
I can’t help with the head ID but the water pump in that picture has the same ribs as my aluminum pump verifying an original military application.
When I was a wee little lad in High School (class of '67) working at the Richfield station in town, there was a guy with a yellow chopped '32 5w with what was claimed to be an original '57 Vette 270HP motor. My Corvette buddy pointed out the twin towers on his heads and commented on how rare they were. I have seen little info on the internet to corroborate.
interesting and not all runners have them, only every other in firing order. must be to run multiple bells and whistles
Casting number on this is 3743056.....58' 283. * Edit: The 1959 parts book lists 3743056 as a 2 ton truck head.
I've had more than one swap meet seller insist that because this intake is aluminum, it just HAS to be from an early Corvette.
The Jalopy Journal
