Has anyone successfully transplanted a Detroit diesel in their 1940-46 truck? I was thinking about using a gama goat engine which is a Detroit 3-53 and sm420. While I have the measurements of the engine I’m not sure if it will fit. Length = 33, width =27, and height 39. Seems like a lot but checking the engine bay it looks like o could easily move the radiator forward a few inches and the width of 27 wouldn’t fit between the frame rails, but the max width on a 3-53 isn’t down low, it’s mid block where the blower is.
Anywho, if anyone had swapped in a Detroit already, I’d love to see pics of it!!
With an approximate usable RPM range of 1750-2150, you're going to need a lot more gears than that SM 420 has. Better add a 3 speed Brownie to give you 12 forward speeds, and do a lot of dumbbell curls with your right arm- - - - -you'll be "rowing it with the shift levers"! Jerry
The murder victim was drowned in a bathtub full of Rice Krispies and milk. The coroner blamed the crime on a cereal killer!
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
The 3-53 was rated at 101 HP. new. I drove a 1970 3/4 ton GMC with a 3-73 and a SM420 in it. One of the most underpowered, slow trucks I have ever driven. It needed 6 inches of body lift to close the hood. Be prepared to do A LOT of work to make it fit. The detroit "power band" is fairly small, they don't "lug down " well. If you are looking for "slow and loud" then go for it.
That’s what I was thinking. Doing the measurement and comparing to Kline measurements, it looks like only the 3-53 will fit and just barely. It’s hard to find a 3-53T, so I’ll probably do a 3-53N and just add the turbo parts later as I find them.
Grigg on here did a 4-53T conversation in A-D 2-ton Truck. Others have done it. Search these forums. Also there are some YouTube videos of diesel conversions in old GM trucks. Maybe that will be useful.