Not knowing too much about these Tall deck engines what sort of application would this be useful in?

I see that they produce between 200 to 245 NET HP (some sites say 366 GROSS HP) and around 380 ft lbs of torque.

How about a Square Body project?

73SC wrote:

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Not knowing too much about these Tall deck engines what sort of application would this be useful in?

I see that they produce between 200 to 245 NET HP (some sites say 366 GROSS HP) and around 380 ft lbs of torque.

How about a Square Body project?

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These 366 / 427 tall decks were in dump trucks, 3 ton / 5 grain trucks and good for torque.  Not much opportunity for hot rodding this type of engine as it is really just a truck engine.

Square bodys always had the 454 option so there would not be a reason to stick a 366 in a square. If it is a good engine, there is always somone searching for a replacement for their dump/grain truck.

If the engine is not good, the 3.76 cranks are typically steel 6223 and the rods also can be used in another BBC build, keep the rocker studs, guide plates, valve keepers and haul the rest to Urban Mine.  

-- Edited by 68 Grande on Wednesday 5th of May 2021 11:09:26 PM

The 366 block is no good for that though, bore is too small. Only the 427 tall deck. I'd take a 366 if someone gave it to me. Keep the crank, mains caps and other common bits to re-use. The rest is not worth much.

Wouldn't you just put a 396 in it?

4SPEED427 wrote:

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In a pickup, yes but not in a C60 style truck that would be used for hauling grain, gravel etc. That 366 was about the best gas engine ever available in those trucks. All the guys who used them way back when for hauling gravel said they were superior to the 427 tall deck truck engines, strangely enough.

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 Back in the 80s at work we had single axle dump trucks with 366 and 427 engines. In the winter we would install sanders onto the trucks to sand our city streets. As far as power in a single axle there wasnt really much difference but there was a huge difference in fuel economy. The trucks had a small fuel tank behind the step, I cant remember what it held, 16 gallons maybe. When sanding streets the 366 trucks would easily run a full eight hour shift on a tank, the 427 trucks would refill at lunchtime because they would run out of gas before the end of the shift. 

Paul

4SPEED427 wrote:

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In a pickup, yes but not in a C60 style truck that would be used for hauling grain, gravel etc. That 366 was about the best gas engine ever available in those trucks. All the guys who used them way back when for hauling gravel said they were superior to the 427 tall deck truck engines, strangely enough.

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Ah, get it now. Today though rather than rebuilding a 366 you'd even consider a 4 bolt small block, probably a 377ci version ie a 350 block with a 3.75" stroke forged Scat (or similar) crankshaft. With the right heads would probably produce similar power and torque, the bore and stroke are so close it doesn't matter. I guess the extra rings and long rods in the 366 would be more truck suited. In Australia we only got 292ci straight 6 in C50 and C60 right up until the end of the 70's. The C20, C30 and K20 all were 292 as well until we got emissions laws in 1979 that stopped the 292 and it was replaced by a 350. The K20 was only ever a 292 though. So we never saw those BBC truck engines in vehicles assembled here.

-- Edited by HK1837 on Monday 10th of May 2021 01:40:57 AM

When I started working for the City they still had 1969 C-40 dump trucks with 250 Chevy sixes and a four speed. They also had a 1969 one ton with a 292!
I thought it was odd until I found an old equipment tender in the maintenance files. It was for a dump truck 16,000 gvw 11 foot box. That was the extent of the tender. Its no wonder that back in the sixties and seventies there were odd things going on with the vehicles. Literally the cheapest option to satisfy the tender!

Paul

130 horsepower, 225 lbs/ft torque. Ouch that would make for a sluggish hauler.