292 inline 6

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Little Mouse
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292 inline 6

Post by Little Mouse »

I just bought a 1955 3600 3/4 ton pickup with i think the 235 and a granny low 4 speed. What would it take to put a later 292 in it. Will the bellhousing bolt up and will the floor push button starter bolt on to the 292.
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Re: 292 inline 6

Post by Tuner »

No and no. Well, maybe on the starter with some linkage modification or fabrication, or it could probably be rigged with a micro switch and a relay to fire the magnetic solenoid on the 292 starter. Bellhousing to block bolt pattern is different.
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Re: 292 inline 6

Post by Little Mouse »

Ok thanks sounds like ill stick with the 235.
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Re: 292 inline 6

Post by Tuner »

270 or 302 GMC fits, bolts in.

Trivia: Buick Straight Eight pushrods fit the 270-302 GMC and are tubular instead of coathanger wire.
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Re: 292 inline 6

Post by Little Mouse »

Ill try to find a complete 302 to rebuild.
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Re: 292 inline 6

Post by PackardV8 »

Do you want nostalgia? If so spend twice to three times the money to build the GMC, because the 302" was never thick on the ground. (And when was the last time you saw Buick I8 pushrods in the U-Pik yard?)

The 292" bellhousing and manual shift transmission parts are still readily available and for cheap. The 292" will make more power for less money, but have a goal, make a plan and follow through.
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Re: 292 inline 6

Post by Tuner »

The 235 bell housing will not fit the late six 230, 250, 292 engines or V8 engines. The 292 bell housing will fit the 4 spd. granny low transmission (according to the link below). The later Chevy 6 230=250-292 series of engines use the same bell housing bolt pattern as Chevy V8, but 216=235=261 Chevy and 270-302 GMC have a different bolt pattern than the later engines.

This link explains the truck 4 speed tranny interchange.

https://www.novak-adapt.com/knowledge/t ... ual/sm420/
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Re: 292 inline 6

Post by Truckedup »

There are two 55 Chevy trucks, first and second series...First series looks like the earlier 48-55 trucks, the second series looks more like a 55 Chevy car and was the first year for a V8.....Putting a GMC or Chevy 292 in the 55 first series will require moving the radiator forward about 1-1/2 inches.The GMC is expensive to rebuild but will bolt in.230-292 engine will require different mounts ,bell housing etc....If it's the second series, install a Chevy V-8
Motorcycle land speed racing... wearing animal hides and clinging to vibrating oily machines propelled by fire
Little Mouse
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Re: 292 inline 6

Post by Little Mouse »

The 55 i have is the irst series as of now wirh out checking it out further tgere is nothing wrong with the 235. I assuming its a 235 for what i read so far chevy put the 261 only in 2 ton pickups and school buses i did read where they were put in pontiac cars. With the 7.05 granny low sm 420 trans not like i need more torque in low gear lol. I would like to build a 302 gmc for it.
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Re: 292 inline 6

Post by pdq67 »

I don't know if, "Trans-Dapt", is still around or not, but if so, they might have a 292 to 235 bell-housing to use for a conversion like this.

Might look into it..

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Re: 292 inline 6

Post by Truckedup »

Little Mouse wrote: Mon Apr 23, 2018 12:26 pm The 55 i have is the irst series as of now wirh out checking it out further tgere is nothing wrong with the 235. I assuming its a 235 for what i read so far chevy put the 261 only in 2 ton pickups and school buses i did read where they were put in pontiac cars. With the 7.05 granny low sm 420 trans not like i need more torque in low gear lol. I would like to build a 302 gmc for it.
Yes the 261 in bigger trucks....A 26i looks identical to the 235 except for two casting marks that look like this II (some 53-54 235's also has the mark)above the starter motor..And the block casting number will ID it..
A 302 will provide more power but they are expensive to build, and a 235 Chevy rebuild ain't cheap either..Guys get all worked about the 302's because of past history compared to Ford flathead V8's and a few more recent very modified racing versions make near 600 HP...But a streetable engine is no where near that power..Best I ever saw was a nicely ported stock head 302 with higher compression and more cam and carb making 255 HP and 335 ft lbs of torque on an engine dyno.Good power for a vintage engine actually.. Most will make about 180-200 hp when modified....And easily cost in excess of $4000....
Motorcycle land speed racing... wearing animal hides and clinging to vibrating oily machines propelled by fire
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