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Mod | | | Forums66 Topics128,134 Posts1,056,402 Members48,441 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jul 2017 Posts: 45 'Bolter | | 'Bolter Joined: Jul 2017 Posts: 45 | Hey guys. I have just recently purchased a 55 series 2 chevy pickup. It's a 3 speed on the column six cylinder. Changing all the fluids. I cannot find a drain for the manual transmission. Also, I see on the tail of the trans 2 bolt holes for a support but there is none. There doesn't appear to be any holes in the frame for one. Is this correct? Thanks in advance.
Jim
1955 Chevy series 2 6 cylinder, 3 on the tree Short bed, step side
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | welcome to the garage .... if the trans doesn't have a plug on the bottom, you'd need to have a quick lube joint use their sucker to clean it out to refill .... the support bracket on the tail is not necessary for your truck, may indicate it's actually from a car - no matter ..... and it could be the later [67+] Saginaw 3 spd, indicated by the number of bolts on the side cover, originally yours would have 4 bolts I believe, later ones have 7
Bill
| | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Or get a piece of plastic tube and siphon it out yourself.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires. '47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle. '54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed. '55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Jul 2017 Posts: 45 'Bolter | | 'Bolter Joined: Jul 2017 Posts: 45 | Well that sucks....
Thanks guys for the info and suggestions. I'll get the tranny cleaned up so I can get some numbers off it and do some research to find out what it is. Thanks again
Jim
1955 Chevy series 2 6 cylinder, 3 on the tree Short bed, step side
| | | | | Joined: Apr 2005 Posts: 2,098 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,098 | I have found the 4 bolt side cover transmissions without a drain plug with 61 up date codes. Since it has the rear mount it is at least from a 58. There was a time when manufacturers determined that changing these fluids wasn't necessary. Those of us that believe in maintenance think this was a wrongheaded approach. I suppose they had no idea these vehicles would last this long. You should be able to drain some of the oil by removing the lower bolt that holds the tail housing to the case. Just put some sealant on it when it is reinstalled. A lot of mixing and matching went on with these trucks over the years. Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes 1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes 2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans 1947 Willys CJ2A w/F-Head engine
| | | | | Joined: Jul 2017 Posts: 45 'Bolter | | 'Bolter Joined: Jul 2017 Posts: 45 | I wondered about that Fred. It's at the lowest point of the case. I haven't had a chance to get to the numbers yet. It does have a 7 bolt side cover. I have an old gasoline siphon bulb. I'll see what the bottom oil looks like. If it's cruddy I'll take out that bottom bolt. This tranny might be cooked but I won't know until I can drive it again. I've got a 3 speed floor shifted Saginaw out of a 69 chevelle. Any chance that would mate up to the 235? Thanx Jim
Jim
1955 Chevy series 2 6 cylinder, 3 on the tree Short bed, step side
| | | | | Joined: Apr 2005 Posts: 2,098 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,098 | As you indicated that the truck has the 7 bolt side cover trans it should be very similar to the Chevelle trans as it would be from that era. The mounting and input shaft is the same from 48 up on trucks and 55 up on cars. The differences could be the shift arms and possibly the front driveshaft yoke. Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes 1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes 2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans 1947 Willys CJ2A w/F-Head engine
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