Need to know the PTO that fits a Spicer 5553a trans. Thought I had one, when I opened the cover, the trans. PTO drive gear sits 3.187" to the root of the gear, much deeper than the PTO I have. If anyone has a PTO that has the drive gear sticking out about 3", please let me know.
Thanks, Ed
Last edited by EdPruss; 03/19/201911:04 AM.
'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.
What is this trans out of? I have some ptos and have tryed to figure out what they fit but the manufacure told me they dont keep recoreds as to what they fit. I went through this on a newer 5 speed it had 2 pto holes i think 6 possibilitys on one side and 15 on the other side.What kind of teeth strait or angled?
Spicer transmissions were not that popular in the '50s. There really are no catalogs available that I know about. I have several PTOs, but they all came off of either Clark or New Process. I think you will have to find a transmission which is known to be a Spicer and has a PTO on it. We used PTOs back in the '50s to pump off gasoline. It was complicated then and has gotten really tough after 60 years.
I seem to remember that there's an adapter gearbox that fits between the transmission and the PTO on some applications. Then a more conventional PTO box will bolt up. You might want to contact Jasper engine and transmission exchange in Jasper Indiana. They have been in the heavy duty transmission rebuilding business for decades, and they just might have the information you need, and possibly the right adapter. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
I have 2 trucks with the 5 speed and 3 PTO's between the 2. If someone could educate me on the identification I'd be more than happy to let go of one. I'm not planning on using any of them. For some reason I think one has the Spicer but honestly I have no idea.
Spicer transmissions usually have an aluminum tag on left side of case at top right. The model numbers from those tags will be much more useful in identifying than casting numbers. Same case could have many different gear sets in it, which may or may not affect PTO selection.
Well, I found what I need to reach far into the gearbox to engage the PTO gear to drive my PTO box. It takes an idler gear in between, Chelsea PN 328530-1x. They also are used on some Mack trans.' The distance from PTO mounting surface to root of trans. drive gear is 3.285"
'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.
