We had a mid-1960's GMC church bus with a 403-ish CID V-6 and a Spicer 5 speed. It was a retired school bus and governed to 55 MPH. At idle, I could COUNT the cylinder that was firing, as it idled at less than 400 RPM. Engine was all torque, not much horsepower (I seem to remember the SAE plate under the dash listing it at 200 HP@ 3500 RPM, which it wouldn't spin-up to!), two-stage hydraulic brakes (pump once to fill the reservoir, THEN you had "power brakes") worm and sector steering and a 19" rear axle like a dump truck! I drove it 200,000+ miles MYSELF for kids for Sunday School and taking the Seniors places. We dumped it when it needed the tranny re-built at about 800,000 miles. The governor was INSIDE a very tall distributor, and changing to a non-governed unit was VERY, VERY expensive. Came with a field-excited 12 volt GENERATOR meaning you had to have a good battery, or no juice. I changed it out to a "drop-in" Delco alternator after about a year. Never used "Granny (1st)" on the Spicer. Start-out in 2nd, even with 46 adults inside on the steepest hills.
Glad to see this... I am under the impression that the 432's are quite rare. Though I have never seen another, other than mine, I know of only one person who has one. A lot of time and money has gone into fixing mine up including new rings and bearings. I ended up having a 401-flywheel balanced to the 432 crank since I could not find a good 432/478 flywheel. At the moment, my plans are to put in in my '62 1-ton pickup. Thanks for sharing!
Wow!!!! That mill runs great, Jake! Good on you! Like you, love the way those big V-6's sound. Sooooo durable, they'll run literally forever if given just a little love once in a while. And not a SINGLE, solitary computer needed to make it go! So good to see you again and hope you're doing well! Take care, God Bless.
Another V6 enthousiast here. Believe me, any bigger V6 is a huge improvement over the 305. The 305 lacks power to spin the heavy internals. First drove the my pickup with a 478 yesterday, twice the power over the 305.
That's a big upgrade from the 305. We'll see, I got time to think on it. Won't be getting to the truck until I find a building anyways. The 432 would be a cool upgrade! But I can be an original nut too when restoring stuff.
My home town Easton CT had a 1963 GMC fire engine with a V6 gas engine 4speed and 2 speed axle. I loved hearing that engine as it ran through the gears or pumping. Not sure what displacement.
When I was a kid the feed store had several 65-66 GMC big trucks for delivery of feed , and coal. I'd stay there most of the time before old enough to start school. I'd ride with the old men who ran deliveries. Still remember them winding thru the gears. They had one with the W style valve covers. Thinking it was a Chevrolet, C60 - C70 probably a 348 , or 409. It sounded so much better. Personally never cared for the sound of any V6 , but we all have our own opinion 😅. I do think the V6 GMC is one of the most dependable, long lasting engines ever built tho.
Some like em, some don't. A lot of guys pull the V6's when they build these era trucks. For practical use it's probably better with another GM V8, but I still like the V6's. They just won't get you anywhere in a hurry!
I love that sound too,, my 1966 GMC stepside,had the 305c, in it, that was a sweet running engine,till my stupid___s, decided to flush the engine with engine flush I bought at AutoZone,,, oh it flushed it alright! I DIDN'T THINK ABOUT THAT HIGH VOLUME OIL PUMP IT HAD,,, AND THAT THE PICKUP SCREEN WAS ONLY 1/2" OFF THE BOTTOM OF THE PAN,,,, which STOPPED up with sludge as soon as I fired it up,, AND starved the engine for oil,,,,, AND SPUN NUMBER 4 ROD JOURNAL!!!!😢😢😢😢
Hello Jake, good to see ya , sounds like you got a pretty good engine there, would be nice to fine a truck to put it in, thanks for the video enjoyed it, hope to see ya again soon.
Wow that's quite a piece you got there! I didn't even know they made V6 engines that big!!! You definitely have to find a truck to put that thing into at some point soon!!
I never knew they built such an engine! I guess smaller diesels and the price of gasoline kind of killed the market for large, low end torque engines for small and medium duty trucks. Nice to see you making videos again.
From what I understand, '73 was the last year for the GMC V6 line of engines. You probably right about that... I think all the emissions BS started around that time too. Thanks Jethro!
@@5TractorguyI tried to buy a 75 GMC 6500 dumptruck. It had a 432 with a 5&2. It also had an HEI distributor in it. Advertised as a 75. I know they were still available in 74 6000, 6500, 7000 trucks but nearly everyone got a Chevrolet V8 of some sort. One guy told me the 432 would lug better than a 427. I know what 401s could do
Thumbs up for this one Jake, I have often wished I could get an older 'carburetored' ( I know this is not a real word :) engine to have a on a display stand too. This is one smooth running GM Vee engine. My wish is to find and rebuild an 300 cid in-line 6 Ford engine. Scarce as hen's teeth around where I plive though. Good entertainment Jake, Thanks very much.
Glad you enjoyed Reg. I've heard of the Ford 300, good engines from the sounds of it. Though even around here I rarely see them. Tell you one thing, it would be a lot easier to have that one display than this V6! This dang thing probably weighs 1,200 - 1,300lbs collectively with that Spicer trans.
Nice to see you again. It's been a while since I've seen one of your videos. Sounds great for sitting that long. Always looking forward to seeing your videos. Hope to see you soon.
Great sound! Would love to have a tape of that idling for about 20 minutes, lay down in the shade on some fresh-cut grass and doze off...... Thanks for the explanations and not making us watch all the dinking around hooking up hoses and wires.
YO, Jake and that is a SWEET old engine. I remember the V-6's, including the old 478 Toro-flow Diesels. Unc had one in a tandem with a Prentice G-model log loader with a 5x3. I always moved him around when we were building retaining walls. And an old logger pal had a gas job with a dead tandem that he just puttered around with and made a living. He was a smoker and it caught up with him and he died. The family decided to sell his stuff and a couple of young guys bought the truck and promptly blew it up. I've never wanted to give someone a good KICK so bad for something like that but it probably went to china. Hope you are doing good and covered up and maybe found a place of your own. We ended up with a Stihl battery hand mower and a Craftsman battery zero turn BUT still have the opposed piston Vanguard and the 85 Snapper 4-horse as backups. The rest are gone. Found out my heart is the culprit for my non-zip which is a blessing that I'm not making it up. Changed the oil in the opposed so have some blisters to show for it. Pick me one, Buddy! My old pal is going to bring my last 12 string back since he has a collection. Maybe I can get a 'D' and maybe not as we shall see. Remember me when you sing one with your squeaky little voice and there was NO doubt the V-6 would fire. Like L-heads and 301 cast irons. Thanks and God Bless Yall!
I'd love to get my hands on an old Toro-Flow!! Those are cool engines... Downright shame about that rig, some people just don't know how to treat old equipment. Doing fine here, still on the hunt for a plot of land. Not much up for grabs in NH or NW MA. I heard the Stihl battery stuff is pretty good. Not up to par on the zero turns though. Sound like they'll work out just fine and you guys will be able to do what ya gotta do. We got a gig on the 16th of September at some Oktober fest, I'll belt one out for ya Lewie!
THANKS, Jake! I remember Unc showing me how to spray ether into the old Chevy with the Toro-flow. He said he didn't know if it helped but it couldn't hurt. I did it the way he did it from then on and we were both happy. Once it fired, that was enough. Yeah, I remember the sound of the old V-6 gas. Seems like Alvin had glass packs on it and it was just puttering along anyway. Land here is 10 times too much but the influx of goffers has driven everything out of hearing. And the battery stuff will do us just fine because it just stays here and doesour place. NOT commercial and the zero turn is a LOT more sensitive than a hydraulic job. TOUCHY but I think it's a Ward/Leonard setup which has stood the time test. Wished you were here to take it for a run! And it's not a bad thing to be working at home. You know where everything IS! Thanks for squeaking one off foe me, Buddy and God Bless Yall as fall comes on!@@5Tractorguy
The transmission looks to be an overdrive,just for general information,the 305/351 V-6 was available in 67-8 GMC 1500-3500s,69 was the last year of the GMC V-6 the 305 being the only option.
Did it have oil pressure after your loop ? I didn't see any attempt to find out. What condition was oil in? Do you think it would have been better if you had cleaned all dirt rubbish from around the spark plugs and removed them all and poured half a cup of dieso into each cylinder before you even turned it on the starter?Do you think it would have been wiser to check out oil pressure before you started it? I am very glad you put a radiator on it and water in before you started it, SO MANY people don't when they start an engine that has not run for a long time!!! All the best with your plans for this engine. I would love to have it 😊
Great tractor repair video. Are you up for a collaboration? I'm looking for youtubers to work with to share more tips on outdoor power equipment repair. Maybe you're interested this collaboration?
It is in fact a 432. I should've included it in the video, the block is stamped as such in front of the right cylinder head. They were only made for a short while, just a 401 with a larger bore. www.6066gmcguy.com/EngineData.html
