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@@brownwrench yep, fixed now. New brushes didn't seat properly.

@@matts1972blazer nice! You won't regret it. The 401 and 478 makes these engines come alive, they rev up quicker and have a ton of torque. And a great sound to boot.

@@matts1972blazer I modified the idler gear to fit the timing cover. Is fairly easy to machine. I have an engine build thread on 6066gmcclub that describes the process. Go with the gear setup, much better than the timing chain.

@@user-in3hp1xs9b too advanced, yes.

@@user-in3hp1xs9b nice, take good care of it. The 351E is a rare engine and a nice powerplant for a truck. Use oil with zddp/zinc in it.

@@Imintune... gasoline and truck use, probably. Stationary and diesel, not so sure. Detroit diesel has V6 engines as well.

@@odelldickey2218 appreciate it! Almost have it 4 years now but never gave me any trouble. A rolling restoration so to speak.

They are unique engines!

@@Prowbar That spark plug feeding straight down through the intake runners is a stroke of genius. I wish more engines had that design.

​@@SirEpifire Works great keep the plugs and plug wires away from the heat from the manifolds. Keeps the wires short as well. The drawback is that crud gathers in the pockets and needs to be blown out using compressed air before removing plugs.

You're right, had everything in the assembly lube and primed. Bled the rocker arms of air when we had the engine running better and plenty of oil came out when the trapped air was evacuated.

@@Prowbar Good now it will last . Good luck .

​@@txrick4879thanks. Really enjoy the engine, have 3000 miles on it now. Starts and runs like a champ, tons of torque, great sounding exhaust note.

@@Prowbar oh yeah and those mothers last and have big pulling power . They do sound great .

@@txrick4879Agreed, thanks for watching. If you have more questions,let me know. I have more videos of the truck on my channel.

12 volt. Just a weak starter for such a big engine

Primed it before hand. The rockers don't get a lot of oil and it takes a while for them to bleed off the air inside the rocker shafts. Everything was coated with assembly lube though.

Yep! 3200 governed redline from the factory.

See if it goes away when the engine is warmed up, if it does, probably piston slap (like this engine does). If the lifters are that loud you need to set the lash asap. .012 intake .018 exhaust. Otherwise a rod bearing or other funny stuff.

Lifters are noticable but just clickety clack. Not loud or bothersome.

@@Prowbar took my valve cover off found a bent push rod

​@@mini_maniac4205ah. New pushrods can be found on Rockauto.

Haha. You tried to kill it I assume?

Solid lifters and an aggresive camshaft ramp profile make up for such a noise. Decreased the lash since, less noise.

Thanks for sharing. Were they pickups or in the bigger trucks?

It does, needs more compression to up the performance.

Runs on propane and gasoline. Consumes about the same as a 460 or 454.

Haha, for sure!

I think they look nice, the valve covers and exhaust manifolds have a nice shape to them IMO.

Both are a 60 degree V6 engine, they should sound the same.

Delta Cam did. They specialize in regrinds. They reground lifters for me too. Cam came out different than I wanted though, low lift on the intakes and a later intake closing point than planned. quality of the regrind and lifters was very good.

@@Prowbar okay cool good to know. Do you feel like that made a big difference in power?

@@connormonck372 never drove mine with the stock cam. Did drive the old 305 with a stock cam. I like the performance of my grind, but that is pretty subjective here

@@Prowbar okay cool thanks for the info. Not a lot of custom engine work being done on the big block v6s so it's cool to see

@@connormonck372 working on some bigger surprises, but thats for a later date.

Nice. Regular maintenance or a full rebuild? In which model GMC was it installed?

@@Prowbar didn't rebuild but about everything else. It was in a c60 I think. It was a mobile feed mill. In plain city Ohio

@@clarkmarshall4893 in all honestly they aren't great to work on. In the pickups it is very tight too big of an engine to fit. The bigger trucks have a little more room. Components are very heavy and the gaskets are finicky. But I love them regardless.

@@Prowbar had to hang on my head to set points 😕 they suck in a bigger truck too. They were just an awful engine. Not a fan. Mains weren't very good, ignition system not very good.

@@clarkmarshall4893 Yep the points are quite a ways in the back. Mains? Main bearings you mean?

GM wasn't particularly good at making diesel engines either, at least for the last century.

@@Prowbar Detroit was one of the best out there. Bill Clinton screwed that up.

@@jimmychanbers2424 forgot about the 2 stroke. Was thinking 4 stroke.

Yep, 1.8 times the displacement of the 4.3

Yes, you're correct, all grunt. Doesn't like to rev over 2500.

Sounds like it, because of the exhaust leaks. They have a slight lope stock.

Happy new year!

Nice. The parts for the conversion are still made and available, but you would need a refueling station of some sort. Not sure how common these are in the US?

No.

Haha, thanks. This is quite a common conversion, here in the Netherlands.

Propane is almost 1/3 the price of gasoline.

1960-74, GMC only. From 60-68 in pickups. 305 to 478ci. Also a V12 702ci and a 637ci V8. All have a 60 degree bank angle.

@@Prowbar Appreciate the info. Thank you

The bore is 5.125" and the stroke 3.86". Connecting rod I'm not sure but they are big. 7.185" is the number in my head but I cannot confirm. The deck height is tall though, so the rods have to be long.

@@Prowbar WOW, those are some awesome numbers.... I really like engines with a big bore short stroke and a long rod. I bet with some good breathing heads cam valve springs and compression that engine would really turn some high RPM's, and/or with some kind of forced induction, (turbo). I didn't realize those engines were that well engineered. I once heard Richard Holdener say that even if a 6 cylinder and an 8 cylinder are the same displacement they'll still make the same amount of power, as long as the heads on the engine with the lesser no. of cylinders has the head flow to match up with the larger cyl. bores.

Yep, would be a great choice. Lots of GMC school buses had them back in the day.

@@Prowbar I remember that too. My GMC school bus had one. A 572 or something like that. It was a dog. But it moved easily. If that makes any sense.

@@therealjayseh 572? You had the 305, 351, 379, 401, 432, and 478. A 637 V8 and a 702 V12. What year was the bus? And I agree, they have the torque to move the bus easily but there is no additional performance. They just do their job.

@@Prowbar 478 I don't know why 572 came out lol

@@therealjayseh it'll suck gas but gets the bus moving day in day out haha

These engines oil very little to the rockers are require the rocker guides to be bled before oiling properly. Everything was coated with assembly lube, no issues there.

@@Prowbar I always prime the oil pump with a drill motor, to get everything flooded with oil before starting.

@@williepelzer384 I did too, it says it in the description