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1984 C3500 project

Today at 03:51:01 PM by lefty70
Views: 9 | Comments: 1

Big project ahead with my youngest son.

Sent from my iPhone using Tapatalk

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ENG OIL PRESSURE

Today at 01:48:38 PM by CashpitC10
Views: 19 | Comments: 2

Have 83c10 with a 305 just changed oil less than a month ago. When i stop at a red light or stop sign the oil pressure drops below 20lbs. What could be the cause of this? Any help would be great. Thanks Jody

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'80 305/TH350 losing power in 3rd

Today at 01:29:20 PM by deadllama | Views: 17 | Comments: 2

Hey y'all. My truck is my first old project vehicle, and I could use some guidance.

I've got an '80 C10 Silverado with a 305 and TH350. I bought the truck knowing both were in rough shape, but I've been driving it every so often without incident until the last month or so.

The truck idles fine, revs fine at idle, and runs fine in first and 2nd, but it seems like it's shifting from 2nd to 3rd too early. When it shifts from 2nd to 3rd the revs drop way down, and the truck seems to lose quite a bit of power, like the motor is bogging down. If I really stay on the gas, it will shift normally, but I can't do that in traffic, and even then it feels like it's missing some power in 3rd. It never wants to get over 45-50mph.

Today when that happened, I was going up a slight hill and I had to get on the gas a little bit to keep from slowing down too much in traffic, and the revs picked up slightly, but the motor started cutting out. I thought it was going to die completely, but it never did--just stopped running for a half second and came right back to life, maybe three or four times. Once I topped the hill, I made the block and went back home instead of driving it to work like I'd planned, and it ran fine the rest of the way (though I was babying it at that point).

I initially suspected the transmission. For one, it's got 150k miles on it. Also, it's always leaked a little around the front, like the input shaft seal is worn out. I have only had to add fluid once, though--it's not a big leak.

Today made me wonder, though. The truck has always run fine until today. Could a dying transmission cause what I'm describing, or should I check something else first? The fact that it started cutting out makes me wonder if I should check the fuel pump instead?

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Replacing door 87 Silverado

Today at 11:10:15 AM by cffisher
Views: 15 | Comments: 1

My 87 Silverado has a bad door. I have a good used OEM door. My question is can the door be replaced with out removing the fender. Also I'm replacing the cab corner and rocker panel on this side too. I know these things would be easier with the fender off but is that a needed?

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TH350 Problems

November 19, 2019, 10:58:57 PM by uprising | Views: 49 | Comments: 3

Good morning guys,
i have some troubles with my transmission. There is a leak somewhere at the transmission. The vacuumline, modulator and measurement tube looks ok. Maybe the seal between engine and transmission? If yes, which seal do i need? And how can i identify my modulator? At rockauto and are different types (colours)? My actual installed modulator can‘t be really identified! Pretty durty and old.
Also the tranny reacts a little bit weird. If i set the reverse gear it takes 2-3s after the car is moving. Same for „D“. Any idea? Maybe the vacuum isn‘t working properly?

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