Recent content by fnny6770
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Quadrajet Primary Shaft Bushings
I've rebuilt several quadrajets and I just use lacquer thinner it dissolves everything and it comes off clean!- fnny6770
- Post #61
- Forum: Carb Fuel Systems
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454 year
My 1980 GMC came with the 400 from the factory my brother installed the 454 out of one of his other trucks but I don't remember what year, how do I identify the year of this 454? Or how do I identify anything on this 454?- fnny6770
- Thread
- Replies: 2
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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Big block running hot. Can’t figure out the issue
Checking that the carburetor providing the correct amount of fuel so you're not running lean would be the next step I would do knowing what I know, because your problems and all the cures you've tried to fix your problems is exactly what I went through 15 years ago! I did everything under the...- fnny6770
- Post #74
- Forum: Engine & Performance
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Dual tank switches and valves
I failed to mention this is in my 1980 GMC 1 ton dually- fnny6770
- Post #2
- Forum: Carb Fuel Systems
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Dual tank switches and valves
I am trying to get my fuel tank situated, I have dual tanks one was already replaced but I'm looking at this valve two-way valve, does anybody have a diagram of this valve and where the lines go? It's the valve that switches from one tank to the other- fnny6770
- Thread
- Replies: 2
- Forum: Carb Fuel Systems
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Big block running hot. Can’t figure out the issue
Proper AFR is 14 to 1- fnny6770
- Post #64
- Forum: Engine & Performance
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Big block running hot. Can’t figure out the issue
Leave most carburetors are efficient at 14 to 1.?- fnny6770
- Post #62
- Forum: Engine & Performance
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Big block running hot. Can’t figure out the issue
Here is something to consider, years ago I had a Pontiac 455 that I rebuilt from the ground up, everything was brand new, bought remanufactured quadrajet 4 barrel, engine had lots of power but I felt it could have a little more, sitting they're at idle the engine temperature would slowly creep...- fnny6770
- Post #59
- Forum: Engine & Performance
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Two piece drive shaft bolts
1980 GMC k 3500, Does anyone know what size bolts hold this two-piece driveshaft flange onto the output of the transfer case? It's the output that connects the drive shaft to the front differential- fnny6770
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- Replies: 0
- Forum: Differential & Driveline
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Two piece front drive shaft
The drive shaft that came with my truck is about 3 in Long then it should be, it came with the automatic transmission from the factory, my brother put a standard transmission in and now the front two piece is too long, I've been looking for a replacement but I can't find one the exact length of...- fnny6770
- Thread
- Replies: 5
- Forum: Differential & Driveline
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17-in rims
I spoke with a guy at Motorsport tech and he hears of these issues all the time, he's very familiar with the rim hub diameters of a lot of vehicles and he makes lots of adapter rings for these older square bodies being converted to larger hub rims, I've decided to have some custom-made that will...- fnny6770
- Post #16
- Forum: Wheels and Tires
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17-in rims
On a side note they fit snug inside the rim, the outside diameter 121.3, mm but they fit a little loose on the hub, 116.7 mm inside diameter. When I measure the hub diameter of the original rims it measures out 115.7 mm, maybe this small difference won't matter?- fnny6770
- Post #15
- Forum: Wheels and Tires
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17-in rims
This is the exact measurements of the rings that I bought that allow these wheels to fit my 1980 GMC- fnny6770
- Post #13
- Forum: Wheels and Tires
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17-in rims
I bought those rings off of Amazon, they have many different sizes made out of different materials.- fnny6770
- Post #12
- Forum: Wheels and Tires
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17-in rims
Update, I bought a set of hubcentric rings for my 1980 GMC dually to mount 17 inch wheels from a 2010 Ram 3500, so far so good- fnny6770
- Post #10
- Forum: Wheels and Tires
