My 66 Service Truck Build Thread - Page 12 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Fatherof3 · 03-19-2020, 11:11 PM

Quote:

Originally Posted by LostMy65

Hey, the plan changed again. I got this beat up bed for free, so I'm installing it. The main goal for this 66 is to use it for truck stuff so I can finish all I want to do with my 65.

Dana 60 with Truck Arm mounts. I'm jealous.
I have the Eaton in my 65 C20 you can't do anything with.

LostMy65 · 03-19-2020, 11:29 PM

Quote:

Originally Posted by Fatherof3

Dana 60 with Truck Arm mounts. I'm jealous.
I have the Eaton in my 65 C20 you can't do anything with.

Actually, it's a 79 GM 14-Bolt with 4:11 gears.
I think the Eaton I had in it before was 4:56

LostMy65 · 03-20-2020, 07:12 PM

Rebuilt my first carburetor a couple weeks ago.
The one on my 66 acted weird. The truck would backfire when I hit the gas, it would also bog.
Put the rebuilt one on it today. Man does it run nice.

Fatherof3 · 03-21-2020, 09:23 AM

Quote:

Originally Posted by LostMy65

Actually, it's a 79 GM 14-Bolt with 4:11 gears.
I think the Eaton I had in it before was 4:56

Any idea the width difference between the two?

LostMy65 · 03-21-2020, 11:40 AM

Quote:

Originally Posted by Fatherof3

Any idea the width difference between the two?

I'll guess 3/4 inch wider each side for the 14-bolt. 1-1/2" total.
That's what I think I've read.
You might find an answer in one of these two threads:
http://67-72chevytrucks.com/vboard/s...d.php?t=550878
http://67-72chevytrucks.com/vboard/s...highlight=Bolt

LostMy65 · 03-21-2020, 11:12 PM

Installed a barden bumper and mocked up the tailgate.

LostMy65 · 04-01-2021, 08:19 PM

Been having trouble with it running rough and backfiring when I rev it up.
Idles really nice though.
I've swapped out the distributor, I've checked the timing, and I've swapped the carb to the fitech from my 65, and still acts exactly the same.
.
Next I'm going to check if the timing chain hasn't skipped a tooth.

**cwcarpenter98** · 04-01-2021, 11:30 PM

You've probably already checked, but I did a stupid thing twice on my truck. First time was when I first changed the plug wires. I had two wire right next to each other on the cap switched. Idled fine but couldn't drive it over 1500 rpm because of it backfiring a ton. Second time that happend was after the engine swap and putting an HEI dizzy in. Swapped two plug wires again and had a heck of a time figuring it out because I was certain that I had wired it correctly

LostMy65 · 04-01-2021, 11:56 PM

Quote:

Originally Posted by cwcarpenter98

You've probably already checked, but I did a stupid thing twice on my truck. First time was when I first changed the plug wires. I had two wire right next to each other on the cap switched. Idled fine but couldn't drive it over 1500 rpm because of it backfiring a ton. Second time that happend was after the engine swap and putting an HEI dizzy in. Swapped two plug wires again and had a heck of a time figuring it out because I was certain that I had wired it correctly

Yes, I did check that, but I'll check again. Thanks

LostMy65 · 05-13-2021, 01:07 PM

Moved it into our other barn.
I'm going to tinker on the motor some more and see if I can get it to run nice. It's no fun reaching over to access the motor. Maybe I'll build some scaffolding around the front

. But I'll start with doing a compression test and then a leak down test. Depending, I may just pull the front clip off to make tinkering on the motor more enjoyable.
I don't mind on my 65 because it's a lot lower.

LostMy65 · 02-08-2022, 02:52 PM

Okay, digging in to this backfiring again. I want to sell it or trade it for an old StarCraft boat.
Taking it back down to my house today and will pull off the front clip so I can get access to everything and step through everything again. Not even going to bother with the carb at this time. The Edelbrock runs great on my 65. I even tried my fitech. I've switched distributors. Still the same issue.
I'll start with cranking it up to TDC on the compression stroke and see where the distributor points to.
Then probably pull the timing cover to make sure it hasn't skipped a tooth.
After that, I'll pull the valve covers and make sure all the valves fully open and close.

LostMy65 · 02-09-2022, 04:00 PM

Engine is still a clean engine.

**cwcarpenter98** · 02-09-2022, 04:09 PM

Always good to see no sludge when you open one up

66-PMD-GMC · 02-10-2022, 07:57 PM

Weak valve springs can cause backfire
Just sayin'

LostMy65 · 05-10-2022, 07:43 PM

Did a compression test. #6 is about 10 psi less than the others.
I squirt some oil in there and it's still the same. Sounds to me like a valve issue with #6.
.
I put all new plugs and wires on as my last check for the back fire issue.
But it makes no sense to dump money into gm Goodwrench heads, so I'll either pull them and try some lapping or buy a nicer set.

LostMy65 · 05-11-2022, 08:42 PM

With the new plugs and wires it fired right up. Dialed in the timing and very smooth running. I revved it up to about 1500 and not an issue.
I'll probably check the compression again on #6 to see if running it for awhile changed anything. The motor had been sitting for awhile without running.

LostMy65 · 05-13-2022, 10:49 PM

Installed a Carter P4070 inline electric fuel pump as a primer pump.
I was looking for an electronic pump to prime my edelbrock 1406 carb so i wouldn't have to crank and crank just to fill the bowls before it would start.

Turn it on just long enough to fill the bowls.
Start the motor and turn it off.
Works great.

**cwcarpenter98** · 05-13-2022, 10:51 PM

So the new plugs and wires fixed the backfire issue completely, yes?

Sounds like your starter is going to be happier too

LostMy65 · 05-13-2022, 11:00 PM

Quote:

Originally Posted by cwcarpenter98

So the new plugs and wires fixed the backfire issue completely, yes?

Sounds like your starter is going to be happier too

Yes, runs great now.

**cwcarpenter98** · 05-13-2022, 11:50 PM

Good deal! Glad you were able to figure it out

LostMy65 · 05-14-2022, 03:43 PM

Saving this for later.
DIY Alignment
http://67-72chevytrucks.com/vboard/s...d.php?t=399479

LostMy65 · 06-18-2022, 05:03 PM

If any of you have been following this thread and my 65 thread, you'll know that I change directions a lot.
I have had my 65 back for I think 10 years now and I still haven't got all the upgrades I wanted to do to it done. So, my latest direction is to move my 65 cab and front clip over to this 66. The 66 already has power steering, power disc brakes, a 14 bolt, and a low mileage 350.
The whole downside to the 66 is how bad of shape the cab was in.
That is my goal for this weekend.
I'll load up some pictures a little later.

LostMy65 · 06-18-2022, 07:17 PM

Got 65 my cab off my 62 frame and on to the 66 frame.
From this point forward I'll be posting in my 65 thread any further progress.

03-20-2020, 07:12 PM	#278
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Rebuilt my first carburetor a couple weeks ago. The one on my 66 acted weird. The truck would backfire when I hit the gas, it would also bog. Put the rebuilt one on it today. Man does it run nice. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

03-21-2020, 11:12 PM	#281
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Installed a barden bumper and mocked up the tailgate. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

04-01-2021, 08:19 PM	#282
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Been having trouble with it running rough and backfiring when I rev it up. Idles really nice though. I've swapped out the distributor, I've checked the timing, and I've swapped the carb to the fitech from my 65, and still acts exactly the same. . Next I'm going to check if the timing chain hasn't skipped a tooth. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 Last edited by LostMy65; 04-01-2021 at 09:20 PM.

04-01-2021, 11:30 PM	#283
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,491	Re: My 66 Service Truck Build Thread You've probably already checked, but I did a stupid thing twice on my truck. First time was when I first changed the plug wires. I had two wire right next to each other on the cap switched. Idled fine but couldn't drive it over 1500 rpm because of it backfiring a ton. Second time that happend was after the engine swap and putting an HEI dizzy in. Swapped two plug wires again and had a heck of a time figuring it out because I was certain that I had wired it correctly __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

05-13-2021, 01:07 PM	#285
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Moved it into our other barn. I'm going to tinker on the motor some more and see if I can get it to run nice. It's no fun reaching over to access the motor. Maybe I'll build some scaffolding around the front . But I'll start with doing a compression test and then a leak down test. Depending, I may just pull the front clip off to make tinkering on the motor more enjoyable. I don't mind on my 65 because it's a lot lower. Attached Images __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

02-08-2022, 02:52 PM	#286
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Okay, digging in to this backfiring again. I want to sell it or trade it for an old StarCraft boat. Taking it back down to my house today and will pull off the front clip so I can get access to everything and step through everything again. Not even going to bother with the carb at this time. The Edelbrock runs great on my 65. I even tried my fitech. I've switched distributors. Still the same issue. I'll start with cranking it up to TDC on the compression stroke and see where the distributor points to. Then probably pull the timing cover to make sure it hasn't skipped a tooth. After that, I'll pull the valve covers and make sure all the valves fully open and close. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

02-09-2022, 04:00 PM	#287
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Engine is still a clean engine. Attached Images __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

02-09-2022, 04:09 PM	#288
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,491	Re: My 66 Service Truck Build Thread Always good to see no sludge when you open one up __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

02-10-2022, 07:57 PM	#289
66-PMD-GMC The 60-66 GMC/Pontiac guy.... Join Date: Oct 2010 Location: Apache Junction, Arizona Posts: 1,306	Re: My 66 Service Truck Build Thread Weak valve springs can cause backfire Just sayin' __________________ Building Genuine Pontiac Firepowered cars and trucks for several decades. Why Pontiac?? That's just me daring to be different. Projects.. 63 C10 Short Wheel Base fleetside (The Pro-Street) currently under reconstruction. 440CID 2X4 Pontiac

05-10-2022, 07:43 PM	#290
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Did a compression test. #6 is about 10 psi less than the others. I squirt some oil in there and it's still the same. Sounds to me like a valve issue with #6. . I put all new plugs and wires on as my last check for the back fire issue. But it makes no sense to dump money into gm Goodwrench heads, so I'll either pull them and try some lapping or buy a nicer set. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

05-11-2022, 08:42 PM	#291
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread With the new plugs and wires it fired right up. Dialed in the timing and very smooth running. I revved it up to about 1500 and not an issue. I'll probably check the compression again on #6 to see if running it for awhile changed anything. The motor had been sitting for awhile without running. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

05-13-2022, 10:49 PM	#292
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Installed a Carter P4070 inline electric fuel pump as a primer pump. I was looking for an electronic pump to prime my edelbrock 1406 carb so i wouldn't have to crank and crank just to fill the bowls before it would start. Turn it on just long enough to fill the bowls. Start the motor and turn it off. Works great. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

05-13-2022, 10:51 PM	#293
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,491	Re: My 66 Service Truck Build Thread So the new plugs and wires fixed the backfire issue completely, yes? Sounds like your starter is going to be happier too __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

05-13-2022, 11:50 PM	#295
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,491	Re: My 66 Service Truck Build Thread Good deal! Glad you were able to figure it out __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

05-14-2022, 03:43 PM	#296
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Saving this for later. DIY Alignment http://67-72chevytrucks.com/vboard/s...d.php?t=399479 __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035



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06-18-2022, 05:03 PM	#297
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread If any of you have been following this thread and my 65 thread, you'll know that I change directions a lot. I have had my 65 back for I think 10 years now and I still haven't got all the upgrades I wanted to do to it done. So, my latest direction is to move my 65 cab and front clip over to this 66. The 66 already has power steering, power disc brakes, a 14 bolt, and a low mileage 350. The whole downside to the 66 is how bad of shape the cab was in. That is my goal for this weekend. I'll load up some pictures a little later. __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

06-18-2022, 07:17 PM	#298
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: My 66 Service Truck Build Thread Got 65 my cab off my 62 frame and on to the 66 frame. From this point forward I'll be posting in my 65 thread any further progress. Attached Images __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 Last edited by LostMy65; 06-18-2022 at 07:28 PM.

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