New 68 step side owner - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bigblock1968 · 12-29-2013, 06:37 PM

Hey guys! I'm glad I found this website because I'm going to have a lot of questions I'm sure you guys have already answered. But I started this thread to introduce myself and my new project and hopefully I can use it for advice if I gets stuck. Heres what I found, it's a 1968 c10 step side that has had what I believe is a 78 454 transplanted with a th400 behind it. I just got this truck and plan to get it running and street legal ASAP then in a few years start a frame up resto with my son.

Bigblock1968 · 12-29-2013, 06:47 PM

So far I have been working on the engine, since it hasn't been on the road since 2002, I tried to take as many precautions I knew to ease startup. I pulled the plugs and squirted marvels mystery oil in each cylinder and let that sit over night, blew that out, and then started it in an electronic fuel pump out of a plastic gas tank. It started fairly well and since then I have flushed the gas tank, replaced the fuel pump,oil,starter, and it is running on its own power!
I'm pretty sure it needs a tune up though and here is my first question for you guys.

It has a popping that is randomly heard from the exhaust at idle and revved up... Someone told me this is from the valve springs being sitting for so long. Is this true? Can I fix this with a new set of springs? I plan on getting all the regular fixes first like plugs, wires, cap, rotor,and possibly a new carb anyway but I'm just trying to set my priorities.

nds1968 · 12-29-2013, 07:06 PM

Welcome to the board

Looks like your off to a good start. We need more pics. I've always wanted a 68 stepside

Nate

Bigblock1968 · 12-29-2013, 07:28 PM

Here's the engine the day I got it.

Bigblock1968 · 12-29-2013, 07:32 PM

I'm in the middle of working on the brakes right now to get it road worthy. But it looks like I'm gonna have to change all the master and wheel cylinders to get it fixed

**LockDoc** · 12-29-2013, 08:28 PM

-
The popping could be the valves hanging up, bad timing chain, timing off, vacuum leak, wires or cap cross firing, or a multitude of other things... The first thing I would do is get a can of SeaFoam and run through it. Just follow the directions.

LockDoc

JHT67 · 12-29-2013, 10:33 PM

I like it, you should give us some more back ground on how you came to own it, and of course more pics.

68 Longbed Dan · 12-30-2013, 04:59 PM

Beautiful!

The brake stuff is definately a must anyways. If you're going for roadworthy that is

. I remember driving mine in high school, and spun out through an intersection in the rain due to very very poor four wheel drum brakes lol.

68shortstep · 12-30-2013, 05:34 PM

x2 on the "brakes are important" comment.

I spun mine out at the first intersection I approached at 50 miles an hour, when by (bad) luck, one of the wheel cylinders leaked in the rear (caused by my own defective work) --- and brake fluid had ruined the new brake shoes. Wet pavement didn't help any.

By (good) luck, I didn't hit anybody. But it sure was "white knuckle flying" & "damp shorts landing" time.

12-29-2013, 06:37 PM	#1
Bigblock1968 Registered User Join Date: Dec 2013 Location: Stephenvi Posts: 4	New 68 step side owner Hey guys! I'm glad I found this website because I'm going to have a lot of questions I'm sure you guys have already answered. But I started this thread to introduce myself and my new project and hopefully I can use it for advice if I gets stuck. Heres what I found, it's a 1968 c10 step side that has had what I believe is a 78 454 transplanted with a th400 behind it. I just got this truck and plan to get it running and street legal ASAP then in a few years start a frame up resto with my son. Attached Images

12-29-2013, 06:47 PM	#2
Bigblock1968 Registered User Join Date: Dec 2013 Location: Stephenvi Posts: 4	Re: New 68 step side owner So far I have been working on the engine, since it hasn't been on the road since 2002, I tried to take as many precautions I knew to ease startup. I pulled the plugs and squirted marvels mystery oil in each cylinder and let that sit over night, blew that out, and then started it in an electronic fuel pump out of a plastic gas tank. It started fairly well and since then I have flushed the gas tank, replaced the fuel pump,oil,starter, and it is running on its own power! I'm pretty sure it needs a tune up though and here is my first question for you guys. It has a popping that is randomly heard from the exhaust at idle and revved up... Someone told me this is from the valve springs being sitting for so long. Is this true? Can I fix this with a new set of springs? I plan on getting all the regular fixes first like plugs, wires, cap, rotor,and possibly a new carb anyway but I'm just trying to set my priorities.

12-29-2013, 07:06 PM	#3
nds1968 Registered User Join Date: Mar 2006 Location: Pittsburgh Posts: 1,694	Re: New 68 step side owner Welcome to the board Looks like your off to a good start. We need more pics. I've always wanted a 68 stepside Nate __________________ Nate 1967 short fleet Project Blue Goose 'If it don't bounce back... heeheehee you go hungry!" Blues Brothers

12-29-2013, 07:28 PM	#4
Bigblock1968 Registered User Join Date: Dec 2013 Location: Stephenvi Posts: 4	Re: New 68 step side owner Here's the engine the day I got it. Attached Images

12-29-2013, 07:32 PM	#5
Bigblock1968 Registered User Join Date: Dec 2013 Location: Stephenvi Posts: 4	Re: New 68 step side owner I'm in the middle of working on the brakes right now to get it road worthy. But it looks like I'm gonna have to change all the master and wheel cylinders to get it fixed

12-29-2013, 08:28 PM	#6
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,815	Re: New 68 step side owner - The popping could be the valves hanging up, bad timing chain, timing off, vacuum leak, wires or cap cross firing, or a multitude of other things... The first thing I would do is get a can of SeaFoam and run through it. Just follow the directions. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

12-29-2013, 10:33 PM	#7
JHT67 Registered User Join Date: Jan 2010 Location: columbus, ohio Posts: 972	Re: New 68 step side owner I like it, you should give us some more back ground on how you came to own it, and of course more pics. __________________ Going through life's daily grind, I can feel the effects of this physical body's fleeting days, But with a young spirit I look toward a brighter day, knowing that in the eyes of eternity, I am but a babe in the arms of my Lord.........

12-30-2013, 04:59 PM	#8
68 Longbed Dan Registered User Join Date: Feb 2012 Location: California Posts: 75	Re: New 68 step side owner Beautiful! The brake stuff is definately a must anyways. If you're going for roadworthy that is . I remember driving mine in high school, and spun out through an intersection in the rain due to very very poor four wheel drum brakes lol. __________________ Dan 1968 Longbed Stepside C10

12-30-2013, 05:34 PM	#9
68shortstep Looks good at 20-ft ..... Join Date: Apr 2005 Location: Mtn Home, AR Posts: 707	Re: New 68 step side owner x2 on the "brakes are important" comment. I spun mine out at the first intersection I approached at 50 miles an hour, when by (bad) luck, one of the wheel cylinders leaked in the rear (caused by my own defective work) --- and brake fluid had ruined the new brake shoes. Wet pavement didn't help any. By (good) luck, I didn't hit anybody. But it sure was "white knuckle flying" & "damp shorts landing" time.



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