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#676 |
Registered User
Join Date: May 2008
Location: Spokane, Washington
Posts: 596
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Re: My 78 K15 High Sierra build - Fish Tremble
I fought the firing of my new crate 350, resetting TDC and distributor numerous times. Found my balancer for an 86 has timing mark set at 12 o'clock but the crate 350 timing tab is at 2 o'clock. Finally remarked the balancer and it lit off. Pulling my hair and concerned the whole time about ending up with a flat cam.
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#677 |
Senior Member
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Location: Tomball, Texas
Posts: 1,592
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Re: My 78 K15 High Sierra build - Fish Tremble
Hmm, bought a new balancer and pointer from Jegs at the same time as I was ordering the engine. I hope the guy helping me knew enough to put the correct parts on the order.
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Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ![]() 2001 GMC Sierra K2500 |
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#678 |
Registered User
Join Date: May 2011
Location: Syracuse, Utah
Posts: 1,929
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Re: My 78 K15 High Sierra build - Fish Tremble
If it will run you are close, advance or retard your timing a little whichever makes it run/start easier by ear. Look and see where your vacuum advance ends up you could be off a tooth or two. Once satisfied, break out the timing light, disconnect your vacuum advance and block off any vacuum leaks. Get the timing closer, this stage should tell you if your balancer and or mark are wonky because it’ll be off and run poorly if you try and adjust to spec.
After it’s been running and your cam is broken in look into adjusting the idle mixture (w/vacuum gauge or by ear) then retime it again (double check your settings), carb adjustments again. After a couple rounds of this, it should run pretty good for you.
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Brett ![]() 67 Camaro SS Build:http://67-72chevytrucks.com/vboard/s...d.php?t=751594 72 Cheyenne/10 Super 115" Fleetside (Waiting it's turn.) 72 Cheyenne/K30 Super 133" DRW SOLD Build:http://67-72chevytrucks.com/vboard/s...d.php?t=645614 YouTube: https://www.youtube.com/@6dee7-7dee2 |
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#679 |
Registered User
Join Date: Jun 2004
Location: El Lago, TX
Posts: 1,668
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Re: My 78 K15 High Sierra build - Fish Tremble
Congrats on the new engine! I agree that it's too nice a truck for an old wore out motor.
![]() I hope you have a heater in your shop so you can go out there today and get her tuned! ![]() |
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#680 |
Senior Member
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Location: Tomball, Texas
Posts: 1,592
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Re: My 78 K15 High Sierra build - Fish Tremble
Thanks for the pointers Brett! No heater in the shop Greenlee. It was 21 degrees when I got up this morning - I wasn't expecting it to be that cold either! I'm hoping to get back to it this weekend, but the wife's 2002 Tahoe won't crank with a brand new battery so have to figure that one out first. Working on that out in the driveway - just have to bundle up!
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Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ![]() 2001 GMC Sierra K2500 |
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#681 |
Registered User
Join Date: May 2011
Location: Syracuse, Utah
Posts: 1,929
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Re: My 78 K15 High Sierra build - Fish Tremble
No problem hope it helps, did you get your Tahoe going?
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Brett ![]() 67 Camaro SS Build:http://67-72chevytrucks.com/vboard/s...d.php?t=751594 72 Cheyenne/10 Super 115" Fleetside (Waiting it's turn.) 72 Cheyenne/K30 Super 133" DRW SOLD Build:http://67-72chevytrucks.com/vboard/s...d.php?t=645614 YouTube: https://www.youtube.com/@6dee7-7dee2 |
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#682 |
Senior Member
![]() Join Date: Jul 2009
Location: Tomball, Texas
Posts: 1,592
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Re: My 78 K15 High Sierra build - Fish Tremble
Well, I spent a lot of time figuring out how to troubleshoot the Tahoe's problem and decided it was a bad starter. Got voltage to it when the key was in START, but nothing happened, not even clicks. Then discovered that I couldn't get the starter out. I couldn't even back the nose out of the bell-housing. Started reading about what I'd have to remove to get some space and decided this was a job I was willing to pay someone else for.
Between that, taking down Christmas lights and mowing the yard (yes - mowing, the weeds never take a break down here) I only got a little time on my truck. Basically started over getting #1 to TDC, setting in the distributor etc. I can now get it to idle without feeding it throttle, with the distributor positioned around the center of its range for rotation so that's good. It isn't running smooth though and it is dumping a lot of unburned fuel out the tailpipes so I have a ways to go still. Minor timing adjustments don't help enough. I can imagine that I've fouled the plugs by now. I think my next steps will be to research setting the carb to recommended starting points on adjustables, and cleaning the plugs again.
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Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ![]() 2001 GMC Sierra K2500 |
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#683 |
Registered User
Join Date: May 2011
Location: Syracuse, Utah
Posts: 1,929
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Re: My 78 K15 High Sierra build - Fish Tremble
Wow, from not enough fuel to too much fuel, CRAP! Sounds like a known good carb would have been helpful right about now.
Here is a link that might be helpful. http://www.superchevy.com/how-to/eng...ike-it-should/
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Brett ![]() 67 Camaro SS Build:http://67-72chevytrucks.com/vboard/s...d.php?t=751594 72 Cheyenne/10 Super 115" Fleetside (Waiting it's turn.) 72 Cheyenne/K30 Super 133" DRW SOLD Build:http://67-72chevytrucks.com/vboard/s...d.php?t=645614 YouTube: https://www.youtube.com/@6dee7-7dee2 |
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#684 |
Registered User
Join Date: Jun 2004
Location: El Lago, TX
Posts: 1,668
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Re: My 78 K15 High Sierra build - Fish Tremble
What type of new carb did you buy? I hate to say it, but I've run brand new Edelbrock and Holley carbs before and could never get the truck running good until I switched back to a regular old rebuilt Quadrajet.
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#685 |
Senior Member
![]() Join Date: Jul 2009
Location: Tomball, Texas
Posts: 1,592
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Re: My 78 K15 High Sierra build - Fish Tremble
I got a rebuilt QuadraJet as well, so I should be good to go! Been watching a bunch of videos on rebuilding, troubleshooting and tuning Quadrajets done by a guy going by whosaidtyler this week so should be fully armed to go out this weekend and get this thing tuned in.
BTW, these are a very good series of videos. The guy obviously knows what he's talking about and does a very good (and thorough) job of explaining things.
__________________
Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ![]() 2001 GMC Sierra K2500 |
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#686 |
Registered User
Join Date: Apr 2011
Location: .
Posts: 3,104
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Re: My 78 K15 High Sierra build - Fish Tremble
There are tons of great how vids on Youtube.
Will have to check it out. |
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#687 | |
Senior Member
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Location: Tomball, Texas
Posts: 1,592
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Re: My 78 K15 High Sierra build - Fish Tremble
I'll obviously never make a living as a film director, but here it is!
https://youtu.be/hSFIUS7NR2o Quote:
Aside from adjusting the choke to force it to stay open (I don't have the choke stove stuff to hook up the hot air choke), I think the carb shop just put all the adjustment screws in far enough to catch a few threads. Idle and mixture screws all needed to go in at least a dozen turns to get close. Then some back and forth fiddling between carb and timing got it running pretty well. I LOVE the sound of this exhaust, and so stoked to know I'm just a few steps from being able to drive this thing ![]()
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Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ![]() 2001 GMC Sierra K2500 |
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#688 |
Registered User
Join Date: May 2011
Location: Syracuse, Utah
Posts: 1,929
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Re: My 78 K15 High Sierra build - Fish Tremble
Oh yeah, sahweet! You are da man!
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Brett ![]() 67 Camaro SS Build:http://67-72chevytrucks.com/vboard/s...d.php?t=751594 72 Cheyenne/10 Super 115" Fleetside (Waiting it's turn.) 72 Cheyenne/K30 Super 133" DRW SOLD Build:http://67-72chevytrucks.com/vboard/s...d.php?t=645614 YouTube: https://www.youtube.com/@6dee7-7dee2 |
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#689 |
Registered User
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
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Re: My 78 K15 High Sierra build - Fish Tremble
I think it sounds great too! Your on your way to be driving it real soon!
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Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's |
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#690 |
Senior Member
![]() Join Date: Jul 2009
Location: Tomball, Texas
Posts: 1,592
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Re: My 78 K15 High Sierra build - Fish Tremble
Thanks! I actually completed another major (to me) milestone on the truck this weekend. I think that I am finally, finally done sanding on this truck. Over the last few weeks I've sanded off my 1st attempt at touch up paint which didn't work out and redone the touchups using a different method. Came out better the second time but had to sand the clear to blend. Finally got that done. Just need to buff the front fenders and hood and I should be able to get the exterior done. My goal is to finish that over the next 2 weeks.
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Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ![]() 2001 GMC Sierra K2500 |
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#691 |
Registered User
Join Date: Jun 2006
Location: Utah
Posts: 1,562
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Re: My 78 K15 High Sierra build - Fish Tremble
How sweet! Listening to that baby run makes me want to get out and get working on mine! I will be working on some small items today, so hopefully by the end of the month I can attempt to fire.
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#692 |
Registered User
Join Date: Feb 2012
Location: Salado, Texas
Posts: 1,418
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Re: My 78 K15 High Sierra build - Fish Tremble
Looking great. Truck sounds good!
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Just trying to figure this out... 1970 SWB Step-Side http://67-72chevytrucks.com/vboard/s...d.php?t=552980 1970 LWB http://67-72chevytrucks.com/vboard/s...d.php?t=584499 1970 SWB One Owner Step Side 6.0 LY6/6L90 http://67-72chevytrucks.com/vboard/s...d.php?t=617630 Junkyard's 1971 short wide http://67-72chevytrucks.com/vboard/s...86#post7531186 |
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#693 | |
Senior Member
![]() Join Date: Jul 2009
Location: Tomball, Texas
Posts: 1,592
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Re: My 78 K15 High Sierra build - Fish Tremble
Quote:
Thanks! I've finally finished the cut & buff on the front fenders and hood after having done it once. I had touchups to do on the fenders and repainted the hood. Any case, the front end is finally going back together. I'm not sure what this grille is from. It might be an old aftermarket one. Not crazy about it but haven't found one I like better for a price I can swallow. I'd have mounted the hood but my help (2 of my grown kids) didn't show up until right at dinner time - impeccable timing as usual ![]()
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Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ![]() 2001 GMC Sierra K2500 |
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#694 |
Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: My 78 K15 High Sierra build - Fish Tremble
You know you need to be proud of yourself right? You have done an amazing job on this truck!
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90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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#695 |
Registered User
Join Date: Feb 2012
Location: Salado, Texas
Posts: 1,418
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Re: My 78 K15 High Sierra build - Fish Tremble
I second this...Rick has done an amazing job. It almost looks like driving time!
__________________
Just trying to figure this out... 1970 SWB Step-Side http://67-72chevytrucks.com/vboard/s...d.php?t=552980 1970 LWB http://67-72chevytrucks.com/vboard/s...d.php?t=584499 1970 SWB One Owner Step Side 6.0 LY6/6L90 http://67-72chevytrucks.com/vboard/s...d.php?t=617630 Junkyard's 1971 short wide http://67-72chevytrucks.com/vboard/s...86#post7531186 |
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#696 | ||
Senior Member
![]() Join Date: Jul 2009
Location: Tomball, Texas
Posts: 1,592
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Re: My 78 K15 High Sierra build - Fish Tremble
Quote:
Quote:
1) Still haven't bled the brakes, but I have bench bled the master 2) Haven't figured out why it won't start from the key - have to use the remote start switch 3) Have to find a suitable bucket to sit on until I get the bench in ![]()
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Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ![]() 2001 GMC Sierra K2500 |
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#697 |
Registered User
Join Date: May 2011
Location: Syracuse, Utah
Posts: 1,929
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Re: My 78 K15 High Sierra build - Fish Tremble
Congrats on the DONE stamp for paint, looks great Rick!
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Brett ![]() 67 Camaro SS Build:http://67-72chevytrucks.com/vboard/s...d.php?t=751594 72 Cheyenne/10 Super 115" Fleetside (Waiting it's turn.) 72 Cheyenne/K30 Super 133" DRW SOLD Build:http://67-72chevytrucks.com/vboard/s...d.php?t=645614 YouTube: https://www.youtube.com/@6dee7-7dee2 |
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#698 |
Second Chance Program
Join Date: Jun 2006
Location: Portland, OR
Posts: 2,642
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Re: My 78 K15 High Sierra build - Fish Tremble
Neutral safety switch wired right?
__________________
90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work. |
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#699 |
Senior Member
![]() Join Date: Jul 2009
Location: Tomball, Texas
Posts: 1,592
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Re: My 78 K15 High Sierra build - Fish Tremble
Thanks Brett! Got to admit I had a little celebration when I realized I was DONE sanding on this truck. Between body work, block sanding, sanding parts back down for repaint, sanding the clear, sanding the clear again after repaint, etc. I don't even want to imagine the hours I put in on that
![]() I'm thinking it might be that, or else I didn't get the ignition gear cam(?) positioned right when I had the column apart. I did buy a NOS neutral safety switch off ebay but didn't test it before putting it in. I'll get it figured out, but my priority has been to get the exterior finished.
__________________
Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ![]() 2001 GMC Sierra K2500 |
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#700 | |
Registered User
Join Date: Feb 2012
Location: Salado, Texas
Posts: 1,418
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Re: My 78 K15 High Sierra build - Fish Tremble
Quote:
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Just trying to figure this out... 1970 SWB Step-Side http://67-72chevytrucks.com/vboard/s...d.php?t=552980 1970 LWB http://67-72chevytrucks.com/vboard/s...d.php?t=584499 1970 SWB One Owner Step Side 6.0 LY6/6L90 http://67-72chevytrucks.com/vboard/s...d.php?t=617630 Junkyard's 1971 short wide http://67-72chevytrucks.com/vboard/s...86#post7531186 |
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