Danfinny Posted May 6, 2014 Author Report Share Posted May 6, 2014 camper removed, rebuilt the Carb ran great on a 15 min drive then crap.... blah 3 Quote Link to comment
jvb5577 Posted May 6, 2014 Report Share Posted May 6, 2014 camper removed, rebuilt the Carb ran great on a 15 min drive then crap.... blah What happened? 1 Quote Link to comment
ggzilla Posted May 6, 2014 Report Share Posted May 6, 2014 alright, so here is the thing... motor is a dog. yes its an auto but it should feel better than it does. timing is on the money it does need a carb but i dont think that is it, because it idles great a little hesitation at part throttle but thats it, in the mid range there is a surge of power if you can call it that lol. so options anyone? eventually i am going to go with a different head and cam for low mid range power, i want to pull my 510 to the track with this truck, and be able to load it up and go wherever i want with the 510 on the back of it. this truck is so original that i dont want to do an eng swap, i could but i dont want to. Won't help. What will help is: * swap to manual transmission 4-spd not 5-spd * put foot down, let rev to 5000 before shifting * fit more torque-multiplying rear gear, which will also keep engine revved up. Double-gain. 4.625 was fitted to 1972-1975 620 with automatic. Newer autos got the more fuel efficient but doggy 4.375. 2 Quote Link to comment
Danfinny Posted May 6, 2014 Author Report Share Posted May 6, 2014 What happened? I don't know, its sucking a lot of air though, so probably need to take it back apart and figure out what failed, cant adjust the idle at all. screw all the way out it still runs, idle mixture screw all the way in and it still runs at like 1000-1200 rpm lol. vacuum leak somewhere. 1 Quote Link to comment
Danfinny Posted May 6, 2014 Author Report Share Posted May 6, 2014 Won't help. What will help is: * swap to manual transmission 4-spd not 5-spd * put foot down, let rev to 5000 before shifting * fit more torque-multiplying rear gear, which will also keep engine revved up. Double-gain. 4.625 was fitted to 1972-1975 620 with automatic. Newer autos got the more fuel efficient but doggy 4.375. it was the Carb causing the issues, it ran up to 70 no problem right after i rebuilt the carb. and ran up no problem was surprised at how hard it was pulling lol 1 Quote Link to comment
dmax6159 Posted May 11, 2014 Report Share Posted May 11, 2014 camper removed, rebuilt the Carb ran great on a 15 min drive then crap.... blah Nice 620 KC. 2 Quote Link to comment
Danfinny Posted May 12, 2014 Author Report Share Posted May 12, 2014 well fixed the carb it was something.to do with the smog stuff, removed it all and no more air sucking.... buuuut.... now i have a #3 misfire, wires are good rotor is good, spark is real good. think my heart stopped and started it again lol... hoping it is a valve lash problem, idles good on 3 cylinders though lol. guess if thats not it ill check compression, fingers crossed. 2 Quote Link to comment
Danfinny Posted April 22, 2015 Author Report Share Posted April 22, 2015 well thought I would update since its been almost a year.. the tired l20 is toast so I plan on committing sacrilege... will post pics when I start the work in a few days here. I sure im going to receive a lot of hate from this but who cares its my truck... 2 Quote Link to comment
Danfinny Posted April 26, 2015 Author Report Share Posted April 26, 2015 Sneak peak... 2 Quote Link to comment
mcordero8 Posted April 26, 2015 Report Share Posted April 26, 2015 Looks like your going all out. She's going to be a beast. Looking forward to following this build. Good luck. 2 Quote Link to comment
Danfinny Posted May 18, 2015 Author Report Share Posted May 18, 2015 Finally finished the new heart. [/url 1 Quote Link to comment
Jester Posted May 18, 2015 Report Share Posted May 18, 2015 4.3, that should do nicely for what you want it to do. 4sp auto? 2 Quote Link to comment
Danfinny Posted May 18, 2015 Author Report Share Posted May 18, 2015 Yeah 700r4.. 1 Quote Link to comment
MYDAILYROUTINE Posted June 4, 2015 Report Share Posted June 4, 2015 Woo hoo! Great job man! :thumbup: 1 Quote Link to comment
DatsunHiLife Posted June 5, 2015 Report Share Posted June 5, 2015 Stylin!!! your stoked. Im rebuilding my 77 king cab myself. 1 Quote Link to comment
Danfinny Posted July 27, 2015 Author Report Share Posted July 27, 2015 Productive day. thanks mydailyroutine aka Eric and Lee for the help. 2 Quote Link to comment
MYDAILYROUTINE Posted July 28, 2015 Report Share Posted July 28, 2015 Anytime buddy. Thanks for the beers and the L20. B) 2 Quote Link to comment
heretic Posted July 28, 2015 Report Share Posted July 28, 2015 GREAT looking truck .......... & those door panels :wub: 3 Quote Link to comment
MYDAILYROUTINE Posted August 1, 2015 Report Share Posted August 1, 2015 The door panels match the seats. This is one beautiful truck, I'm glad Danfinny is the one who got it from me. I would have hated to see this truck get ruined. It is in good hands and can't wait for it to be finished, anytime you need help Dan just give me a call. B) 2 Quote Link to comment
Danfinny Posted September 15, 2015 Author Report Share Posted September 15, 2015 Updating from my phone.. So pics will be in several posts... Installed the mounts.. If I had a chance to do it again I would find the same size stock bolts just longer and stronger... Instructions said drill out the holes... Don't dont donit, u will never get the back bolt in and be able to put a nut on it, there is just not enough clearance, so I will just weld the back side to make up for it. Also the mounts set the engine really low and really far back. I think the stock exhaust manifolds will work just need some messaging on the passenger side. Ok enough talking here are the pics. Quote Link to comment
Danfinny Posted September 15, 2015 Author Report Share Posted September 15, 2015 Quote Link to comment
Danfinny Posted September 15, 2015 Author Report Share Posted September 15, 2015 . Just fits on the driver's side Quote Link to comment
Danfinny Posted September 15, 2015 Author Report Share Posted September 15, 2015 Quote Link to comment
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