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#1 |
Registered User
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Location: Durham, North Carolina
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Re: 71 Cheyenne Rooftop Build
It is a trans-dapt I got from Summit. It is for a LS automatic but worked with the NV3500 as well.
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#2 |
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Re: 71 Cheyenne Rooftop Build
Well I still have the stumbling issue on deceleration and the truck will not run worth a damn with the TPS plugged in. My fans are also not getting a ground from the ECM, I believe they were not turned on by BP. Lastly, as you see below I had to get a tow on my first outing...somewhere along the line I missed that you have to fill the block of a LS directly as if you fill the radiator the cold water just sits behind the thermostat. I assumed it was my new gauge not reading as the coolant was ice cold...ran it several miles with 0 water in the block...hoping I didn't burn my cylinders/heads/blow a head gasket but it appears to run fine now. Will check plugs and oil after I put enough miles on it to get the plugs dirty. She is home now though so that is a win.
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#3 |
hillbilly
Join Date: Apr 2007
Location: hampton,tn
Posts: 459
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Re: 71 Cheyenne Rooftop Build
I would think you would have got water into the block through the water pump. You probably just had an air bubble. How did you know it got hot?
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-1962 C-10 Last edited by 62chevy302; 06-03-2019 at 09:06 PM. |
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#4 |
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Re: 71 Cheyenne Rooftop Build
I figured out the issue, I filled the radiator with coolant. This filled the radiator and the lower hose only as the top hose runs across the top of the radiator (higher than the fill point). I had no coolant in the motor and it was sitting cold against the thermostat since it is on the bottom of the LS motor.
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My Daily Driver Build: http://67-72chevytrucks.com/vboard/s...d.php?t=755668 Last edited by cebra; 06-06-2019 at 10:10 AM. Reason: Correction |
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#5 |
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Re: 71 Cheyenne Rooftop Build
I got my new wheels/tires installed so the suspension rubbing issue is resolved. Resolving issues to make this my DD as I get time.
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#6 |
hillbilly
Join Date: Apr 2007
Location: hampton,tn
Posts: 459
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Re: 71 Cheyenne Rooftop Build
Looks good. What are your fuel trims at?
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-1962 C-10 |
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#7 |
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Re: 71 Cheyenne Rooftop Build
I don't know, is there a scanner/tool I can buy to check my TPS, fuel maps, etc. and turn the fans on (short of paying for HP Tuners)? I would rather fix the issues myself (once I rebuild the motor) than pay a similar price for someone else to tune it for me 1 time.
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#8 |
hillbilly
Join Date: Apr 2007
Location: hampton,tn
Posts: 459
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Re: 71 Cheyenne Rooftop Build
Any scan tool that will display live data will show you all you need. Turning the fans on and off is another story. Will have to have it programmed for that.
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-1962 C-10 |
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#9 |
Registered User
Join Date: Apr 2014
Location: Azle,Texas
Posts: 2,248
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Re: 71 Cheyenne Rooftop Build
How do you like the ride with the low profile tires? Do you still think it sits to low? I know everyone has there opinion on how they want their truck to sit, personally, I like the stance a lot.
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Brian 1972 C10, "Loyd", LWB to SWB, 5.3, L83/6L80e, 4:11 Tru Trac, Air Ride, VA, DD, 20" Coys, 4 wheel disc, A quick LS swap turned into a 6 year frame off resto-mod. |
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#10 |
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Re: 71 Cheyenne Rooftop Build
Some pics as I put some miles on it and resolve drivability issues.
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#11 |
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Join Date: Apr 2014
Location: Azle,Texas
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Re: 71 Cheyenne Rooftop Build
Also remember the last time you drove it, it was a longbed which will ride smoother. I'd love to see it from various angles when you get the chance. Is that sweet tool chest bolted down in the bed?
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Brian 1972 C10, "Loyd", LWB to SWB, 5.3, L83/6L80e, 4:11 Tru Trac, Air Ride, VA, DD, 20" Coys, 4 wheel disc, A quick LS swap turned into a 6 year frame off resto-mod. |
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#12 |
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Re: 71 Cheyenne Rooftop Build
I have put 1,200 miles on the swap thus far after resolving some issues. It still won't run with the TPS hooked up and that may end up being a major expense (bad harness or ECU). Next is tuning/ECU, vintage air (ordered this week), and a lot of body work to hopefully get it into paint in September. After that I will work on redoing the suspension/wheels to make it more feasible to drive ~30K miles per year...I did 36K last year and 42K the year before but hoping to get down to 30K and eventually 25K.
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#13 |
Senior Member
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Location: Berne IN
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Re: 71 Cheyenne Rooftop Build
Looks good- will really look good after paint
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#14 |
Senior Member
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Location: TX
Posts: 1,572
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Re: 71 Cheyenne Rooftop Build
What size tires did you use in front?
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#15 |
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Re: 71 Cheyenne Rooftop Build
The fronts are 245/40/20...I wanted a pretty big rake so I went a lot smaller on the front. I may up these to 245/45/20 but will need to add spacers to do this as they are hitting the fenders turning into parking lots with even a little speed. Eventually going back to 15" Rallys (as I piece them together again) with at least 70 series side walls as I live in a city with constant road construction and I am always in a hurry driving 50mph or so on these busted 35mph roads. I have already ripped my right exhaust off and had that replaced.
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#16 |
Senior Member
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Location: TX
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Re: 71 Cheyenne Rooftop Build
Truck looks great. I was asking about the tires because I ordered the same wheels in 20x10 rear and 20x8.5 front with the 245/45/20 tires on the front. Haven't mounted them yet. The whole truck is apart. I was hoping I wouldn't have rubbing problems. Oh well!
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#17 |
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Re: 71 Cheyenne Rooftop Build
You probably will not have any issues; they cleared for quite some time but my truck is getting very low as the springs keep settling (maybe 2-3" more drop since I first installed them). I suspect it will end up collapsing completely at some point as the CPP springs keep piling on top of each other like they are melting. I will be going with a 2.5" spindle drop/stock springs in front and 3" ECE spring in the rear with Rally wheels once I find another 15x7 and get time to install. I have done a lot of damage to the truck in under 2K miles where it sits now.
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#18 |
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Re: 71 Cheyenne Rooftop Build
I have been working on the truck as I find space but mostly resolving issues from the swap. I blew another of those Jegs premade fuel lines (only one left to replace). It still won't run on the TPS, next steps after having 2 computers tuned is to replace the harness. All the tuners/mechanics that have worked on it are pretty baffled by what is going on.
On more positive notes, I have welded up the blower motor hole and some other spots on the firewall and painted 2/3 of the underhood area now. I installed the Vintage air firewall plate and am working on assembling my vintage air now in my apartment and will install as I get time. Tasks to complete before taking it up to PA to paint it: VA install, get LS running correctly, lots of body work, and raise it back up so I can drive it like I do my current DD.
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#19 |
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Join Date: Jun 2018
Location: Texas
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Re: 71 Cheyenne Rooftop Build
Wow 2-3 inches! That is not good... I hope my brothers springs don't do the same!!
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#20 |
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Join Date: Apr 2014
Location: Azle,Texas
Posts: 2,248
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Re: 71 Cheyenne Rooftop Build
Man it really sucks that you’ve had such a let down with your failed suspension parts. I totally understand the necessity of having a good driving and usable truck, so the change back to good springs and the 15’s is a great solution. I can’t remember if you already have the drop spindles or if you don’t. The truck will look great again and I bet you’re gonna love it. Live and learn... I’ve got several CPP components in my build, but no springs. I’m now on the NO CPP list after seeing what their crappy QC department did to you. Keep us posted man.
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Brian 1972 C10, "Loyd", LWB to SWB, 5.3, L83/6L80e, 4:11 Tru Trac, Air Ride, VA, DD, 20" Coys, 4 wheel disc, A quick LS swap turned into a 6 year frame off resto-mod. |
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#21 |
Registered User
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Location: Durham, North Carolina
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Re: 71 Cheyenne Rooftop Build
I have McCaughys 2.5" drop spindles now which I will leave and just put stock springs on the front so raising it up 2" both front and rear.
I got maybe 2/3 of the firewall done and my VA evaporator installed. I painted my PS fender well satin black which looks a lot better than the flat black. Will add pics as I do more bodywork and install the VA kit.
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#22 |
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Re: 71 Cheyenne Rooftop Build
I got my control panel done and it shined up nicely. I also installed the drain for the evap. Currently I am working on the VA wiring and still cleaning up/painting the underhood area.
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#23 |
Registered User
Join Date: Dec 2005
Location: gilbert arizona
Posts: 48
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Re: 71 Cheyenne Rooftop Build
Enjoyed reading through your build -- you have done a lot! Great ride and even cooler to see you are going to really drive it as a daily driver -- that's awesome!
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#24 |
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Re: 71 Cheyenne Rooftop Build
Thanks, it has been trying to say the least not having a workspace but I am slowly getting there. Making a hard push to finish up metal work to paint it mid-September.
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#25 |
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Re: 71 Cheyenne Rooftop Build
I finally got around to pulling off the bedsides and welding up holes in the wheelwells and putting the original corners back in. This should be the last time the bedsides come off (fingers crossed). I have the Vintage Air half way in but I am struggling with the little rubber nutsert dealios for the condenser, about to just throw a couple pop rivets in there and call that done. I don't see how those nutserts would be any better than rivets tbh. Other than that, lots of cleaning and painting the underhood and hope to cut out the passenger side rocker (again) this Saturday if I can find electricity to borrow/rent. Note the generator in this picture as I have gone to 7 different friends houses and only 1 had enough juice to run my welder but this generator worked very well...if I had room to store it I would buy one and this would solve all my problems.
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