View Single Post
Old 02-02-2019, 02:31 PM   #135
Vintage Windmills
Vintage 4x4s
 
Vintage Windmills's Avatar
 
Join Date: Sep 2010
Location: Prior Lake, MN
Posts: 4,305
Re: K30 Downgrade to Cummins Project

Quote:
Originally Posted by Dieselwrencher View Post
Does your truck have a factory tach currently? On my 72 I haven't gotten my tach done but I am using a dodge pick up sensor from a 92-early 98. I'm also using that style balancer that has 2 extra grooves cut into it so it will pick up the proper pulse for the gm tach. You can then wire the pick up sensor to your truck harness but you have to add a 1k ohm resistor to the pick up sensor harness so the tach will work correctly.

Or you can get a signal conversion box from dakota digital or even off ebay.
Thanks Ryan. Not a factory tach truck. There's a Sunpro tach that was installed for the BBC. It reads pretty high for a diesel. I'm mainly trying to figure out the pick up sensor. It seems I may be able to tap into the alternator rectifier, add a different damper with more grooves, or just add a 4pulse ring like this: http://www.destroked.com/mobile/prod_tach_kits.php Where did you mount your pick up sensor?
Quote:
Originally Posted by Dieselwrencher View Post
AC compressor mount...... Here is a link to a thread that has the part numbers listed in it if you need them. If you go this route and let me know and I'll get you some prices if you'd like.

https://www.ford-trucks.com/forums/1...bracket-2.html

That DCS one does allow you to use your stock dodge alternator and the price isn't horrible. On the lower inlet you could make your own. Make a flat flange that bolts to the new mount and then use 90s and cut/weld to get your angle you need. On my Corvette I cut up a dodge bracket and welded a 90* bend on it and it's been on there since.
Good reference on the part numbers, I need to compare the options today while looking at where the boost and air intake tubes will run.
Attached Images
 
__________________

67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades)
67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore )
86 CHV K30 502 th400, apple red NEW
71 CHV K20 350 SM465, ochre (saved work truck)
71 CHV K20 292 SM465, white, tach, PTO, (future project)
72 CHV K20 350 350th, medium blue (project stocker)
01 CHV K2500hd crew, indigo blue

^3 dont run and the others don't see winter either
'86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649
'71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642
'72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

Last edited by Vintage Windmills; 02-02-2019 at 03:45 PM.
Vintage Windmills is offline   Reply With Quote