OK, I couldn't resist taking this picture, of Jimmy, and sharing it here on Stovebolt. I have been hauling cow manure to my corn patch again. While so doing, the late afternoon sun was just starting to set behind the old school, in my home town. Take a peek, at the picture, and and enjoy an old farm truck doing a job that counts, with a classy old background. Oh yes, Jimmy didn't miss a beat again this year, no problems hauling the 12 loads of "Sun Shine" to the corn patch. I also hauled 8 loads of fill dirt to fix up the road that enters my farm. I haven't gotten to the rebuild of the 302 yet that I have stored in the shop. The original 248 is working real good in the dump truck for now. My son has a 1950 GMC 3/4 ton with a bad 228 engine. I think I will give him the 248 out of the dump truck, to put his truck back on the road, when I convert over to the 302. I would like to locate an aftermarket 2 X 1 intake for use on the 302. Does anyone else have some good season pictures of their trucks to post? Al
Last edited by 69Cuda; 11/24/20185:54 PM. Reason: removed question asking for parts. Belongs in a post in parts wanted
Hello Rich, Yes, when I bought the truck, he had no hood and I had a spare Chevrolet hood. I have just gotten confirmation that the new reproduced GMC side hood trim are long enough that I can install them over the Chevrolet vent louvers and have it look the part of a correct GMC hood. It is a hoot to actually run Jimmy for true dump truck work. My neighbors all come out to watch me. I also enjoy driving the original crash box transmission. I must admit that I am better shifting down that shifting up. I have determined that I need just a little bit more patience to get the road speed in line with the engine speed when going up the gears. Going down I clutch, let the speed drop a bit then give a little punch on the gas pedal then slip right into 3rd gear or 2nd gear as needed. Al
I grew up on a '46 Chev 1 ton pickup. It also had the 4 speed crash box. I found when upshifting I did not need to rev the engine when I double clutched. Most of the time it went right in. (The operative word here is MOST!)
..I found when upshifting I did not need to rev the engine when I double clutched..
That's correct, On an upshift the engine RPM in the next gear will be lower than it was in the previous gear, so double clutch but let the engine RPM fall (to match expected RPM in the next gear at given road speed) with clutch out in neutral before clutching again and sticking it in the higher gear.
Trivia update.... The school in the background of the above picture was built in 1884. Al
Really nice backdrop, good pic
1953 Chevrolet 3100 261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done In the DITY Gallery Video of the 261 running
1964 GMC 1000 305 Big Block V6, sm420, the next cab off restoration
Has anyone seen an aftermarket I X 2 intake manifold proper for the GMC engines? I see on EBAY more than a few of the larger series multi carb intake manifolds for the larger series GMC and I-H engines (bigger series than the 248-27-302). Al
Grigg, I will give your shifting method the next time out. I have always not used neutral as part of my shifting up method and I do catch more gear than I want (grind). Thanks for sharing what works for you. Al
Alan