Winter is Coming
Time to think about winterizing your Bolt.
A good Tech Tip WINTERIZING YOUR TRUCK including a link back to the Forums for additional tips.
The intake valves that were in my 302 head when I got it had an OD of 1.856". When I had the head rebuilt by Texas Engine Machine in Llano, they replaced the intakes with a small block Chevy intake valves that measured 1.841", but still more than covered the seat area in the head. Sorry, I don't know part numbers or maker of the valves.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12 '52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
A lot of 302 GMC engines had rotating valves. If you have them, you will need new valves, springs, spring retainers and keepers. The rotating valves were difficult to adjust and required a special tool. We used them back in the day, but they are not necessary for the way vehicles are driven today. The rotating valves can be identified by the tapered groove for the keeper. I have a bunch of these left over from over 60 years ago and they are scrap. Attached is a photo of a rotating valve.
A good Tech Tip
