pearljam724
Well-Known Member
I have a 72 - 360. I’m wanting to know if all small blocks share the same crankshaft ? To my understanding the only difference the 360 has in reference to parts is a different oil pan and heads.
I have a 72 - 360. To my understanding the only difference the 360 has in reference to parts is a different oil pan and heads.
Thanks guys. I’ve been chasing a driveline vibration at 70mph. Addressed many things to no avail. Only thing I haven’t addressed yet. Is driveshaft balance and tranny mount. Which I ll do both soon. If that’s not it. The crank may be bent or out of balance. That’s the only other option left I see. But, nothing vibrates when car is in motion under 70. Does anyone sell a 360 crank new for a 72 engine ?
Thanks guys. I’ve been chasing a driveline vibration at 70mph. Addressed many things to no avail. Only thing I haven’t addressed yet. Is driveshaft balance and tranny mount. Which I ll do both soon. If that’s not it. The crank may be bent or out of balance. That’s the only other option left I see. But, nothing vibrates when car is in motion under 70. Does anyone sell a 360 crank new for a 72 engine ?
Very good point. Was chasing a vibration myself long time ago that turned out to be a rear tire out of balance...And don't discount wheels/ tires out of true/ out of balance, BOTH FRONT AND REAR
Thanks guys. I’ve been chasing a driveline vibration at 70mph. Addressed many things to no avail. Only thing I haven’t addressed yet. Is driveshaft balance and tranny mount. Which I ll do both soon. If that’s not it. The crank may be bent or out of balance. That’s the only other option left I see. But, nothing vibrates when car is in motion under 70. Does anyone sell a 360 crank new for a 72 engine ?
Hmmm.. How you gonna fix that? I'd check tires for a 70 wiggle.Also check your u-joint phasing, that could also be a possible cause of vibration, one more thing to check
Hmmm.. How you gonna fix that? I'd check tires for a 70 wiggle.
Only if you have a 2 piece driveshaft with a slip yoke in the middle. Trucks yes, cars no unless someone cut a yoke off and welded it back on in the wrong place.Also check your u-joint phasing, that could also be a possible cause of vibration, one more thing to check
We had 4 new tires mounted and balanced at home and drive to Utah, we experienced a vibe at 80 but it went away down at 75 (?) so when we got to St. George, we took it to the same chain and had them look at it. Both rears were out of balance and one had a broken belt (big dimple on side of new tire side wall.."uh, is this supposed to look like this?" ...Nope. Did we toss a weight too? Doubtful, as the weights were stick on's inside the rim and there was no where for them to go. So we got a new tire and a balance job under warranty. They were very nice about it too. Butter smooth on way home until we hit the crappy CA freeways, then it was just loud. We pay the most in fuel taxes but have the shittiest freeways? Oh yeah, I forgot who's running the show here for the last 30 years.....Just because the tires are new and balanced doesn't mean they are not the problem. I just worked on my friends Lexus, he said it has a thump from the rear at 80 mph. I removed the rear wheels, 1 wheel was bent, and 1 tire was bad. He just had 4 new tires installed. Both rear tires were at least 4 oz. out of balance each.
Only if you have a 2 piece driveshaft with a slip yoke in the middle. Trucks yes, cars no unless someone cut a yoke off and welded it back on in the wrong place.
Only if you have a 2 piece driveshaft with a slip yoke in the middle. Trucks yes, cars no unless someone cut a yoke off and welded it back on in the wrong place.
Exactly. and you better line the yokes up or you will get a vibration you can't balance out.I use to make pump driveshafts for tanker trucks. Would measure them, cut, put the end on, weld them, install and test.
We called it timing the driveshaft when you put the end on. We lined it up straight with the other end.
Exactly. and you better line the yokes up or you will get a vibration you can't balance out.