Could I just bolt in another crank without machining?
Thread Starter
On The Tree
Joined: Nov 2015
Posts: 108
Likes: 3
Could I just bolt in another crank without machining? I ended up with a early 6.0 long crank i think ( it won’t turn over by hand with the tranny bolted up and they say if there is 3/4” sticking from the seal it’s long)
can I bolt in a short crank without machining,or could it be done without takeing out the pistons? Put in new bearings with it ? Hope I didn’t crush anything in the tranny when I bolted it up, funny it bolted in ok for haveing a extra 1/2” of crank. What a mess!
can I bolt in a short crank without machining,or could it be done without takeing out the pistons? Put in new bearings with it ? Hope I didn’t crush anything in the tranny when I bolted it up, funny it bolted in ok for haveing a extra 1/2” of crank. What a mess!
TECH Senior Member
Joined: Jun 2016
Posts: 22,303
Likes: 3,619
From: Central Cal.
The extra 1/2" of length only comes into play when bolting up the flywheel and tranny.
IF the new crank is in new or nearly new condition, and
IF you put in all new main and rod bearings, it should go together and run without issue.
IF the new crank is in new or nearly new condition, and
IF you put in all new main and rod bearings, it should go together and run without issue.
I ended up with a early 6.0 long crank i think ( it won’t turn over by hand with the tranny bolted up and they say if there is 3/4” sticking from the seal it’s long)
can I bolt in a short crank without machining,or could it be done without takeing out the pistons? Put in new bearings with it ? Hope I didn’t crush anything in the tranny when I bolted it up, funny it bolted in ok for haveing a extra 1/2” of crank. What a mess!
can I bolt in a short crank without machining,or could it be done without takeing out the pistons? Put in new bearings with it ? Hope I didn’t crush anything in the tranny when I bolted it up, funny it bolted in ok for haveing a extra 1/2” of crank. What a mess!
TECH Apprentice
Joined: Aug 2018
Posts: 383
Likes: 108
You bolted up a long crank LQ4 w/o realizing it was the long crankshaft? Yikes!
I'm surprised it even bolted up without cracking the bellhousing. But you didn't run it, correct? You said it won't even spin over by hand. If you could determine that the transmission pump wasn't damaged, I suppose just order that custom torque converter for this application and move on. That way you don't have to mess with engine internals, especially if it's a runner.
But I would honestly remove the transmission pan, valve body and pump to inspect before anything else. Or take it to a transmission shop for inspection. Is it a known good transmission? What transmission is it anyway?
I'm surprised it even bolted up without cracking the bellhousing. But you didn't run it, correct? You said it won't even spin over by hand. If you could determine that the transmission pump wasn't damaged, I suppose just order that custom torque converter for this application and move on. That way you don't have to mess with engine internals, especially if it's a runner.
But I would honestly remove the transmission pan, valve body and pump to inspect before anything else. Or take it to a transmission shop for inspection. Is it a known good transmission? What transmission is it anyway?
