A518 swap

[360madness]

New to the group here any advise/help would be great. Installed a 46rh/a518 now I get a vibration in park and neutral.
It is a 360 magnum turn in a 408 stroker Balanced. Flexplate is a 10242 balanced with motor. Torque converter is a boss hog 51903.

 

[Bobzilla]

New to the group here any advise/help would be great. Installed a 46rh/a518 now I get a vibration in park and neutral.
It is a 360 magnum turn in a 408 stroker Balanced. Flexplate is a 10242 balanced with motor. Torque converter is a boss hog 51903.

Who balanced the crankshaft? Ask them if it needs a neutral flex plate. That is likely. Even the cast crankshafts are sometimes balanced neutral in the rear when it’s four inch stroke.

 

[360madness]

He did say I needed a neutral balanced torque converter and there was no weight stuck on it.

 

[Bobzilla]

You have to ask them specifically if they balanced it with that 10242. Probably not. Probably needs a neutral flex plate along with your neutral converter.

 

[360madness]

Ok I will check on the flex plate and if he did balance it not sure where to check from there in less the torque converter went bad but it was new and the transmission was just rebuilt. it has about 60 miles on it i wouldn't think it was bad already but could be.
Thank you for taking the time to talk about it.