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The right thing would be to open it up, I agree. This engine has had a few other issues, though, so I may just run it and put further time/money towards a new engine when that time comes.

I am thinking about checking to see what that converter checked. I already added the weight for a 360 and there is no noticeable vibration…I’ll take it for an extended drive today just to be sure. Having said that, Kern Dog mentioned these aren’t standard weights, so it could be they just used...

Whether it was balanced internally or externally was not on my radar. When going through this process with SST, I was asked if the engine was internally or externally balanced and I responded that it was a 318 stroked to a “355”, at which point I was instructed to look at the flex plate. In...

I’m very curious as well. I was told that the engine was originally a 318 that was stroked to a “355” via an old company in Sothern California named Speed-o-motive a long time ago, along with 360 heads and a cam. What makes a 318 able to be internally balanced and a 360 external?

That’s what’s tough about obtaining a car without all of the history. The first issue I hunted for a while with this car and finally solved was oil starvation because the pickup tube was literally sideways in the oil pan. Wild.

After searching for some on eBay, I do see some that have similar weights. In any case, wasn’t on my radar when diagnosing.

Here it is

Now I can finally finish putting the interior back together and remove the column shifter. I’ll eventually post my full experience for those looking to do a conversion.

I am incredibly excited to share that I finally figured out what was causing the vibration! As mentioned in my first post, I have been chasing a vibration that was not present with the automatic. It’s a 318 (internally balanced) and I confirmed no counter weights on the flex plate, I checked...

This issue that you are describing is because the clutch is not fully disengaging. You can shift with the engine off because the input shaft isn’t spinning. If you used to be able to shift, I would try re-bleeding the system and go from there.

They did not say, but the solution is to shim up the trans or change the angle of the rear end. In my case, I did adjust the angle of the rear end to be in spec; if I shim the trans, it will be even more in spec, which I am planning to do. Tremec has an app where you can use your phone to...

Correct, no vibration prior to. Yes, mine does now tilt back more and according to SST, this is necessary for clearance, but there is some room into shim it up that I will do. Good call out to mark it; I didn't mark it, but I noticed right away due to a few reference points that I was very...

Very interesting; I didn’t know they could be adjusted like that. I will perform that when I pull it out. Thank you. The quality control issue is quite disappointing, but I’m hopeful and supportive of these aftermarket ventures. As is with life, no easy road! I would do this all over again...

It looks like common practice to balance the flywheel and PP as a unit, even with a zero balanced part. The other issue I had was the pressure plate fingers were not all even; I called McLeod and they said as long as they are all within 5 thousandths of an inch of each other in height, then I...

Yup, I will conclude the issue by doing that with and without the flywheel/ PP.

The kit comes with McLeod Super Street Pro level Flywheel, PP, and Clutch. I discovered via Mcloed’s website that they highly recommend balancing the Flywheel and PP as a unit…I am in disbelief as to why they don’t just to this off the bat if purchased together. The SST instructions don’t...

Right…definitely disappointed; what I’ve learned is that even if the components are said* to be zero balance from the factory, you should still confirm if not specifically confirmed from the factory.

Yes, I have been in contact with them, running through some variables. On the pinion angle, I did check that and needed to adjust by 2 degrees, but the vibration isn’t movement/ road speed related, it’s tied to RPM. It’s looking more and more like out of balance flywheel/ PP.

In neutral it is still there. I did just read that if I do this test in gear with clutch disengaged (and if it still vibrates), then it rules out the clutch and transmission, leaving the flywheel and PP.

Yes; it had a 904 and there was no vibration at all.