75 Spectra V-Drive

[78Southwind]

So here's some food for thought.

I have decided to run a direct drive set-up but I am not sure which way I want to go. I can run what I have which is the TCI Front Pump Drive which is a (2) piece or I can run a (1) piece A 1 type deal.

I really don't have any negatives thoughts about running a (1) piece A 1 type Front Pump Drive since I will be running a Billet Steel Flexplate. The only down side I can see is the cost to buy one.



What I don't like about the 2 piece TCI Front Pump Drive is that since the motor plate is 3/8" thick I would have to run an adjustable slip collar. There needs to be 1/8 to 3/16" travel from where the pump drive is bottomed out in the transmission to where the slip collar is bottomed out in the flange. I guess I just don't like the fact that the slip collar is spinning inside the trans case and I am just wondering how likely it would be for the collar to loosen up and create some damage?

TCI 162000 - TCI Circlematic Front Pump Drive Kits




TCI 745050 - TCI Circlematic Front Pump Drive Kits


I measured the flange internally and the spline gear in the flange doesn't start until about 5/16 into the flange (I believe the spiral lock rides in this area). But since I am using the 2 piece lock collar that rides on the outside of the flange then I think I would just subtract 5/16" from the motor plate size 3/8" which equals 1/16". So if I start at (b) which is the spiral lock slot for no motor plate and measure 1/16" towards the engine that would be the starting place for the lock collar. Then set 1/8" to 3/16" for travel.