GRAND PRIX 79 Grand Prix Resurrection

[CDUNIGAN1981]

https://www.ebay.com/p/227777421?iid=401744788032

B & M 80712 Manual Trans Shift Detent Plate

Will this allow me to use my factory 3 speed shifter?

 

[gnvair]

The lock up/non lock issue comes down to this (and this is coming from owning a Turbo Regal);
Lock up:
Better gas mileage
Cooler trans temps during cruising speeds.
About 150 less rpm when the converter is lock

Non lock
Better elapsed times (lower et's) when drag racing.
About 150 more rpm at highway speeds.
Higher trans temps at cruising speeds.

Bottom line is if you are drag racing then the non lock is the way to go as the non locks tend to be more efficient and weigh less than a lock up converter.
If it is more a street cruiser then a lock up is fine. Just make sure you have the lock up operating properly and engaging at the proper points.

 

[gnvair]

https://www.ebay.com/p/227777421?iid=401744788032

B & M 80712 Manual Trans Shift Detent Plate

Will this allow me to use my factory 3 speed shifter?

That is for a B&M Pro Stick shifter. The Pontiac and Chevrolet shifters do not have removeable detent plates. You need to find a 4 speed shifter if you want all 4 positions.

 

[CDUNIGAN1981]

The lock up/non lock issue comes down to this (and this is coming from owning a Turbo Regal);
Lock up:
Better gas mileage
Cooler trans temps during cruising speeds.
About 150 less rpm when the converter is lock

Non lock
Better elapsed times (lower et's) when drag racing.
About 150 more rpm at highway speeds.
Higher trans temps at cruising speeds.

Bottom line is if you are drag racing then the non lock is the way to go as the non locks tend to be more efficient and weigh less than a lock up converter.
If it is more a street cruiser then a lock up is fine. Just make sure you have the lock up operating properly and engaging at the proper points.

Any advice on controls?

 

[gnvair]

Take your pick https://www.summitracing.com/search/part-type/torque-converter-lock-up-kits/transmission-type/700r4

 

[CDUNIGAN1981]

Dashboard is out.
FWIW there was only a single screw in each vent hole. The heads on both snapped which was my holdup. I nervously drilled each out.

I'm happy to be able to see all my wiring and duct work.

My next step is floorboards.

 

[CDUNIGAN1981]

I'm convinced the lockout is what I want. Feel like the cooler transmission, better mileage is cool but was really swayed with the prospect of lower RPMs on my Poncho motor during hwy use.

Still thinking about controls for lockout and shifter.

 

[carnutjw]

Any suggestions on controls?
I think I would really be happy with lower RPMs cruising the Pontiac motor.

I need to understand the lockup controls I should go with.

I'm also trying to find out a 4 speed shifter. I thought I had ran across a kit to adapt my 3 speed to 4.

Not sure what shifter you're using, but maybe these guys have something you could use? Might be worth a call.🤷‍♂️

 

[olds307 and 403]

I'm convinced the lockout is what I want. Feel like the cooler transmission, better mileage is cool but was really swayed with the prospect of lower RPMs on my Poncho motor during hwy use.

Still thinking about controls for lockout and shifter.

Still surprised guys are only seeing a 150 rpm gain, I always see 250 to 300 rpm on different vehicles and tachs. I am currently using the TCI lock up kit in my 88. It works quite well but the vacuum switch will need adjustment with your bigger cam. What shifter are you currently using?

 

[TURNA]

Whats the RPM range of your cam?