Specific flywheel question

I just rebuilt a 75 454 truck motor and installed it into my 68 convertible. I bored it .030 over installed 9.25:1 pistons, kept the stock crank, I added a Comp cam’s 270 cam, and stock heads. I am running through a top loader transmission (not sure of gearing) to a limited slip 293 rear end. I am wondering if I changed from a steel stock flywheel to a lightweight flywheel weather it would lurch too much on start from stop. I have read a lot of posts on in the history but I think they were geared to more horsepower then my new motor will have. With the 293 gearing I know I’m not looking for a quarter mile car. I just would like it to get through the gears a little quicker to get up to cruising speed. I am going to install a new clutch and flywheel this winter and not sure if I should try a lightweight flywheel or not.

Thanks in advance
Bob

Put a 60lb. Fly wheel on it. That will help the launch and torque. A lightweight flywheel only works in a lightweight car not in a 3,000 LB. + application.

I used a 50# wheel in my old tow pickup. Definatly worked better than the stock 30# wheel when towing.

Ouch,, I used to launch a 3600# 55 with a 301 sbc with a 30# wheel and 6.14 gear. I can't even imagine what a 60# would do.

NO!! Imho oger is right so the light-weight f/w is NOT for you..

What conversion do you have that adapt's the Top-Loader to our motors??

The reason I ask is b/c I looked deep into using a MOPAR A833 OD 4-speed behind my 496.

pdq67

If you are talking to me, To adapt a top loader (RUG-DD), I used a special pilot shaft bearing from Trans-Dapt, ( they prolly are out of business now and I have two new ones left in my toolbox after 30 years).
I used the stock Lakewood 15001 housing that had multibolt patterns. I had to machine down the front release bearing retainer from the toploader to specs that would equal the GM type. It was easy. I had both the 1 1/8th and 1 3/8th input shafts with 2:77 first gear. I went to the 1 3/8's later as the 30# flywheel was twisting off the 1 1/8's input. The pilot bearing fit the sbc crank and was bronzed bushed to match the toploader.

Cool!! Thanks for the conversion info..

pdq67

Thanks guy's
Steel on order and on the way.

Pdq67: To adapt to the Toploader someone before me installed a chevy input shaft in the toploader trans. I have not had it appart to see if it was welded or what. So it fits to a standard brass pilot bushing.

Bob

I figure they R&R'd the stock T/L input shaft by just having it's overall length and tip sized to our Chevy Tranny input size is all.

I had this done to a cast-iron B/W that was out of a Stude. years ago. (Or was it a Pontiac??).....

pdq67

Thanks guy's
Steel on order and on the way.

Pdq67: To adapt to the Toploader someone before me installed a chevy input shaft in the toploader trans. I have not had it appart to see if it was welded or what. So it fits to a standard brass pilot bushing.

Bob
My guess its welded, just like the GER company used to do on the 2:52 first gear Municies.