Just read through your whole thread and it looks like you had your share of ups and downs for sure.
My engine came with the tci engine plate and it is 1/4" but I didn't have a flex problem at starter because of where my mounts are. It is stiff as a wedding night pr
*ck!!! I did run into a problem with my torque converter being bad so I ordered a billet, double balloon plate converter from Competition Transmissions (running blower and nos) and they asked me the thickness of my plate and welded the converter tabs on so they were spaced properly and no washers were needed. I'm running a P/G with a TH350 style converter. While doing it I did find where original owner and project starter used a stock ford flex plate drilled for a turbo 350 converter pattern and the holes were RIGHT ON THE BEND IN THE PLATE.... the one that is for strength. That freaked me out. So I got a new J.W. plate with all 3 bolt patterns in it. I couldn't believe they did that with a 466 running a blower. The tranny it's self looked like something from the junkyard with a pro-tree brake put in it and it never seemed to get my power from the crank to the 33" M/T's... even with an accidental 25 PLUS lbs of blower boost on my last 2 passes. So next weekend I'm running to NY to Comp Trans and picking up my new P/G and dropping off my injection system to be converted to alcohol.
I had to laugh about the MPG thing. After I installed my Enderle injection I was getting GPM!!!! Literally! On racing gas, to make a 1/4 mile run, including warm up, tire burn out, pass and back to my trailer (1/2 mile round trip), I was burning 2 gals of fuel at 8.50 a gallon. That is 4 GPM.... NOT MPG! LOL
And now I am going to alcohol which burns colder, has higher octane BUT uses 3 times MORE than gas. So I will be lucky to make the 1/2 mile loop on 4-5 gallons. So I am told. Another good point is even at 3:1, alky is still cheaper than racing fuel.
Maybe I should look into an OD trans
Good thread though and I can see it helped a lot of guys out. I just got a kick on the fuel mileage part
Good luck to ya and have a good one!!!!!!