I think the converter will give me my biggest gains still. I'm not saying the afr gauge won't do anything but I personally feel at the moment that should not be my next move. New drag shocks I actually need. 3 are leaking !

 

Well guys. I took the car out one last time. I planned on doing a little exhaust tuning but between oil downs i had no timei only got two runs in BUT !!!! . I ran a 12.52 with a 1.80 60 ft at 106.49. Then i ran a 12.45 with a 1.75 60 ft. and 106.56 mph. I think my quest is far from over. I intended to put in my new 355 but i feel i can still gain a little e/t . I think for next spring i will for sure put in the new converter and im doing a glass hood and deck lid. i think a 12.2x will be possible. I might add my fuel pump is junk by the time i was in 3rd gear i was seeing 4 psi. so that does not help.

 

I guess its time to post up my plan of attack to get a lower e/t. Well im currently re doing some body work and going to re paint it. I also took this opportunity to try to shave 200 lbs. Im going to be using a robbmc pump to help fueling issues then once we see what gains we got from this then its on to a new torque converter.

shooting for bottom 12's If i can sneeze an 11.99 that would be sweet but its a tall order.

https://classicoldsmobile.com/forums...tml#post985130

 

UPDATE !!!!!!!!!!! First time out this year we ran a best of 12.38 @ 107 mph with a 1.75 60 ft. Changes where we shed some weight , new fuel pump , new front control arms. The fact we ran faster our first time out tells me this should be interesting as I think I have a solid shot at a bottom 12 sec e/t.

 

Nice runs Copper! This car is coming along nicely!

 

X2

 

Thanks guys. The possibility for lower time slips is there. I would like to run a 12.2x as it is before the tq. Converter swap and do some jetting. I think getting a 12.0 out of it is a possibility.

 

Nice runs car looks and sounds good.

You mention new fr ctrl arms, what did you go with and why did they affect the times are they just lighter or is there something else there ?

 

I went with ebay tubulars lol. I double nutted all the bolts so that i can run them as loose as possible for faster movement. I may have lighthened the car by 100 lbs and the fuel pump was a major upgrade.

What im finding is my valve springs are weak and i cant spin past 6k rpm and if i shift too late the car noses down and the converter slips as power goes away. My worst run was a 12.79 @ 100 mph . it was then i realized i need to re set my shift light. After that i went 12.44 and 12.38. Im sure if i made more runs i could have gotten a 12.2x.

next time out should be better now that i have it figured out. I only made 4 runs and 2 of them where kind of throwaways.

 

UPDATE:

car went 12.29 @ 107 w/ a 1.71 60 ft. No changes weather was great.