904 Accumulator Spring

Bakerlite said
Put the accumulator spring back in. The damage it can cause from removing it far outweighs any benefit.

This is what John Kunkel wrote about this subject:
"The purpose of that spring is to cushion the shock of the forward clutch application. Many people remove it thinking it improves upshifts but all it does is put extra strain on the forward clutch parts"

Oldest myth in the Mopar world....the spring has no affect on any upshifts

I've known John for several yrs. and he is a very knowledgeable trans. man and while he is right it does cushion the application of the clutches and front band (you never said that but it's what gives you 2nd gear so it applies to what we're talking about) he is wrong when he says it is has no affect on any upshifts. I have proved it personally so I know by experience, not just hearsay. And if you or he says I'm wrong answer me this, why did Mopar Perf. for years (going all the way back to when they were Direct Connection) sell a shift improver kit that consisted of nothing but a blocker rod that you installed under the accumulator in place of the spring?

Blocking the accumulator does cause slightly harsher clutch engagement and if your running a stock torque converter I don't usually recommend it. If your running a high stall converter (generally anything over 23-2400 rpm) it cushions the engagement enough that you'd never know the accumulator was blocked.