Detent/kickdown Ratio

[camd64]

So i finally took the old dart out and found a nice long strech of road and stuffed the loud peddle to the foor. the cars nose pulled up and she pulled hard off the line, 1st turned into second with a little tire chirp, then the speed started coming on strong. as i waited for third gear to hit i noticed it was building up too many rpm's (aka, oh crap it's not shifting) for me to feel comfortable. i let off before i thought the valves might float and right as i did it hit third. WTF! the strange part is that at low speed if anything it's shifting just a tad bit too early.? I have an Edelbrock 600 carb. with the lokar detent cable and the trans. is a early 70's 904 but the detent lever is off a mid 80's 904 lockup tranny if that makes any difference? my thinking is that the ratio between the carbs throw and detent lever is wrong so its causing the funny shifting. is there a certain measurment two should be? say if the carb is 1.5" center to center then will the dent also be the same? any other ideas to this problem?

 

[65barracudadude]

Bummer, I cant be there to adjust it. It's definately your kick down adjustment. I've had the exact problem more than once. I hope someone with a lot more experience with this will chime in. Without seeing it I cant help. And I dont have a set up to go look at because I haven't got my kick down linkage for my edelbrock yet. Sorry.

 

[fishy68]

There are a couple different lengths of detent levers that go on the trans. so it's possible you have the wrong one. I haven't had a stock vehicle in so long I can't tell you if the center to center is the same on the detent lever and carb.

 

[camd64]

I'm thinking this weekend about pulling the the arm off the trans. and elongating the hole so I can have some adjustment then when I find the sweet spot just weld the rest back up. at least if I screw it up it gives me another reason to hit up the wrecking yards.

 

[fishy68]

I've had to do that before and it always worked out but if things don't go right and you need an arm let me know. I have a couple extras. Just pay shipping on it and you can have one. Probably be about $5-6

BTW: When you under there measure the length hole to hole and let me know what it is. I have 2 different lengths so one should work.

 

[camd64]

Thanks Fishy I'm going to tear into it this weekend and see what I can come up with. I'll let you know if i booger this one up. I'm also gonna post up the measurements and results i get because i know people have had issues that just might be the same problem i'm having.

 

[fishy68]

Yeah that problem can go both ways. On my car I had to drill a new hole farther in to get it to work right.