Because I'm still new to this 6 cylinder thing (which I have NO complaints about whatsoever), I wonder about the stall on a converter for a 250cid.

I have to keep my foot pretty firmly on the brake at a stop light to keep the car from rolling forward (rather aggressively).

Don't get me wrong, I like the immediate delivery of "go" when I hit the "go" pedal, I just assumed the stall on the converter would be 1000-1200ish - meaning, that, on level ground, the car wouldn't move forward without some degree of pressure on the accelerator.

I have the idle set at "thump, thump, pause, thump, thump" (750-900ish) and this little engine that could,"will" at idle.

Can you let off the brake and your car not immediately start to roll forward (aggressively) on your 250cid C4?

Dan, do you know if the converter has ever been changed? If so, to what stall (if you know)?

Thanks. 'Just wondering if all these 250 C4's are Tigers. :drive:

I would say your idle is a "schoshe" to high.

Set the idle with car in drive and all accessories ON (Lights, radio, heater, etc)

Might take two people. :D

My 77 with 250/C4 will pretty much set still (slight roll) when you let off of the brake.

I would say your idle is a "schoshe" to high.

Set the idle with car in drive and all accessories ON (Lights, radio, heater, etc)

Might take two people. :DI set the idle with the E brake on, in Drive with the (very cool) A/C on. It was a 'tad' bit colder then though.

I think I'll reset the the idle again with the warmer weather - or take the car to the track and see what kind of 60' I can get (no smart-azz jokes, Frank ;)).

You're just used to power disc brakes Rick ... you'll have to work on the muscels in your brake-pedal leg to handle those manual drums .... :)

You're just used to power disc brakes Rick ... you'll have to work on the muscels in your brake-pedal leg to handle those manual drums .... :)Ha! I thought about that too. I have disc brakes on order. That might be the difference, but I'm not counting on it. I suspect they will provide more consistent braking and quicker response to the pedal - not so much on the actual "holding back" of the torque at idle. :huh: We'll see.

Mine idles around 650 rpm in gear but will still start to roll forward as soon as I let off the brake. :thumbsup:

My '74 idles at around 850 because it idles rough any lower (vacuum leaks). The brakes really aren't all that hot, she lunges forward when I let off the brake just like you're describing.

My car does the same thing. If I'm sitting in a drive through line or whatever for a long time, I usually just put it in park.

If I'm sitting in a drive through line or whatever for a long time, I usually just put it in park. That's exactly what I do.

I have to keep my foot pretty firmly on the brake at a stop light to keep the car from rolling forward (rather aggressively).


just put a big ole stahl converter in it :bwahaharoll:

I just throw mine in neutral, The only way to solve the pressure issue would be to go with power brakes not discs. Discs only prevent the car from pulling when you brake.