I have a 700r4 automatic, in an 84 z28, i can go 1,2,3 then drive... my question is.. what is bettert to do for a faster acceleration in a race atmosphere, shift manualy 1,2,3 then drive or just leave it in drive and pedal to the metal, also what rpms should i shift into each gear? Its a 350 sb and is only about 1000 miles old now with proper break in on both the tranny and motor.

 

Id say go with whatever your more comfortable with.

 

7400 RPMs

 

OK that was a little funny.

Do you have a shift kit or a corvette servo? If not get'em that will make shifting it manual a little better and also get a B&M shifter its easy to install. What are the specs on your engine? If you have a average built 350 5500 rpms should be your shift points.

 

i already have a steet /strip kit in, with the b&m shifter with the lockout on it, just curious whitch method is better for faster acceleration if it even makes a difference
Brody, thanks for the smartass comment, it really helps everyone around here actually trying to learn something

 

Well, I'll help you as soon as you answer libo's question.

Engine specs play a role in the RPM at which you should shift.

 

Hold it in first till you launch then shift it to third. That's what I did in my TA, just to make sure that it wouldn't go into second.

Shiftpoints depend on your setup. What heads/cam/intake/exhaust/gears do you have?

 

A stock 700R4/4L60 should not be manually shifted at WOT. It takes a second or two for the line pressure to rise so it can shift to the next gear. In other words, you'll end up over revving everytime. Just leave it in drive and mash it. If your shift points are not where you want them to be, you'll need to buy a spring and weight kit for the Governor. Do not use the TV Cable to try and adjust your shift points either! Very bad idea!

 

This is true. I used to overrev my L69 '84 that way.

 

It isnt "stock" though, it was built by mad dog transmissions ( maddog-transmissions.com ) and has a street / strip kit along with aftermarket mounts and some other small things, so does that make a difference in manualy shifting at wot? Or could i just left off the gas for that fraction of a second alittle to shift to the next gear and would it still be better then just throwing it into 3rd or d to let it go on its own

 

I always shifted mine manually... The tranny survived longer then I thought it would...

 

Does it instantly shift to the next gear or is there a second or two delay? I have a Trans-Go Valve body kit in mine and it still does it. Like I said above, if it's not shifting at the RPM you desire, all you need to do is buy a kit to change the springs and weights on the governor. It's an easy job. The governor is located on the driver side of the trans. It has a stamped steel dome shaped cover. You can't miss it. The other thing you can try is snagging a couple governors out of the junk yard. Different engines had different RPM ranges hence different governors with different springs and weights. Good Luck!

 

[QUOTE=Denial;3061276]It isnt "stock" though, it was built by mad dog transmissions ( maddog-transmissions.com ) and has a street / strip kit



good luck with that trans might need to read post about them in vendor section

https://www.thirdgen.org/forums/afte...ht=maddog+long

 

He never answered the original question pertaining to the cars specs.

 

If theres a delay in the shift when you manually shift, leave it in drive. If it shifts hard when you manually shift with no delay, you can shift it yourself. Go to a track and test which rpm is the best to shift at. Honestly though, it wont make that big of a difference and you'll probably end up wearing out your transmission which happens a lot of fbodies that people manually shift.

 

LOL, I dont know about that. Ive had 12 thirdgens, and have been racing them regularly for 9 years. I never had one problem. In a lot of transmissions, it actually increases line pressure...which means good. I dont remember if the 700R4 does (its been a while since ive been into one), but TF 904's and 727's do, as do the TH350's and 400's.

 

Leave it in D.

You don't like it, get yourself a manual. Really.

 

Eh, I manually shifted my 700R4, and it went out in less than a year. The guy that rebuilt it said that its pretty common and I was lucky mine lasted as long as it did.

Edit: My GTA was error proned anyways, so I was probably just unlucky again.