Frustrated in Texas!!

[Jackpine]

Actually, I suspect your wheel/tire combination. I think your tires are MUCH bigger than your neighbor's, which reduces your effective gear ratio by a bunch. This is going to make your truck slow off the mark, unless you re-gear to compensate.

If you tell me what size tires your neighbor has, I'll be able to tell you the difference in your effective gear ratios.

AND, I would not expect the TC to lock up at all in a WOT 0-60 run. With that load, the TC is going to stay unlocked to provide torque multiplication.

- Jack

[88Racing]

I'm with Jack on the wheel size.
The stock OEM on the 20's is 275/55r20.
This is the same size as the stock OEM 18 tire once squish is taken in and accounted for.
Peace!

[Jackpine]

IF your OEM tires were 275/55/20s, you've reduced your effective gear ratio to 3.58. You've lost a bunch of "mechanical advantage" and your truck is going to be slow off the mark. Now you can spend more money and re-gear if you'd like your acceleration back.

- Jack

[shotgun]

Ooops - I failed to pay attention to the WOT part.

Sorry.

[Jackpine]

Hey! Welcome to the "stupid post club"! I'm the charter member and we're always happy to have new members join us.

- Jack

[shotgun]

Originally Posted by JackandJanet

Hey! Welcome to the "stupid post club"! I'm the charter member and we're always happy to have new members join us.

- Jack

I nominate myself for president-elect. Do I hear a second?

My only hope to make up for that one is for 15 people to post questions about GR or TS in the next 10 minutes...(assuming a 15 atta boys for 1 aw $h!t ratio).

[Jackpine]

It's more like 20:1, at least that's how I remember it. I've got such an "atta-boy" deficit right now that there's no hope for me.

- Jack

[Tuscany FTX]

Originally Posted by JackandJanet

Actually, I suspect your wheel/tire combination. I think your tires are MUCH bigger than your neighbor's, which reduces your effective gear ratio by a bunch. This is going to make your truck slow off the mark, unless you re-gear to compensate.

If you tell me what size tires your neighbor has, I'll be able to tell you the difference in your effective gear ratios.

AND, I would not expect the TC to lock up at all in a WOT 0-60 run. With that load, the TC is going to stay unlocked to provide torque multiplication.

- Jack

My neighbor is running the stock(OEM) wheels/tires. They are 275/65/18, which is also what my stock wheels/tires were.

[Jackpine]

Originally Posted by Tuscany FTX

My neighbor is running the stock(OEM) wheels/tires. They are 275/65/18, which is also what my stock wheels/tires were.

Uh - you said earlier that he had 17" wheels, not 18's. Can you tell me which it really is? And, is his truck the same model? Because if his is lighter than yours, it's going to be faster too.

I'm going to add that your larger tires DO have more "mass", which means there IS more power needed just to get them rotating (along with the increase in weight they add to your truck, the increased "rolling resistance" due to the larger footprint and the increase in wind resistance you'll see at highway speed due to the larger frontal area).

- Jack

[Tuscany FTX]

Originally Posted by JackandJanet

Uh - you said earlier that he had 17" wheels, not 18's. Can you tell me which it really is? And, is his truck the same model? Because if his is lighter than yours, it's going to be faster too.

I'm going to add that your larger tires DO have more "mass", which means there IS more power needed just to get them rotating (along with the increase in weight they add to your truck, the increased "rolling resistance" due to the larger footprint and the increase in wind resistance you'll see at highway speed due to the larger frontal area).

- Jack

Yes! I did say 17's. Sorry, after I talked to him I was corrected. It is the same truck. Jack, in your opinion, why would the canned tune 0-60 be quicker than my Custom Tune, even if we are dealing with a tire size and gears issue. Seems to me, that I should have picked up some and not lost power from the Custom Tune. My neighbor also corrected me on his 0-60 time. He said in 87 Custom Tow he is at a 7.37s 0-60. Thanks, for all the input!