'77 400 Specs
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Joined: Aug 2011
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3:55 gears and 265 tires and i didnt mean revving too much for the motor i meant to run it hard enough for me and i can watch the gas gauge move thats how i know its revved too much oh well it is a work pickup not a racing /show pickup
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Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
You mentioned before you had 3.55's ? Rpms at 70 (you mentioned this as your top speed ?) with 31" tires, the rpm @ 70 is only 2800. That's hardly the top rpm of any 400, even the stock unmolested ones. If it is, then there's something SERIOUSLY wrong with it, gears aren't going to help it.
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no you are misunderstanding what ever i guess i cant explain it any farther I MEAN I DONT WANNA REV IT THAT MUCH IT IS NOT A RACE TRUCK IT IS A WORK TRUCK!!! IF I WANTED IT TO GO ANY FASTER I COULD PROBABLY MAKE IT GO FASTER ITS MY WILL TO TRY. I JUST NEED IT SO I CAN START AND GO WITH A FULL LOAD OF WHATEVER I HAVE LOADED IT WITH AND IT DOES JUST FINE THANK YOU VERY MUCH
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
no you are misunderstanding what ever i guess i cant explain it any farther I MEAN I DONT WANNA REV IT THAT MUCH IT IS NOT A RACE TRUCK IT IS A WORK TRUCK!!! IF I WANTED IT TO GO ANY FASTER I COULD PROBABLY MAKE IT GO FASTER ITS MY WILL TO TRY. I JUST NEED IT SO I CAN START AND GO WITH A FULL LOAD OF WHATEVER I HAVE LOADED IT WITH AND IT DOES JUST FINE THANK YOU VERY MUCH
Don't get your panties in a wad. Take a chill pill. 
You jumped in here looking for advice, then when someone gave it, you "instructed them" that they were somehow ignorant of the facts. Now you're getting your dander up when I stepped in telling you how to fix your problem. You need to back off, take a deep breath and try to learn something here instead of quoting info you found on the web or in a book. The web and the books are chock full of information that's false. It's obvious to me that you're young and don't have much experience with these engines, there's nothing wrong with that, but don't get upset when things don't go your way. I've had experience in one form or another with the 400 for 40 years, starting with one in a 71 Ford Custom that belonged to a friend in high school in the mid 70's. I've built two others.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
No problem ? Then why'd you ask this ? 
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Joined: May 2003
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From: south louisiana
If it moves, chances are I've driven it or something just like it.
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Joined: Aug 2011
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i figger mine prb could. i wish i said how fast i had it was 70 not top speed i just dont like red lining it lol. my 90 302 is for the racing and stuff lol my trucks treat me better than most women and dont complain!
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Joined: Feb 2004
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From: The Shenandoah Valley
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well i stand corrected all i know is my old man (which i call my grandpa not my dad) swapped old blues 400s are flat top and he cant remember where he got the second 400 all i know is he says the one thats in it is 2 times the runner the old one was
