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#1074742 12/22/2014 8:32 AM
Joined: Feb 2014
Posts: 46
W
Wrench Fetcher
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Posts: 46
hi all, ive tryed to determine what speed i was at long ago,(creative driving days lol).i had 28" tires,323 gears, and sm420 trans.if some one could help my mystery would be most appreciated.my computer doesnt like to help much here.ill be sendin in pics of my 52 drw 3800 soon. good luck all on your projects. oh yeah on last night running i was turning 6,000

Joined: Aug 2004
Posts: 1,417
ODSS Lawman
ODSS Lawman
Joined: Aug 2004
Posts: 1,417
You can use some tools found in the Tech Tips. Using a Ratio Calculator

With the info you provided, 6000 RPM, 3.23 rear end and SM420 and 28" tires you were going 154 mph.

I hope your brakes are good!


SWEET
Sergeant At Arms: Old Dominion Stovebolt Society
BUNS?!?!?!Where we're going, we don't need no buns.....
1950 GMC 450
1951 Chevy 1/2-Ton
The GreenMachine
In the Stovebolt Gallery
Joined: Mar 2002
Posts: 9,115
'Bolter
'Bolter
Joined: Mar 2002
Posts: 9,115
I always knew these trucks could really move!

Last edited by truckernix; 12/22/2014 4:26 PM.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!
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L
'Bolter
'Bolter
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Posts: 2,951
Maybe the tachometer is set for a 4 cylinder or 6 cylinder. 6000 seems way too high.

Joined: Jun 2009
Posts: 1,596
4
'Bolter
'Bolter
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Posts: 1,596
Rather than make a guess at it, does someone you know have a GPS or a smartphone that you can go for a drive with?

I got the same 154 MPH that SWEET did. I'm assuming that both the RPM and gear ratio are off.


1946 GMC Pickup - S-10 Frame, 455 Buick, TH400, original patina.

My 46 GMC on Photobucket
Joined: Feb 2004
Posts: 29,740
H
Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
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Posts: 29,740
Getting 6K from a stovebolt engine is about as likely as finding a chicken with lips. 3500 would be pushing things. What engine are you running, and what brand of tachometer?

The simplest way to get an accurate speed reading is to use a Garmin or TomTom GPS and compare the satellite info to your speedometer, then either adjust the speedometer drive gear teeth up or down or get a ratio-change box from a speedomerer shop.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
wots50 #1074831 12/22/2014 10:16 PM
Joined: Nov 2006
Posts: 2,544
D
Shop Shark
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3800 with dual rear wheels and a sm420, motor turning 6,000?
Sounds like something is haywire here, not saying it can't be done but I'd sure be worried about shrapnel.

wots50 #1074833 12/22/2014 10:20 PM
Joined: Dec 2008
Posts: 898
5
'Bolter
'Bolter
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Posts: 898
Would it even go that fast, if you dropped it out of an airplane?
Just wondering.

Brian



Brian
1955.2 3100 Truck
The older I get the more dangerous I am!!!!!
wots50 #1074841 12/22/2014 10:48 PM
Joined: Feb 2014
Posts: 46
W
Wrench Fetcher
Wrench Fetcher
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Posts: 46
Thanks for fast responce,that was'nt 3800 or early bolt motor.62 1/2 ton panel with olds rear,punched out 292 with lots of miles.poor brakes,bad tires.but good enough to keep the pole with 12 cops in tow.45 mniles later i lost em.but had 3 worrents out by then.

wots50 #1074843 12/22/2014 10:51 PM
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Posts: 46
W
Wrench Fetcher
Wrench Fetcher
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Joined: Feb 2014
Posts: 46
oh yeah it was cheep electronic tach.motor only seen top rpms for a secont until that last night.with heavy oil it worked but last night was last time it ran,down 3 1/2 quarts of oil

wots50 #1074852 12/22/2014 11:32 PM
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D
Shop Shark
Shop Shark
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I think this post should go to the greasy spoon......serves no purpose here.

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5
Renaissance Man
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I believe the tires would have come off of the wheels at 154 MPH.


1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
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H
Kettle Custodian (pot stirrer)
Kettle Custodian (pot stirrer)
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Too bad he's on the left coast- - - - -if he could come and talk to my garden for a while next spring, I could save a bundle on fertilizer!
grin
Jerry



"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
Joined: Jan 2013
Posts: 1,084
A
'Bolter
'Bolter
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Posts: 1,084
??????


Allen
Yeah, well, that's just like, you know , your opinion, man - The Dude

1948 Chevy 3600 - goal Original restoration, Current Stage 1 - Disassembly and getting body in primer
1954 GMC 3100 goal Hot Rod, Current Stage 1 - Get body in primer
1931 Ford Model A 5 window Coupe - Old Skool Hot Rod
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1974 Stingray Corvette

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Posts: 2,232
Moderator: Interiors, Texas Bolters, Name that Part
Moderator: Interiors, Texas Bolters, Name that Part
Joined: Jan 2013
Posts: 2,232
Hotrod,

do you mean to tell me that chickens don't have lips? That just wrecked my christmas vacation. :-)

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Kettle Custodian (pot stirrer)
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Originally Posted by ndkid275
Hotrod, do you mean to tell me that chickens don't have lips?

That quote is from the chorus of a silly little song from the 1970's, back when Rowan and Martin's "Laugh-In" was the most popular show on TV.

"Does a chicken have lips?
Does a rattlesnake have hips?
Can an elephant make a living blowing bubbles through his nose?
If your goldfish grows hair, and starts sleeping in your chair- - - -
Just blow in his ear- - - -he'll follow you anywhere!"


I've searched just about every song lyric database I can find, and I can't come up with an audio track of that one. It's not on You Tube, doggone it! Funny song!

Edit: Found it!



LOL!
Jerry



"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!

Moderated by  Dusty53, SWEET 

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