How fast can I go!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

turner15 · 07-02-2010, 10:54 PM

So I took the truck for a long ride 2 hours is long for me. Coming home I decided it was time to see what she could do. The best I could get her going was 81 MPH. I think this is low???

71 stock 350/350 no posi 3 speed (I think) Full size fleet

oldblue72c10 · 07-02-2010, 11:06 PM

Well if it is stock and never rebuilt maybe 81mph if you give her a good rebuild and port and polish. And a intake/carb setup you will be there in less then 2hrs lol

Longhorn Man · 07-02-2010, 11:08 PM

either your speedo is off, or your truck is getting real sick.

CollinH · 07-02-2010, 11:43 PM

do you have a granny 4 speed?

'72customdeluxe · 07-02-2010, 11:53 PM

granny four speed still has a 1:1 ratio in fourth like any other typical '71 trans. I would say check your secondaries, but I can cruise well over 80 in the primaries with 3.73's and 28" tires

oldblue1968chevy · 07-03-2010, 12:25 AM

gee my WORN OUT 350 3spd 373 combo CAN do better than that on a LONGGGGG streach of road.

ps that was on drum brakes and no telling HOW old suspension parts

haha ive gotten smarter lol

GASoline71 · 07-03-2010, 12:39 AM

I can bury mine until it points to the "H" in MPH at the bottom of the speedo...

Gary

**El Jay** · 07-03-2010, 02:42 AM

I'm with Andy (LHM), I think you have a speedo or calibration problem.

Whatcha got for a rear gear? What size tires are you running? How many Rs are your turning at 81 MPH?

tim21391 · 07-03-2010, 04:48 AM

i hit mine at 100 before but i wanted to get out of it so i let off because i didnt have a tach and i didnt wanna blow it..

LONGHAIR · 07-03-2010, 06:31 AM

Quote:

Originally Posted by turner15

71 stock 350/350 no posi 3 speed (I think) Full size fleet

The 350/350 is supposed to be telling us 350ci engine and 350TH automatic transmission.....what is the 3 speed thing about? and the "I think" confuses even more?

caminokid · 07-03-2010, 06:46 AM

Quote:

Originally Posted by tim21391

i hit mine at 100 before but i wanted to get out of it so i let off because i didnt have a tach and i didnt wanna blow it..

If you listen to the motor...and it sounds like it is being stressed, that is when you let off. Most of my vehicles dont have tachs. Never blew one cause of no tach. Just listen to your motor.

My 70 had a 307 and a 3 on the tree. I know I had it past 100. But that was the 80's too. I remember it was blowing smoke too.

turner15 · 07-03-2010, 07:24 AM

I think my speed o is ok
How about this. my foot was on the floor at 81 maybe I'm not getting full throttle cable length? She felt like she had more to give. How do I fix that? Washers behind the mounting brackets? That will bring it off the Firewall.

Hottrucks · 07-03-2010, 08:50 AM

ok 2 things

these fancy road gps will show 3 digits in the mph
and there is no pin near the zero on our speedo's

Take a pic of it ?? it might be a bent bracket...I know when I put the new carpet in I had to adjust mine....yours should be a cable??

GASoline71 · 07-03-2010, 11:48 AM

Quote:

Originally Posted by LONGHAIR

The 350/350 is supposed to be telling us 350ci engine and 350TH automatic transmission.....what is the 3 speed thing about? and the "I think" confuses even more?

I was curious of this as well...

Gary

turner15 · 07-03-2010, 02:38 PM

Quote:

Originally Posted by Hottrucks

ok 2 things

these fancy road gps will show 3 digits in the mph
and there is no pin near the zero on our speedo's

Take a pic of it ?? it might be a bent bracket...I know when I put the new carpet in I had to adjust mine....yours should be a cable??

It is a cable and I do remember having trouble with the bracket when i put the new cable on. the pedal hits the floor for sure

junkyardjohn · 07-03-2010, 03:16 PM

I THINK SOMEONES GETTING THIER LEG PULLED.

JOHN

Longhorn Man · 07-03-2010, 05:20 PM

even an inline 6 with a 3 speed (manual or automatic) should be able to hit 100.

caminokid · 07-03-2010, 07:21 PM

Quote:

Originally Posted by Longhorn Man

even an inline 6 with a 3 speed (manual or automatic) should be able to hit 100.

Seen 120 in a Nova with 250 and 350 turbo

'72customdeluxe · 07-03-2010, 07:23 PM

maybe try a fuel filter, or timing

**FRENCHBLUE72** · 07-03-2010, 08:07 PM

Try it on a tailwind type of day..

junkyardjohn · 07-03-2010, 08:47 PM

Many years ago , i had a good friend that owned an old chevette scooter (we always refered to it as his 3 cyl. 2 speed sh!t box) & it would go faster than that. This has to be a late april fools joke.

john

turner15 · 07-03-2010, 09:22 PM

Its no joke, I traveled about 2 miles with the foot to the floor and got nothing higher then 81. So I'm 99% sure that the pedal hits the floor before the throttle is fully open. I suppose I can simply check this by having someone pres the pedal to the floor and then check under the hood to see if there is anything left the linkage. How do I fix it?

I have only put one tank of gas in her since I finished the truck. I have had lots of problems to work out and this is the last (I hope) My timing was off before the test it was at 4 degrees, I had it fixed and its at 8 degrees now. That took away a hesitation. I knew it was off and I have not been able to do a burn out yet. I of course figured it was the timing now I am hoping the pedal issue?

bglad420 · 07-03-2010, 10:09 PM

Try going down hill...

junkyardjohn · 07-03-2010, 10:12 PM

81 IS PROBABLY FAST ENOUGH.

ARE YOU A TEACHER? OR A HIGH SCHOOL STUDENT?

'72customdeluxe · 07-03-2010, 11:59 PM

Quote:

Originally Posted by turner15

Its no joke, I traveled about 2 miles with the foot to the floor and got nothing higher then 81. So I'm 99% sure that the pedal hits the floor before the throttle is fully open. I suppose I can simply check this by having someone pres the pedal to the floor and then check under the hood to see if there is anything left the linkage. How do I fix it?

I have only put one tank of gas in her since I finished the truck. I have had lots of problems to work out and this is the last (I hope) My timing was off before the test it was at 4 degrees, I had it fixed and its at 8 degrees now. That took away a hesitation. I knew it was off and I have not been able to do a burn out yet. I of course figured it was the timing now I am hoping the pedal issue?

you might bump the timing up even more. 8* was more of a recommendation for emissions. Try 12-16

07-02-2010, 10:54 PM	#1
turner15 Registered User Join Date: Jan 2007 Location: Toronto Canada Posts: 265	How fast can I go!! So I took the truck for a long ride 2 hours is long for me. Coming home I decided it was time to see what she could do. The best I could get her going was 81 MPH. I think this is low??? 71 stock 350/350 no posi 3 speed (I think) Full size fleet

07-02-2010, 11:06 PM	#2
oldblue72c10 LIGHT' EM UP!!!!!!!!!! Join Date: Nov 2009 Location: Collinsville Oklahoma Posts: 243	Re: How fast can I go!! Well if it is stock and never rebuilt maybe 81mph if you give her a good rebuild and port and polish. And a intake/carb setup you will be there in less then 2hrs lol __________________ BONDO IS YOUR FRIEND WOULD YOU EVER USE YOUR FRIEND 1972 custom 10 longbed current 360 building a racing 355

07-02-2010, 11:08 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: How fast can I go!! either your speedo is off, or your truck is getting real sick.

07-02-2010, 11:43 PM	#4
CollinH Registered User Join Date: Apr 2010 Location: East Wenatchee, Wa Posts: 30	Re: How fast can I go!! do you have a granny 4 speed?

07-02-2010, 11:53 PM	#5
'72customdeluxe Registered User Join Date: Jan 2008 Location: Tejas Posts: 691	Re: How fast can I go!! granny four speed still has a 1:1 ratio in fourth like any other typical '71 trans. I would say check your secondaries, but I can cruise well over 80 in the primaries with 3.73's and 28" tires __________________ '72 cheyenne super step, '05 long bed gmc

07-03-2010, 12:25 AM	#6
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: How fast can I go!! gee my WORN OUT 350 3spd 373 combo CAN do better than that on a LONGGGGG streach of road. ps that was on drum brakes and no telling HOW old suspension parts haha ive gotten smarter lol __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

07-03-2010, 02:42 AM	#8
El Jay Gone to greener pastures Join Date: May 2007 Location: Gateway to the Delta Posts: 7,354	Re: How fast can I go!! I'm with Andy (LHM), I think you have a speedo or calibration problem. Whatcha got for a rear gear? What size tires are you running? How many Rs are your turning at 81 MPH? __________________ '69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck

07-03-2010, 04:48 AM	#9
tim21391 Registered User Join Date: Jul 2007 Location: Salina, Kansas Posts: 1,998	Re: How fast can I go!! i hit mine at 100 before but i wanted to get out of it so i let off because i didnt have a tach and i didnt wanna blow it.. __________________ 1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796

07-03-2010, 07:24 AM	#12
turner15 Registered User Join Date: Jan 2007 Location: Toronto Canada Posts: 265	Re: How fast can I go!! I think my speed o is ok How about this. my foot was on the floor at 81 maybe I'm not getting full throttle cable length? She felt like she had more to give. How do I fix that? Washers behind the mounting brackets? That will bring it off the Firewall.

07-03-2010, 08:50 AM	#13
Hottrucks Redefining LowBudget Join Date: Mar 2009 Location: lebanon Cow Hampshire Posts: 4,538	Re: How fast can I go!! ok 2 things these fancy road gps will show 3 digits in the mph and there is no pin near the zero on our speedo's Take a pic of it ?? it might be a bent bracket...I know when I put the new carpet in I had to adjust mine....yours should be a cable??

07-03-2010, 03:16 PM	#16
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,427	Re: How fast can I go!! I THINK SOMEONES GETTING THIER LEG PULLED. JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

07-03-2010, 05:20 PM	#17
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: How fast can I go!! even an inline 6 with a 3 speed (manual or automatic) should be able to hit 100.

07-03-2010, 07:23 PM	#19
'72customdeluxe Registered User Join Date: Jan 2008 Location: Tejas Posts: 691	Re: How fast can I go!! maybe try a fuel filter, or timing __________________ '72 cheyenne super step, '05 long bed gmc

07-03-2010, 08:07 PM	#20
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,589	Re: How fast can I go!! Try it on a tailwind type of day.. __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

07-03-2010, 08:47 PM	#21
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,427	Re: How fast can I go!! Many years ago , i had a good friend that owned an old chevette scooter (we always refered to it as his 3 cyl. 2 speed sh!t box) & it would go faster than that. This has to be a late april fools joke. john __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST



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07-03-2010, 09:22 PM	#22
turner15 Registered User Join Date: Jan 2007 Location: Toronto Canada Posts: 265	Re: How fast can I go!! Its no joke, I traveled about 2 miles with the foot to the floor and got nothing higher then 81. So I'm 99% sure that the pedal hits the floor before the throttle is fully open. I suppose I can simply check this by having someone pres the pedal to the floor and then check under the hood to see if there is anything left the linkage. How do I fix it? I have only put one tank of gas in her since I finished the truck. I have had lots of problems to work out and this is the last (I hope) My timing was off before the test it was at 4 degrees, I had it fixed and its at 8 degrees now. That took away a hesitation. I knew it was off and I have not been able to do a burn out yet. I of course figured it was the timing now I am hoping the pedal issue?

07-03-2010, 10:09 PM	#23
bglad420 Registered User Join Date: Dec 2005 Location: Bellingham, WA Posts: 167	Re: How fast can I go!! Try going down hill... __________________ 70 GMC LWB Fleetside, 402BB, TH400 90K original only cost $50.

07-03-2010, 10:12 PM	#24
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,427	Re: How fast can I go!! 81 IS PROBABLY FAST ENOUGH. ARE YOU A TEACHER? OR A HIGH SCHOOL STUDENT? __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

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