Top Speed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Mike76251 · 03-27-2003, 08:45 AM

I have a little poll-type question for you all,
My 1984 stock height C-10 1/2-3/4 ton with it's stock engine and 700R4 seems like it hits a brick wall @ 100mph.
It seems like that flat front end is the cause because I know it has enough power to do better.
I am not telling anyone to "go out and see" and I would further advise anyone doing that to have new name brand tires on the ride.
What have you seen out of your trucks?

82BlackBeast · 03-27-2003, 08:59 AM

I was able to get about 125mph out of my old '77. It had a 350 with a TH350, not sure what gears. It was bone stock and would cruise at that without too much trouble. Its hard to say what it would top out at with it only having an 85mph speedo. I got the 125 when I was chasing a friends Camaro one night and he told me about what we were running. I never had it much over that I don't think. Due to some other "issues" I haven't had my current truck over 100mph, but there again I still have an 85mph speedo so its hard to say exactly. I think it would top 140mph without any problem but once you top 155 or so it takes a ton of power to push the truck through the air much faster. It doesn't help that we're all driving a "flying brick" as far as aerodynamics go...:p

CHaingKaiShek · 03-27-2003, 09:05 AM

my 73 c-10 1/2 ton pickup will bury the new speedometer needle (120mph) with reletive ease, however you can feel the wind hit the truck in gusts, and it does have an effect.

My truck has a semi-built (heads,cam,exaust,intake) 350 v-8 with a TH-350 tranny 3.07 rear gears..

Soon to have a more extreme 350, Th-700r4 and 3.73s with an Eaton POSI

She's a brick off the line, but once she rev's a bit she's a screamer.

Jeff

79BIG10 · 03-27-2003, 09:16 AM

I've had mine over 100MPH easily with the speedo pegged and coming back around. Mine is also like Jeff's where it can get scooting on the highway but a dog off the line

LOHRTBT · 03-27-2003, 12:42 PM

I dunno....it quit reading at 85 and stopped moving at 5mph!! lol But i Was still gaining speed. heheehe

87 STEPPER · 03-27-2003, 12:52 PM

Yeah, same here i've had mine back around to 15 MPH and she still had plenty left in her but i didn't have the nutz to go any faster.

Im not shure what that work's out to in MPH cuz there's a lotta space between 85 and 5 as you all know.

My guess it's about 125 or 130 mph.

And my tires are only rated to 115

PHOENIX · 03-27-2003, 01:31 PM

Fastest Ive gone since the gauges have been in has been around 110. Engine was racing in the 4k range. Once I get rid of this sm465, then Ill see how fast she goes

gldevall · 03-27-2003, 01:32 PM

Maybe 90. lol

Tom · 03-27-2003, 01:59 PM

took my 78 to 130mph when I first got it. Not going to try that again anytime soon unless Im at the tract.

Low87 · 03-27-2003, 02:52 PM

A few years ago I was by a friends Z car on the highway in the middle of nowhere. We got side by side and pegged it. We both slowed down about the same time (his rear wing windows slammed shut and my truck felt like it was about to float), he said we maxed at 135. That was with a recently rebuilt 305 TBI.

LOHRTBT · 03-27-2003, 02:55 PM

Get it big dawg!! lol
I had my old 305 up to 130-135 racing a buddy in a Contour SVT.

J-Spec C10 · 03-27-2003, 02:57 PM

How's 140 Km/h with 32"x10" mudders? On a 2wd 305/700r4

I just kept thinking "Man, if one of these tires blows I'm so screwed"

Mike76251 · 03-27-2003, 06:26 PM

Thanks for the reply guys and gals,
I too thought my truck should go faster than 100 but I felt that "floating" feeling and I know what that means.
It means you are about to leave this earth!

I miss my car that would be doing 150 and only feel like 45.
Well.......not that much as it would not haul 10,000 lbs!

messed up c-10 · 03-27-2003, 06:49 PM

I've gotten mine up to about 75 or 80 before it maxed out.

Mike76251 · 03-27-2003, 07:11 PM

Messed up C-10,
I know what you mean my man!!
Here is the cure.
Only $5000 if you do all your own work (!)

apstguy · 03-27-2003, 08:31 PM

Like everyone said, it isn't an accurate reading because the speedometer ends at 85. I had mine to about 110-115. It was screaming and I was watching the gas gauge move faster than a clock. I could have probably gotten faster, but I would have blown the engine.

low 84 · 03-27-2003, 09:46 PM

Quote:

Originally posted by Mike76251
Messed up C-10,
I know what you mean my man!!
Here is the cure.
Only $5000 if you do all your own work (!)

what are the specs on it mike?

MSL · 03-27-2003, 10:40 PM

I have gotten my truck up to 80-85mph on the freeway and still had more to go but didnt want to push it since i was getting that floting feeling too. thats the un fun part.

Ol' Grey · 03-28-2003, 01:15 AM

I've had my truck to what I would estimate at 110mph. The speedo goes to 85 and the needle was straight down

My tires are BFG 295/50-15...H rated I think.
Had it in drive and the rear is geared 3.08

Mike76251 · 03-28-2003, 01:37 AM

Low 84,
It is a 383.
It has a new 4 bolt one piece seal roller block @ 4.00 bore.
A new 3.800 external balance steel crank.
New Eagle H beam rods w/ARP wavelock bolts.
KB Hyper flat top pistons @ -7cc.
New Eldelbrock 70cc heads with Manley Titanium Valves.
Crane roller cam.
New GM roller lifters (made by Crane)
True double roller chain.
Comp cams chromemoly Magnum roller rockers.
Trick Flow custom pushrods.
NOS 1969 Z/28 intake.
New Holley 670 dual line vacumn secondaries.
Moroso billet oil pump.
Milidon 6 qt pan.
Felpro and SCE gaskets.
And much more that I don't want to remember!

**swervin ervin** · 03-28-2003, 01:40 AM

Well, I'm not about to peg mine.

Prerunner1982 · 03-28-2003, 01:42 AM

ok.. with the old 305.. i could go about 90 before it just wouldnt go anymore.. 305/th350/3.08s and 235/75s

now... with stock 350... of course with 85 mph speedo.. i have a small peg that stops the needle.. the needle gets to bouncing.. bouncing between about 65 and 85.. almost faster than i can see it..when i finally let off. it had some left in her.. wasnt much over 4k rpm.

Mike76251 · 03-28-2003, 01:44 AM

Quote:

Originally posted by swervin ervin
Well, I'm not about to peg mine.

Oh come on........... Peg that tach just once!!!!!!!!!!
You only live once!!!! LOL

**swervin ervin** · 03-28-2003, 01:49 AM

If I pegged the tach, I for sure wouldn't be able to go 160 mph. It would be throwing rods out like a slingshot.

Mike76251 · 03-28-2003, 02:01 AM

Quote:

[i] It would be throwing rods out like a slingshot. [/B]

Yeah I know it would!!
So whats your point? HE HE HE!

I did have a car once that would go to 9000rpm but that was a 32 Valve All-Aluminium V8 made in a far away land.

Do it with a small block with all that mass in the valve train and you can say bye bye to everything but maybe the air cleaner.

03-27-2003, 08:45 AM	#1
Mike76251 Senior Member Join Date: Mar 2003 Posts: 2,499	Top Speed I have a little poll-type question for you all, My 1984 stock height C-10 1/2-3/4 ton with it's stock engine and 700R4 seems like it hits a brick wall @ 100mph. It seems like that flat front end is the cause because I know it has enough power to do better. I am not telling anyone to "go out and see" and I would further advise anyone doing that to have new name brand tires on the ride. What have you seen out of your trucks?

03-27-2003, 08:59 AM	#2
82BlackBeast Registered User Join Date: Feb 2003 Location: Wichita Falls, Texas Posts: 111	I was able to get about 125mph out of my old '77. It had a 350 with a TH350, not sure what gears. It was bone stock and would cruise at that without too much trouble. Its hard to say what it would top out at with it only having an 85mph speedo. I got the 125 when I was chasing a friends Camaro one night and he told me about what we were running. I never had it much over that I don't think. Due to some other "issues" I haven't had my current truck over 100mph, but there again I still have an 85mph speedo so its hard to say exactly. I think it would top 140mph without any problem but once you top 155 or so it takes a ton of power to push the truck through the air much faster. It doesn't help that we're all driving a "flying brick" as far as aerodynamics go...:p __________________ Matt '82 Chevy SWB

03-27-2003, 09:05 AM	#3
CHaingKaiShek I love goooooold! Join Date: Jan 2003 Location: In the middle of Hell, Arizona Posts: 133	my 73 c-10 1/2 ton pickup will bury the new speedometer needle (120mph) with reletive ease, however you can feel the wind hit the truck in gusts, and it does have an effect. My truck has a semi-built (heads,cam,exaust,intake) 350 v-8 with a TH-350 tranny 3.07 rear gears.. Soon to have a more extreme 350, Th-700r4 and 3.73s with an Eaton POSI She's a brick off the line, but once she rev's a bit she's a screamer. Jeff __________________ "Musha ring dum a doo dum a da Whack for my daddy-o Whack for my daddy-o There's whiskey in the jar-o."

03-27-2003, 09:16 AM	#4
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	I've had mine over 100MPH easily with the speedo pegged and coming back around. Mine is also like Jeff's where it can get scooting on the highway but a dog off the line __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

03-27-2003, 12:42 PM	#5
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	I dunno....it quit reading at 85 and stopped moving at 5mph!! lol But i Was still gaining speed. heheehe __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

03-27-2003, 12:52 PM	#6
87 STEPPER STILL PLAYS WITH TRUX Join Date: Nov 2002 Location: Melbourne, Fla. Posts: 2,764	Yeah, same here i've had mine back around to 15 MPH and she still had plenty left in her but i didn't have the nutz to go any faster. Im not shure what that work's out to in MPH cuz there's a lotta space between 85 and 5 as you all know. My guess it's about 125 or 130 mph. And my tires are only rated to 115 __________________ ~~Bruce~~ MY 87 STEPPER MY 99 2D/WD TAHOE

03-27-2003, 01:31 PM	#7
PHOENIX Registered User Join Date: Oct 2002 Location: Phoenix, Arizona Posts: 4,703	Fastest Ive gone since the gauges have been in has been around 110. Engine was racing in the 4k range. Once I get rid of this sm465, then Ill see how fast she goes __________________ * AVOID: LOPER'S PERMORANCE / LOPERSPEED.COM OF PHOENIX, AZ & COTTMAN TRANSMISSION *

03-27-2003, 01:32 PM	#8
gldevall Registered User Join Date: Mar 2003 Location: Walker, LA Posts: 2,925	Maybe 90. lol __________________ Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels

03-27-2003, 01:59 PM	#9
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,760	took my 78 to 130mph when I first got it. Not going to try that again anytime soon unless Im at the tract. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

03-27-2003, 02:52 PM	#10
Low87 been here longer than Liz Join Date: Feb 2000 Location: Broken Arrow, OK Posts: 2,437	A few years ago I was by a friends Z car on the highway in the middle of nowhere. We got side by side and pegged it. We both slowed down about the same time (his rear wing windows slammed shut and my truck felt like it was about to float), he said we maxed at 135. That was with a recently rebuilt 305 TBI. __________________ ~Greg~ Mac's Garage '87 SWB 6/8 drop "Piso" '08 CCSB Silverado DD the departed '89 GMC K5 Jimmy 4x4 "Rusty Nuts" '77 Chevy K5 Blazer 2wd '83 Chevy stepside "You get what you pay for" - Mike 'swervin ervin' Ervin

03-27-2003, 02:55 PM	#11
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Get it big dawg!! lol I had my old 305 up to 130-135 racing a buddy in a Contour SVT. __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

03-27-2003, 02:57 PM	#12
J-Spec C10 Whats this wire for?.... Join Date: Dec 2002 Location: Barrie, Ontario, CANADA Posts: 378	How's 140 Km/h with 32"x10" mudders? On a 2wd 305/700r4 I just kept thinking "Man, if one of these tires blows I'm so screwed" __________________ Kyle CANADIAN CONNECTION '82 C10 Resto-Custom--> * 2 1/4" manifold back dual exhaust with Hooker Aerochambers & High Flow Cats Taylor Ignition Wires Centerline 15" Telstars with 32"x10" mudders

03-27-2003, 06:26 PM	#13
Mike76251 Senior Member Join Date: Mar 2003 Posts: 2,499	Thanks for the reply guys and gals, I too thought my truck should go faster than 100 but I felt that "floating" feeling and I know what that means. It means you are about to leave this earth! I miss my car that would be doing 150 and only feel like 45. Well.......not that much as it would not haul 10,000 lbs!

03-27-2003, 06:49 PM	#14
messed up c-10 RHCP afficianado Join Date: Oct 2002 Location: McLoud, OK Posts: 789	I've gotten mine up to about 75 or 80 before it maxed out. __________________ ~Ryan~ 89 S-10 Blazer with a 4.3L 96 Ford Crown Vic P71 4.6L V8. This car rocks. Here are some links to some good music. Jack Johnson Donavon Frankenreiter

03-27-2003, 07:11 PM	#15
Mike76251 Senior Member Join Date: Mar 2003 Posts: 2,499	Messed up C-10, I know what you mean my man!! Here is the cure. Only $5000 if you do all your own work (!) Attached Images



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03-27-2003, 08:31 PM	#16
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,087	Like everyone said, it isn't an accurate reading because the speedometer ends at 85. I had mine to about 110-115. It was screaming and I was watching the gas gauge move faster than a clock. I could have probably gotten faster, but I would have blown the engine. __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

03-27-2003, 10:40 PM	#18
MSL Registered User Join Date: Mar 2003 Location: So.Oregon Posts: 765	I have gotten my truck up to 80-85mph on the freeway and still had more to go but didnt want to push it since i was getting that floting feeling too. thats the un fun part.

03-28-2003, 01:15 AM	#19
Ol' Grey A work in progress Join Date: Mar 2003 Location: Marion, NC Posts: 104	I've had my truck to what I would estimate at 110mph. The speedo goes to 85 and the needle was straight down My tires are BFG 295/50-15...H rated I think. Had it in drive and the rear is geared 3.08 __________________ Marc Cook 1986 Chevy Silverado C-10 LWB Gunmetal Grey Metallic 5.0L HO, 700-R4, '73 12-bolt rear Long tube headers, 2.5" dual exhaust dumped before the axle. 1988 GMC Sierra SLE 4WD 5.7L, 700-R4, stock everything 6000LB winch

03-28-2003, 01:37 AM	#20
Mike76251 Senior Member Join Date: Mar 2003 Posts: 2,499	Low 84, It is a 383. It has a new 4 bolt one piece seal roller block @ 4.00 bore. A new 3.800 external balance steel crank. New Eagle H beam rods w/ARP wavelock bolts. KB Hyper flat top pistons @ -7cc. New Eldelbrock 70cc heads with Manley Titanium Valves. Crane roller cam. New GM roller lifters (made by Crane) True double roller chain. Comp cams chromemoly Magnum roller rockers. Trick Flow custom pushrods. NOS 1969 Z/28 intake. New Holley 670 dual line vacumn secondaries. Moroso billet oil pump. Milidon 6 qt pan. Felpro and SCE gaskets. And much more that I don't want to remember!

03-28-2003, 01:40 AM	#21
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Well, I'm not about to peg mine. __________________ Mike 1985 Chevy C-10

03-28-2003, 01:42 AM	#22
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,904	ok.. with the old 305.. i could go about 90 before it just wouldnt go anymore.. 305/th350/3.08s and 235/75s now... with stock 350... of course with 85 mph speedo.. i have a small peg that stops the needle.. the needle gets to bouncing.. bouncing between about 65 and 85.. almost faster than i can see it..when i finally let off. it had some left in her.. wasnt much over 4k rpm. __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call

03-28-2003, 01:49 AM	#24
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	If I pegged the tach, I for sure wouldn't be able to go 160 mph. It would be throwing rods out like a slingshot. __________________ Mike 1985 Chevy C-10

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