The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 10-04-2005, 07:59 PM   #1
Low84
Registered User
 
Low84's Avatar
 
Join Date: Oct 2004
Location: Roma,TX
Posts: 774
Quick Question (Performance)

What quater mile time should my truck make more or less with 420 engine hp?
__________________
1978 stepside C10 build: http://67-72chevytrucks.com/vboard/s...d.php?t=468265
Low84 is offline   Reply With Quote
Old 10-04-2005, 08:07 PM   #2
low 84
Registered User
 
low 84's Avatar
 
Join Date: Jan 2002
Location: Houston, TX
Posts: 2,144
intresting name choice

no way to tell really there are too many variables such as suspension setup, traction, weight of your particular truck, ect
__________________
'51 F100, backhalf with a narrowed 9 and coil overs, 18.5" mickeys, monte front clip, +400" sbc in the works

'05 1500 Crew Cab

RIP
'84 swb 5/7 drop, solid cammed 408 w/ fully ported dart heads, th350 w/ 10 inch hughes, 12 bolt w/ 3.73 richmonds and a locker
'80 swb 4x4 in progress: 7" lift, 350 th350/np205, d44 and 1.5" ORD tie rod, 14BFF w/discs , armored diff covers, 40" MTR's
low 84 is offline   Reply With Quote
Old 10-04-2005, 08:54 PM   #3
DroppedZ84
Account Suspended
 
DroppedZ84's Avatar
 
Join Date: Sep 2005
Location: Nor*Cal
Posts: 186
Quote:
Originally Posted by Low84
What quater mile time should my truck make more or less with 420 engine hp?
Well, if it's a dyno-proven 420hp and you have the correct torque converter/gearset and traction isn't an issue, probably pretty quick. I know that 250hp will get you a low 15 with traction.
DroppedZ84 is offline   Reply With Quote
Old 10-04-2005, 10:10 PM   #4
bigblock73
yeller
 
bigblock73's Avatar
 
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,826
I think you need a diff screen name first of all...too confusing.

I was like, "wtf is he asking this kind of question for...he should know this". But then I realized this was low 84 without the space.


Is the 420 at the crank, or rear wheels? My truck ran a best of 14.6 @ 92, and was making around 300 or so hp at the crank. I also had 4.10 gears, posi, and drag radials

Last edited by bigblock73; 10-04-2005 at 10:14 PM.
bigblock73 is offline   Reply With Quote
Old 10-04-2005, 10:38 PM   #5
Low84
Registered User
 
Low84's Avatar
 
Join Date: Oct 2004
Location: Roma,TX
Posts: 774
Alright is there a way for a mod to change my screen name or do I have to be a newbie all over again?

About the truck I know there is alot of variables that determine the time, but I am just looking for an estimate like whole seconds. Maybe 13 second range or so? I am planning on using 3.73s or 4.10s. I have been trying to get an idea from cardomain, but there are ALOT or liars on there so I can't really trust the hp #'s or 1/4 mile times. So I was just really asking if anybody here is pushing around that power. Or what times that you have run with what power?

I am just asking for an estimate.

Thanks.
__________________
1978 stepside C10 build: http://67-72chevytrucks.com/vboard/s...d.php?t=468265

Last edited by Low84; 10-04-2005 at 10:40 PM.
Low84 is offline   Reply With Quote
Old 10-04-2005, 10:45 PM   #6
79BIG10
I'm back with 2nd truck!
 
79BIG10's Avatar
 
Join Date: Feb 2002
Location: Texas
Posts: 3,775
Quote:
Originally Posted by bigblock73
I think you need a diff screen name first of all...too confusing.

I was like, "wtf is he asking this kind of question for...he should know this". But then I realized this was low 84 without the space.

I thought the same thing Jeff. LOL!!

You might look at trying to find a caculator online that might give you an rough estimate. Usually prestage.com has one but the website is down right now
__________________
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
79BIG10 is offline   Reply With Quote
Old 10-04-2005, 10:53 PM   #7
bigblock73
yeller
 
bigblock73's Avatar
 
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,826
Quote:
Originally Posted by Low84
Alright is there a way for a mod to change my screen name or do I have to be a newbie all over again?
Pm "Liz" or "Josh"...either of them should be able to change your name. Just tell them there are two low 84's on the 73-87 side of the site...and it gets confusing.

You should be in the high 13's, low 14's with 420 horse...but getting traction would be the key IMO.
bigblock73 is offline   Reply With Quote
Old 10-04-2005, 10:57 PM   #8
82c10
needin' money
 
Join Date: May 2005
Location: Chickasha, Oklahoma
Posts: 1,106
my firend has a truck that had 296 hp at the rear wheels, his best time was 13.8 with street tires, it had 373's, and it would just spin the tires, he had cal-trac's too, know it has gotten alot of different things to it, built the motor again, he ran it on ethanol-methanol, what ever the crap it is and about a block and a half down the street at about 7,000 rpm he granaded the rear end, like i said it was basically brand new,new eaton posi, new ring and pinion new seals and everything,new axles, bam all that down the drain, now with the setup it has now he is hoping for high 10's which i think is doable, but this motor he has now has a whole lot more power, and trust me he can handle the power
__________________
SWB Stands for Short Wide Bed
82c10 is offline   Reply With Quote
Old 10-04-2005, 11:08 PM   #9
gldevall
Registered User
 
gldevall's Avatar
 
Join Date: Mar 2003
Location: Walker, LA
Posts: 2,925
I think I have about 300 or so at the crank. My best time with 3.73 an dposi is 14.51 @ 92....or something like that. This was with a 27" tire.

Edit: OK check out my sig and there it is.
__________________
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

Last edited by gldevall; 10-04-2005 at 11:09 PM.
gldevall is offline   Reply With Quote
Old 10-04-2005, 11:31 PM   #10
Low84
Registered User
 
Low84's Avatar
 
Join Date: Oct 2004
Location: Roma,TX
Posts: 774
Talking

Thanks alot, thats what I am looking for.
__________________
1978 stepside C10 build: http://67-72chevytrucks.com/vboard/s...d.php?t=468265
Low84 is offline   Reply With Quote
Old 10-08-2005, 06:43 PM   #11
84_chevrolet
Truck CRAZY!
 
84_chevrolet's Avatar
 
Join Date: Mar 2004
Location: douglas
Posts: 81
my boss has a 83 with a strked 454 making over 500 hp with a stall 350 trans and 4,56 gears and hes running 7.20s on motor in the 1/8th
84_chevrolet is offline   Reply With Quote
Old 10-09-2005, 10:31 AM   #12
84slopwaggin
Registered User
 
84slopwaggin's Avatar
 
Join Date: Apr 2005
Location: Ar
Posts: 558
82c10 hows your combo

Quote:
Originally Posted by 82c10
my firend has a truck that had 296 hp at the rear wheels, his best time was 13.8 with street tires, it had 373's, and it would just spin the tires, he had cal-trac's too, know it has gotten alot of different things to it, built the motor again, he ran it on ethanol-methanol, what ever the crap it is and about a block and a half down the street at about 7,000 rpm he granaded the rear end, like i said it was basically brand new,new eaton posi, new ring and pinion new seals and everything,new axles, bam all that down the drain, now with the setup it has now he is hoping for high 10's which i think is doable, but this motor he has now has a whole lot more power, and trust me he can handle the power

Hey 82c10 how is the combination you have in the 357/voodoo cam working for you? Which voodoo cam did you choose? I was wandering how the voodoo cams compare to compcam, crane, etc.?
84slopwaggin is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:29 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com