Go Back   Chevrolet Forum - Chevy Enthusiasts Forums > Current Chevy Trucks, SUV's, Crossovers & Vans > Silverado & Fullsize Pick-ups
Sign in using an external account
Register Forgot Password?
Search

Silverado & Fullsize Pick-ups The Silverado has been one of the best selling trucks in the US for decades, and is truly proven to be "like a rock".

2014 Chevy Silverado
Platform: Truck, GMT 400, 800, & 900
Sponsored by: Bakliner

Reply
 
 
 
 
LinkBack Thread Tools
  #1  
Old 06-29-2008, 08:45 PM
 
Join Date: Jun 2008
Posts: 1
Default 1994 Silverado 5.7 Question

I Just bought this 94 silverado extended cab 5.7 truck and it just doesnt seem to have much power it only has 102k on it and has been very well taken care of. But I used to have a 1998 Silverado Z71 with the 5.7 Vortec in it and that truck had a ton of power and was an animal this 94 seems to lack the power that i used to have. I know the 94 is a throttle body and those suck but is it really that much of a difference???? If anyone knows please let me know I just am curious if there is something wrong with the truck. Like i said the power isnt bad but its nothing compared to the z71 i had. Also if i bought a vortec 5.7 would i be able to just drop it right in and no problems or is this going to be a serious project??? Thanks let me know if anyone has an idea about any of this.
Register today for free or log-in if already registered to remove this ad!
__________________
Douglas M Macy
Reply With Quote
  #2  
Old 06-30-2008, 09:16 AM
 
Join Date: Jun 2008
Location:
Posts: 75
Default RE: 1994 Silverado 5.7 Question

try to run some cleaners through the system and see if that helps any. Also, check the engine itself to see if anything is loose damaged etc. You never know what might be the problem if there is any. There is not THAT much of a difference in the two. I have a 92 350 throttle body that can hold it's own with my 95 Z71
__________________
Reply With Quote
  #3  
Old 06-30-2008, 01:04 PM
CF Active Member
 
Join Date: Feb 2008
Location: Virginia
Posts: 243
Default RE: 1994 Silverado 5.7 Question

well the tbi 350's were around 220 hp and the vortec 350's were around 250-255hp. so a 30-35hp jump is anoticable difference. the tbi truly will feel less powerful. but they were good for their day.

you might look into what gearing you have. if the 98 had 3.73's and the 94 has 3.42's it will make a difference also.

i know my dad's 03 with 3.73 gears feels a little more responseive off the line and towing than my 06 with 3.42's. although i have 295hp vs his 285.
__________________
2006 Chevrolet Silverado Ext. Cab LT3 VortecMax (LQ9), Black, K&N 63 series intake, 40 series dual in dual out Flowmaster, Leveled on 295/70/17, Line-x, SS cluster, corvette servo. Blackbear 93 Tune
Reply With Quote
  #4  
Old 07-01-2008, 06:19 AM
 
Join Date: Feb 2008
Location:
Posts: 15
Default RE: 1994 Silverado 5.7 Question

The non-Vortec TBI 350's (pre 1996) were rated at 200 hp (310 ft-lbs torque). Theadditional 50 hp from the Vortecs makes a huge difference in performance. And, like bad2006z71 stated, differences in gearing may add to your performance woes.

Don't beat-upthe throttle body system to much unless you've spent a lot of time with carburetors. The response from a (stock) throttle body compared toa (stock) carburetorsetupwas night and day, in its day...

At 102,000 miles, a good tune-up (if not already done) would certainly be in order.
__________________
96 K1500 Silverado Ext. Cab - Short Bed (original owner) 350 - 5spd Manual w/ 3.73's
14 bolt rear w/ extra leaf and Timbren Kit, Custom Stainless Dual Exhaust, Hurst Shifter, K&N Air Filter

Reply With Quote
  #5  
Old 07-01-2008, 08:15 AM
 
Join Date: Oct 2007
Location:
Posts: 3
Default RE: 1994 Silverado 5.7 Question

I can say that gears, intake, headers, and maintenanced tuneups are what give the 89-1996 C/K more power. That vortec is a strong motor and yeah a swap should be easy, but the other vehicles in that time rangeare better at pulling. Speed wise and power wise you have to do those upgrades
__________________
1990 Kubota
Reply With Quote
  #6  
Old 01-25-2014, 12:06 AM
Troublesome94k1500's Avatar
CF Beginner
 
Join Date: Jan 2014
Posts: 1
Default Need advice please!

I just purchased a 94 k1500 with a 350tbi and 700r4 trans from a friend. The issue is that it when I start it the engine runs very low rpm.. close to 250rpm and after 5-10 seconds the check engine light comes on and it revs to about 1000rpm. It does burn some oil but its got 238k on it. I put new oil, plugs, and air filter on in the last week and nothing changed. Also it stalls sometimes when going down hill? Any ideas?
Reply With Quote
  #7  
Old 02-22-2014, 03:09 PM
metalchevydeathtrap's Avatar
CF Beginner
1994 Chevrolet Silverado 1500
My Garage
 
Join Date: Feb 2014
Posts: 3
Default

i also have the same problem as you, trouble. I've come to the conclusion that it has something to do with your knock sensor telling you that you have a misfire. pull the coil, plugs, wires, distributor, cap and rotor apart and clean all that corrosion off with a file if need be. check for corrosion where the distributor mounts as well. don't be afraid to move your ground to the next header bolt after you clean it completely. don't forget about the firewall and trans ground on the same side in the back.
your positive battery cables to your starter and such can also rot and cause the whole vehicle to stop working when it shorts on something.
good luck, brotha. you will notice it shifting better after you do all of this.
let me know if you got further than i did though
Reply With Quote
Old 02-22-2014, 03:09 PM
 
 
 
Reply

Tags
1500, 1994, 1996, 342, 350, 57, 94, bear, black, chevrolet, difference, gears, headers, hp, notice, silverado, tbi, tow, vortec


Thread Tools

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On


Join Chevroletforum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -5. The time now is 11:15 PM.

Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.

Emails Backup