Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > TBI
Sign in using an external account
Register Forgot Password?

TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 04-26-2001, 02:08 PM   #1
Junior Member
 
Join Date: Apr 2001
Location: Poughkeepsie, NY
Posts: 18

Classifieds Rating: (0)
TBI 350 from Caprice Police Car?

My friend has this 350 TBI from a 91 or 92 Chevy Caprice Police Car. He claims its a 300hp motor. Is this true? If not, what would the hp rating be? Are there any differences between the standard Caprice 350 and the Police Package 350. And any differences from the same year 350 TPI. Just curious to see if this is worth buying and putting in one of my Formulas. THANKS.
Rareform92 is offline vBGarage Page   Reply With Quote
Old 04-26-2001, 03:10 PM   #2
Senior Member
 
Join Date: Jul 1999
Location: PA
Posts: 921

Classifieds Rating: (1)
No way they had 300hp. I've seen the 91-92 Police 5.7L rated at 195hp and 205hp.
Brent is offline vBGarage Page   Reply With Quote
Old 04-26-2001, 03:41 PM   #3
Tas
Supreme Member
 
Join Date: Jul 1999
Posts: 4,301

Classifieds Rating: (0)

Before there was a 330Hp 330H.O. 350 with vortec heads there was the 300H.O. 350 with 300HP. it had the regular non-swirl heads. Maybe the engine was replaced with this crate engine. In a 4x4 mag of mine they put one with TBI into a '93 wrangler.

------------------
-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Soon to be installed:
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz
Tas is offline vBGarage Page   Reply With Quote
Old 04-26-2001, 04:02 PM   #4
Supreme Member
 
Pablo's Avatar
 
Join Date: Jul 1999
Posts: 3,226
Car: Turbo Buick
Engine: 3.8 V6

Classifieds Rating: (1)

Well it woudlnt be a police motor then would it?

The most ive ever heard of those being rated was at 220 hp
Pablo is offline vBGarage Page   Reply With Quote
Old 04-26-2001, 05:08 PM   #5
TGO Supporter
 
Join Date: Oct 2000
Location: Wytheville, VA, USA
Posts: 1,229

Classifieds Rating: (0)

Send a message via Yahoo to Keith5
The truck L05 was rated at 210hp, it had 8.7:1 compression. The 92-93 caprice motor had 9.6:1 compression.
Keith5 is offline vBGarage Page   Reply With Quote
Old 04-26-2001, 05:32 PM   #6
Senior Member
 
Join Date: Oct 1999
Posts: 6,616
Car: 91 Red Sled
Engine: 01' LS1
Transmission: T56
Axle/Gears: 10bolt Richmond 3.73 Torsen

Classifieds Rating: (0)

Send a message via AIM to JPrevost
220 sounds abour right. Considering GM is always about 5-10hp underrated (even the L03 was stock dynoed at 174hp and 265 lb-ft).

------------------
, Jon (350 TBI!)
91 Red My website
JPrevost is offline vBGarage Page   Reply With Quote
Old 04-26-2001, 08:06 PM   #7
Member
 
Join Date: Feb 2001
Location: Miami,FL,USA
Posts: 162

Classifieds Rating: (0)
I think you friend might be uninformed......Now if it is a highway interceptor than maybe it has some dip but from my knowledge and actually seeing them because my dad paints cars......They take out most of the goodies......They are faster than normal but 300 is alot of power back then
Happy17yearold is offline vBGarage Page   Reply With Quote
Old 04-27-2001, 03:36 AM   #8
Junior Member
 
Join Date: Apr 2001
Location: Poughkeepsie, NY
Posts: 18

Classifieds Rating: (0)
Yes, my friend is one of those stubborn boneheads that you can't tell him anything different. Anyway I had suspected that the Police motor was not to much different than the standard Caprice motor. I told him that the TPI Camaros were 230 or 240hp and no factory Caprice would have 60hp more in those years. Thanks to everyone who responded.
Rareform92 is offline vBGarage Page   Reply With Quote
Old 04-27-2001, 04:14 AM   #9
Tas
Supreme Member
 
Join Date: Jul 1999
Posts: 4,301

Classifieds Rating: (0)

ya the only car that I can think of rated more than the Corvette in the same year from GM was the LS7 Chevelle. The Buick GNX had more power too but they still rated it below the vette.
Tas is offline vBGarage Page   Reply With Quote
Old 04-27-2001, 07:23 AM   #10
Senior Member
 
kdrolt's Avatar
 
Join Date: Mar 2001
Location: MA
Posts: 849
Car: 93 GM300 platforms
Engine: LO3, LO5
Transmission: MD8 x2

Classifieds Rating: (0)

Quote:
<font face="Verdana, Arial" size="2">Originally posted by Brent:
No way they had 300hp. I've seen the 91-92 Police 5.7L rated at 195hp and 205hp.</font>
Brent, you are the only one that basically got this right.

1989 LO5 5.7 190 hp
1990 LO5 5.7 190 hp
1991 LO5 5.7 195 hp
1992 LO5 5.7 205 hp
1993 LO5 5.7 205 hp

The above refers ONLY to the 9C1 (police package) LO5. They were all tbi engines. There was also a civilian LO5 available in the Caddy Fleetwood, Buick Roadmaster, and Olds Custom Cruiser, and in model years from 1991-1993, but not consistently for each car type. The Chevy Caprice also got an optional LO5 for 1993 but only in the LTZ Caprice sedan.

The LO3 tbi engines, both civilian and 9C1 models, were rated at 170 fwhp.

For the LO5, the changes in hp (and slight changes in torque, but all were around 290-300 ftlbs @ 2400 rpm) had to do with better flowing cats, lower restriction in the Y-pipe, and a cold air feed to the air cleaner box.... (EDIT: and the L98 "773" cam). There had to be, btw, accompanying changes to the EPROM tables to provide the fuel to match, and hence boost the power slightly.

The LO5 made way for the iron head LT1 5.7 Gen II motor for 1994-1996, and those were ALL rated at 260 fwhp @ 5000 rpm, and 330 ftlbs from roughly 2200-3400 rpm. The LO5 never got rated above 205 hp in the 9C1 Caprice, but I think the trucks used them up to 1995 and they may have been rated at 210 hp. The LO5 was dropped from the trucks for the 1996 model year, which is when the Vortec-head L31 5.7 came out. I think the cam used in that engine was the same cam as in the 94-96 Caprice/Impala LT1.

Most of this info is in Ed Sanow's book "Chevrolet Police Cars 1955-1996". HTH, FYI.
- Ken, '94 LT1 9C1, and Fcar lurker

Last edited by kdrolt; 09-02-2005 at 12:32 PM.
kdrolt is offline vBGarage Page   Reply With Quote
Old 04-27-2001, 07:23 AM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > TBI

Tags
1990, 1993, 350, 57, 92, 96, caprice, chevy, difference, engine, flow, lo5, master, package, police, tbi
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 09:47 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.5.2
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details