Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > TPI
Register Forgot Password?

TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by South Bay Fuel Injectors
Click Here

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 01-03-2008, 06:38 PM   #1
Junior Member
 
rmmstnr's Avatar
 
Join Date: Dec 2006
Posts: 96
Car: 89 TA
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 10 bolt 3.08

Classifieds Rating: (0)
Most Torque From A 305?

As the title may suggest, I'm planning up for a build on a 305, based mainly towards max low end torque (and mileage to some extent). I'm not concerned with max HP to any degree, the only dyno time this engine will have is while being tuned, and it will be my DD.

My goals are to build a reliable engine that will get an MPG or two more than what I'm getting now (???-23MPG) and that will make better than 320 ft/lbs nice and low (at the engine, not the wheels). The platform is an 89 TPI 305 that will eventually replace the TBI 305 in my 89 TA. Here's what I have in mind so far:

Cam selection

- 501A1LUN (Lunati)
- 501A2LUN
- 501A3LUN
- 104204 (Crane Cams)
- 104201

Exhaust

- Hooker Streetforce Headers & Y Pipe (2055)
- Hooker Streetforce Cat-back (16820)

Engine

Either try to smooth out the stock heads (probably to save some $), or get

- World Products SR Torquer Heads (042660).

I'm also toying with the idea of getting a stroker kit (just to get a new rotating assembly, I'd rather keep the ci at 305), or maybe just a short or long block from Blueprint engines if they can help me out with that.

Thinking about doing some smoothing and mild porting of the plenum (or should I avoid that?). Open to other suggestions though, thanks for your input. Also, what would be the most torque you could make from a 305 with a similar setup? What setup do you use/suggest?

P.S. I am NOT considering going to a 350, even if "tReE-fiDeezS sUK nOO8." I'm just interested in a fun low ci build that'll last for a good long time that doesn't need an oil well or a pit crew to keep running. I have all the small details worked out, I just left them out for space reasons and because this is the stuff I'm not 100% about.

Quote:
i don't know about those cams, but i thought that stock 305 TPI makes somewhere around 290 ft/lbs, so any improvement over stock will give you the 300 at motor that you want
Whoops, in fact they made 300 in 89. Better up the bar

Last edited by rmmstnr; 01-03-2008 at 08:38 PM.
rmmstnr is offline vBGarage Page   Reply With Quote
Old 01-03-2008, 07:44 PM   #2
Senior Member
 
yevgenievich's Avatar
 
Join Date: Feb 2007
Location: college station, texas
Posts: 536
Car: 89 T/A,67 Camaro,92 Stealth
Engine: ls1, 468, 183
Transmission: 4l60e, th350, 5 speed
Axle/Gears: 3.23 posi 7.625",3.08 8.2", FWD

Classifieds Rating: (1)
Send a message via AIM to yevgenievich
Re: Most Torque From A 305?

i don't know about those cams, but i thought that stock 305 TPI makes somewhere around 290 ft/lbs, so any improvement over stock will give you the 300 at motor that you want
yevgenievich is offline vBGarage Page   Reply With Quote
Old 01-03-2008, 09:28 PM   #3
Senior Member
 
90CamaroTBI's Avatar
 
Join Date: Oct 2005
Location: Waldorf, MD
Posts: 874
Car: 91 Formula, 89 IROC
Engine: LB9, LB9
Transmission: 700R4, 700R4
Axle/Gears: Posi 2.73, Posi 2.73

Classifieds Rating: (0)
Send a message via AIM to 90CamaroTBI
Re: Most Torque From A 305?

Too be exact they had 295 ft/lbs of torque with an auto, but close enough. With some bolt ons you should get a bit more torque that you are looking for.
90CamaroTBI is offline vBGarage Page   Reply With Quote
Old 01-03-2008, 10:02 PM   #4
Supreme Member
 
Zepher's Avatar
 
Join Date: Feb 2000
Location: Norfolk, VA. USA
Posts: 7,964
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5

Classifieds Rating: (1)

Send a message via ICQ to Zepher Send a message via AIM to Zepher
Re: Most Torque From A 305?

My peanut cammed 88 puts down 273RWTQ, which comes out to either 313 or 321 at the motor (depending on how you calculate it).
__________________


1988 Firebird Formula WS6
305HSR T5 195RWHP/273RWTQ
Mods: Eibach Sportlines, ASCD RA1 Hood, 01 LS1 rear with LS1 brakes, Moser Axles, Torsen Posi, 3.42 gears, TA Diff Cover,
ES Tranny & Tq Arm Mount, 160* Stat, K&N Cone Filter, TB Coolant Bypass, Holley Stealth Ram, MSD Billet Dist. Pro 5.0 Shifter,
Hooker Headers, Borla Catback, Lakewood LCA's, BMR Adj. Panhard, 2" Skulte Adaptors, 17" ZR1's w/ Nitto 555RII's,
Craig Moates Adaptors and Chips

WWW.TransAmWS6.Com http://youtube.com/watch?v=BQ54A0NY2l0
Zepher is offline vBGarage Page   Reply With Quote
Old 01-04-2008, 01:03 AM   #5
Junior Member
 
rmmstnr's Avatar
 
Join Date: Dec 2006
Posts: 96
Car: 89 TA
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 10 bolt 3.08

Classifieds Rating: (0)
Re: Most Torque From A 305?

How much torque do you think that a built 305 would put out if you really tried (on a budget)?
rmmstnr is offline vBGarage Page   Reply With Quote
Old 01-04-2008, 02:08 PM   #6
Supreme Member
 
customblackbird's Avatar
 
Join Date: Feb 2007
Location: northern jerz
Posts: 2,992
Car: heavily modded formula
Engine: 521cuin big block ford!
Transmission: bullet proof ford C-6
Axle/Gears: ford 8.8, 3.55 gears

Classifieds Rating: (10)
Re: Most Torque From A 305?

u could make 350ft at the motor, the smaller cubes just dont make alot like a 350 would. a good cam and heads u can make 350ftlbs. but these u have to remember will be at higher RPMS due to the increased beathing of the heads/cam/intake. the best way to make more hp and tq would to stroke it to a 335.

also depending on your motor and how the milage is... u arent making that 295 anymore. put a peanut cam in a 305 o4 350 with low duration and lift and a TPI and it will be a low HP high tq motor. which is exactly what the TPI motors that came in these cars are.

dont bother workin the stock heads.... they suck as is and u will prob save money and make more power with the SRtorquers they are good heads and cheap. match that with a cam thats between 212-220 duration and port the hell outa the TPI and ur set, i woujld say 340ftlbs and 270-300hp
customblackbird is offline vBGarage Page   Reply With Quote
Old 01-18-2008, 04:36 AM   #7
Junior Member
 
2E151's Avatar
 
Join Date: Jan 2008
Location: Augusta Georgia
Posts: 64

Classifieds Rating: (0)
Re: Most Torque From A 305?

Quote:
Originally Posted by customblackbird View Post
dont bother workin the stock heads.... they suck as is and u will prob save money and make more power with the SRtorquers they are good heads and cheap. match that with a cam thats between 212-220 duration and port the hell outa the TPI and ur set, i woujld say 340ftlbs and 270-300hp
Out of a 305?
2E151 is offline vBGarage Page   Reply With Quote
Old 01-18-2008, 09:10 AM   #8
Senior Member
 
tenpin842's Avatar
 
Join Date: Jan 2006
Location: Michigan
Posts: 793
Car: 1987 Trans Am
Engine: 5.0L TPI
Transmission: 700R4
Axle/Gears: Richmond 3.73

Classifieds Rating: (0)
Re: Most Torque From A 305?

STOCK 305 is usually 220hp at the motor.
U swap the upper half....toss on some headers....yeah it will get there.
tenpin842 is offline vBGarage Page   Reply With Quote
Old 01-19-2008, 12:13 AM   #9
Supreme Member
 
customblackbird's Avatar
 
Join Date: Feb 2007
Location: northern jerz
Posts: 2,992
Car: heavily modded formula
Engine: 521cuin big block ford!
Transmission: bullet proof ford C-6
Axle/Gears: ford 8.8, 3.55 gears

Classifieds Rating: (10)
Re: Most Torque From A 305?

yes. ive seen many builds of 305. and with a setup like i said before u could get those numbers. and when u build the upperhalf u gotta get the exhuast to flow. a edelbrock TES headers/3"ypipe, high flow cat, and 3" catback and you can get that.
customblackbird is offline vBGarage Page   Reply With Quote
Old 01-19-2008, 12:13 AM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

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

Tags
20, 300, 305, 50, 501a2lun, 501a3lun, blueprinting, build, cam, foot, lbs, lunati, make, port, reliable, tbi, torque
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 08:57 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