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

5.0l TBI running on LPG ( propane?)

Thread Tools
 
Search this Thread
 
Old Mar 14, 2013 | 03:11 PM
  #1  
Fiero2m4's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2012
Posts: 60
Likes: 0
5.0l TBI running on LPG ( propane?)

Hi everyone,

Soon to be fitting LPG to my 1990 5.0l RS Camaro, was wondering if anyone has pictures of systems fitted? Maybe some information on some mods that will be done while doing the LPG conversion, shall be doing shorty headers, linking into 2.5/3" exhaust (no cat fitted and all smog control taken off) will be learning about EPROMs tunning. I wanted to do cam to, but money is short at the min.

Was mostly wondering if anyone has any experience in such things? Pictures, info and advice would be mostly appreciated.

I'm in the UK, so emissions are not Necessary, and LPG is needed as fuel is £1.40 a litre where LPG is 64p a litre and pretty much the same efficiency as fuel. I also want to keep TBI.

Thanks, Carl.
Reply
Old Mar 14, 2013 | 03:25 PM
  #2  
Tuned Performance's Avatar
Sponsor
20 Year Member
Community Builder
Community Influencer
Community Favorite
iTrader: (95)
 
Joined: Dec 2004
Posts: 16,927
Likes: 1,016
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 5.0l TBI running on LPG ( propane?)

http://www.fullsizechevy.com/forum/g...-tbi-mods.html

I have seen a mixer bye impco in the mid 90's when I attended classes at a gm training center.

http://nashfuel.ecrater.com/p/141617...to-gm-220-fuel

Last edited by Tuned Performance; Mar 14, 2013 at 03:33 PM.
Reply
Old Mar 14, 2013 | 07:15 PM
  #3  
morgsie's Avatar
Member
iTrader: (1)
 
Joined: Feb 2008
Posts: 454
Likes: 6
Re: 5.0l TBI running on LPG ( propane?)

Are you going to do dual fuel or just convert to LPG entirely? I HIGHLY recommend keeping the ECU to control spark. I think you will be much happier with the driveability with the computer controlled timing vs a mechanical distributor with vacuum advance. LPG likes a slightly different curve and (usually) less advance vs its petrol counterpart. Have you looked at DynamicEFI's EBL? You should also be able to run thinner headgaskets aswell to up compression and as a bonus get a better quench. This will help reap the benefits of LPG.

If you are interested I also have (in PDF format) a copy of Diagnostic Guide to Alternative Fuels by Franz Hofmann. PM me your email address and I can send it to you. Might be worth a read, I originally got it to help a friend get his LPG powered dump truck running better.

Last edited by morgsie; Mar 14, 2013 at 07:20 PM.
Reply
Old Mar 15, 2013 | 05:17 AM
  #4  
Fiero2m4's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2012
Posts: 60
Likes: 0
Re: 5.0l TBI running on LPG ( propane?)

Had a good read of that post Tuned, thank you.

Will be going duel fuel, sticking a sandwich plate between the manifold and the throttle body. I plan on making it so the lpg just shuts of the fuel and injectors.

First time I've seen that EDL that's a pretty handy bit of kit! Think when I finally get some more money in I may have to invest.

The plan was to higher compression in the Long run, what are the size of valves in the heads of a 305? Also any ideas if they can be skimmed, and if so how much?

And that would be awesome! Thank you very much.
Reply
Old Mar 17, 2013 | 12:40 PM
  #5  
Fiero2m4's Avatar
Thread Starter
Junior Member
 
Joined: Aug 2012
Posts: 60
Likes: 0
Re: 5.0l TBI running on LPG ( propane?)

Anyone else got any pictures/ info?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
BRoss99
Electronics
28
Aug 10, 2025 05:08 PM
92camaroJoe
TBI
32
Jul 29, 2023 07:57 PM
MustangBeater20
TBI
11
Oct 29, 2022 09:20 PM
pimp2303
TBI
7
Jul 27, 2017 02:03 PM
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM




All times are GMT -5. The time now is 09:15 PM.