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LSx Propane conversion

Old 04-07-2009, 11:34 PM
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Default LSx Propane conversion

I did a search and found very little info so if I missed something.......

Anyway, as some of you know I am building a 2300lbs FFR GTM Super car. I am using a pumped up L33 with hot cam, brother’s intake and LT headers, around 380-400hp. Since the GTM uses the dual gas tanks from the Corvette it got me thinking about dual fuels. One tank for gasoline, the other side for custom propane tanks with possible meth injection.

What do you think????? Ideas.......thoughts......problems........effect on the HP.....

Thanks in advance.
Old 04-08-2009, 05:02 PM
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All this vast knowledge and no one knows?
Old 04-08-2009, 10:38 PM
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just why?
Old 04-09-2009, 12:00 AM
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emission exempt would be one plus
Old 04-09-2009, 12:20 AM
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propane is not as effecient as gasoline.. why bother?
Old 04-09-2009, 07:23 AM
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Well to start it is 104-110 octane, it is 90% sourced here in the USA and oh ya huge tax credits (both state and fed). From what I read there is no loss in power and the idea of a 3 sec 0-60 car running on propane is different. I am not a tree hugger but it is much "greener". Also many propane only cars run 15-1 compression. I would think a gas powered car running 11-1 would benefit from propane if they wanted to use no2 or turbo on high compression.

Did anyone see the Mothers (Foose) SS that had over 1000 hp on propane?

Doesn't anyone think a 400hp gas grill would be cool?
Old 04-09-2009, 08:09 PM
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That Mothers car was prety slick. I think it used some one off system, or something that's not available on the market yet, but it's different than traditional propane setups. This setup injected the fuel as a liquid directly into the cylinder and not as a gas. The result is something similar to 2-3psi as a boosted application due to the liquid expanding into gas form and the intake temps being realy cold from it. Normal propane setups would normaly loose roughly 10-20 percent power over gasoline. Now, I'm not a perfesional when it comes to propane injection by any means, so if I'm wrong, someone please correct me. On the up side, I think it would be prety sweet *** to do somesort of propane conversion.
Old 04-09-2009, 08:13 PM
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hmm. smog exempt huh?

what causes the loss in power?
Old 04-10-2009, 12:08 AM
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i know brad story runs straight propane on his turbo'd yamaha apex and makes somewhere north of 350hp. heres a couple links but they dont provide alot of info

http://www.snowmobile.ca/mha_interna...le.php?sid=431

the apex is the one at 1:08 in this vid and again at 1:23
http://www.youtube.com/watch?v=KH2t2-c-dpQ


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