building a sbc for propane

dove'd85 · Jul 12, 2009

i have been tossing up the idea for months....

and i have decided that i don't want to run tbi/EFI or any other fuel injection/carb setup....

i want to run propane for a couple of reasons.

one being the fact that there is basically no wiring to the entire system

two being the cost factor involved with custom wiring harness' and computer all the jazz that is associated with an engine managment system

got propanes conversion kit for a sbc is pretty expensive, so i have been thinking about buying one that came factory on some chevy truckin in canada

now for the real questions

does anyone no how much HP a stock propane system can feed?

i am going to have a block built buy a friend that owns a race shop and is a sbc god:awesomework:

when it's done and built i am even going to dyno test it

he has never built a sbc to run a pane he mostly builds monster SBC for sprint cars running almost 900 ponies

as much as i would love to run one of them, tht is no were near my price range:booo:

anything special need to be done internally? low comp?cam? ect... skool me

:beer:

i am searched a bit through google looking for info on this but have not found what i am looking for

thanks in advance

nate8887 · Jul 12, 2009

http://www.pirate4x4.com/forum/showthread.php?t=732008
look at post 3

dove'd85 · Jul 12, 2009

nate8887 said:
http://www.pirate4x4.com/forum/showthread.php?t=732008
look at post 3

thanks for the link

i am seaking info from those on here that are running a pane v8 or know alot about sbc and propane... is there a particular sbc tht would be a better then another truck/car? one or two peice remain?

PUO-BANNED · Jul 12, 2009

dove'd85 said:
thanks for the link

i am seaking info from those on here that are running a pane v8 or know alot about sbc and propane... is there a particular sbc tht would be a better then another truck/car? one or two peice remain?

I'm looking to run pane on my big block and what I have learned so far is you can get away with a much higher compression ratio. @ 11:1 or more depending on the cyl heads and the cam grind should have more duration on the exhaust. as far as a cylinder block a 2 bolt main is fine up to 500hp with the proper prep. stay away from the blocks with "heco en mexico" cast into them these are low nickel content blocks and complete garbage.

not an expert just sharing what I know so far :beer:

dove'd85 · Jul 12, 2009

PUO said:
I'm looking to run pane on my big block and what I have learned so far is you can get away with a much higher compression ratio. @ 11:1 or more depending on the cyl heads and the cam grind should have more duration on the exhaust. as far as a cylinder block a 2 bolt main is fine up to 500hp with the proper prep. stay away from the blocks with "heco en mexico" cast into them these are low nickel content blocks and complete garbage.

not an expert just sharing what I know so far :beer:

thanks for the info, so are all sbc blocks the same? other then the rear main seals, nickel content?