hi ! all i am new to this site .. i bean looking for info for hours and apparently the only ppl that use a similor set up that i want are the 4x4 guys.

so here goes nothing

I am planing on building a 350 4 bolt main whit propane only.( full rebuilt)
so i ear that the head need some kind special seat or something at the valve cause its dry fuel... any one can tell me more about that?

i am looking to put out 300+ hp and i like to get 350 and up..
i also like to know what kinda of compresion i need since its on propane
its going to be street legal... but it dont mater much since u only inspect your vehicul once in a life time here hehe and that alredy done.


i would also need to know what kind a part i am looking to get to be able to handle such power
i also whant it to be runing on carb...

also what kind or tranny and rear end should i get or just stick whit the stock stuff
its a 1988 chev 1500 2x4

any tips or info would be much appreciated

http://www.gotpropane.com/

i have look at that site alredy...
i alredy have a set up propane on the truck but that engine got 400 000k on it and is weak
i want to replace it

i am more looking for half detail info like
what kind of piston
should i bored it out?
should i port and polish my head to get that amount of horse power?
i got a set of head alredy to be determine the numbers of it
but looking for a full rebuilt
so i need name of head and carb
and cam
and is it wort doing a 3 angle valve job?
are all the propane set up on carb?? that set up look wird and i cant tell if my truck on carb or fuel injection

i need tips like that if any one built a 350 propane and making 300+ hp on it i like the info on it

thankx again

i have look at that site alredy...
i alredy have a set up propane on the truck but that engine got 400 000k on it and is weak
i want to replace it

i am more looking for half detail info like
what kind of piston
should i bored it out?
should i port and polish my head to get that amount of horse power?
i got a set of head alredy to be determine the numbers of it
but looking for a full rebuilt
so i need name of head and carb
and cam
and is it wort doing a 3 angle valve job?
are all the propane set up on carb?? that set up look wird and i cant tell if my truck on carb or fuel injection

i need tips like that if any one built a 350 propane and making 300+ hp on it i like the info on it

thankx again

Alright, first off, punctuation and complete sentences would help you out a lot on this board.

Your trucke is an 88', it has TBI fuel injection with a dual plane intake manifold. The heads are a swirl port design which is intended for low RPM torque.

Good flowing heads are a plus on any engine, but know that you have to have an intake and exhaust to compliment the capabilities of the heads. That said, I wouldn't put too much in to the stock heads if that is what you plan to use.

You will want to build the engine with high compression for the propane. If you call the guys at gotpropane.com, they will tell you more.

The best propane information can be found here:

http://fuelsforum.rasoenterprises.com/

Gotpropane was far more interested in selling me a kit than actually offering any useful advice. Of course, I think I made it a little too clear I had no intention of buying one of their kits.

Read up. It's far better if you learn it yourself than I tell you.

Something tells me he is either from Europe or South America.

My suggestion is for u to find a good engine building shop that does propane and ask them about what u need to build a motor.

yes you need to install hardened valve seats and u should do a 3 angle grind for you to get longevity out of your motor.
I run a 350 built for propane bored 40 over, flat top pistons, and a mild marine cam. To be honest i dont know what power i currently make but i move a 7000lb (on 40s) truck through a t400 around daily just fine . . i do notice its a little underpowered in mountain passes but i plan to compensate with gearing.

If i were trying to make the power your talking about or if i were to do it again i think i would build a propane 383. my 2c

Something tells me he is either from Europe or South America.

If that is the case, then I retract my statement about punctuation and complete sentences.:grinpimp: