Thread: need some advice for my hotrod project

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can anyone please offer some advice for my hotrod project, i am building a 1934 open motor hotrod, i would like to run a twin turbo 350 running straight liquid petroleum gas (lpg). i have heard the boost would be around 6 psi, a regular street driven car with a turbo 350 and i am thinking 3.55:1 rear end. nothing to flash, just very relaible. i dont think heat would be a issue as the motor wont have side covers, just a bonnet top.
does anyone have suggestions on heads allow or cast and what size chambers etc
after reading many other threads and learning some more, would higher rpm be a better solution as in shorter rods and longer pistons, as such i think i read.
could anyone offer advice on some motor spec etc...any advice for what i might have to consider etc