Bilster

iTrader: (21)

Hey guys and gals,

I'm a LSx newbie and need a little information. Check out the link on a HTC 351 ci build under the heading "ON THE GROUND".
http://www.chevyhiperformance.com/te...ons/index.html

I have a LS1 long block and am interested in this build for a propane powered truck application. The HTC website appears to be down and I can't get more information. I'm looking to get 11:00 compression. Can I get that with milled 5.3 heads? The stock heads would be adequate powerwise but I don't think they will mill to the 58cc I need to achieve the 11:00 compression. Any thoughts?

LS1Formulation

iTrader: (13)

I'm going to say the $1000 you'd spend adding a whole 5 cubic inches to an LS1 would be better spent on a set of heads. A stock LS1 will be at 11:1 with a set of 5.3 heads and .040 gaskets, no milling needed.

deadhorse66

iTrader: (2)

Or do some 243s, depending on what you want to do with it, that will get you another half point to take you to 10.5:1. You won't have to spend a lot of money, either way.