Hi demonic.Wow thats gonna be one kick ass engine.Is it gonna be a street car or race car?Whoops just read your message again yes on street.I have a 71 400 stroked 467 high ports 56cc heads 111/2 to 1 solid roller in the 250 range 110 lsa thermoquad carb (dont laugh most people dont realise how good and economical they are).Have 3.23 gears at the moment and run mid 11's.Changing to 3.73 hope to get close to 11.0 which is when the rollbar is required here in Australia.Runs on pump gas (98 octane)which is like your 93.Sorry i took so long to reply but like i said earlier i dont have the chance to get on here very often. Good luck mate and kick some chevy butt with pontiac power.Peter

Hey there 1LeMans I am building my LeMans as A grudge car so she will have full interior and is going back to the original colors to pull in unsuspecting Pray lol I am in the process of building my motor now it is a .30 over 73 455 or now 462 with Butler / Ross flat top pistons Eagle H beam rods fully balanced block is filled to the bottom of the soft plugs Program Engineering 4 bolt main caps. as for the top end KRE high port 64cc heads edelbrock victor intake ported to the heads and a 4150 hp950 carb topping it all off with a induction solutions single stage plate system most likely a 250 / 300 shot. but now thinking of upgrading to a 4500 vic and E85 1050 dominator as the car has now been swapped over to E85