A search didn't get the info I'm after, so I thought I'd ask. What are the valve sizes and combustion chambers volumes for the 4.8/5.3/6.0? Also, does anyone know the weight of a complete 4.8 (couldn't come up with this anywhere on the net)? If anyone has this info, or can direct me to where I can find this info, it would be greatly appreciated.
Thaanks,

Andy

 

i was looking for the same stuff on 5.3 lm7 this was the best i could come up with ,chim in pepole and let me know if im wrong.200cc intake port 70cc exhaust,1.89intake valve,1.55 exhaust valve,61.5cc chamber,9.5:1 com,96.01x92mm bore and stroke, stock cam 192/190 465/455 115lsa,block 9.24 deck.like i said im not saying these are fact just what ive compiled.hope this helps a little

 

see if this helps any
https://ls1tech.com/forums/showthrea...ight=lq4+heads

 

Great info, thanks!!!
How about the engine weights? Only reference I found was for a complete 4.8 @ 530lbs. This seems really high, as the iron head 350 SBC weights that. Anyone?

Andy