Just get this block as a basis and call it a day ... can anyone say 763ci?
Just get this block as a basis and call it a day ... can anyone say 763ci?
- Paul J.
2006 Silverado LT3 L33 Z71 - Mods: K&N Air Filter; Taylor Wires
2008 Azera Limited - Mods: (Yah, wife's car ... not happening)
(SOLD) 1994 Camaro Z28 - Mods: (Too many to mention)
(SOLD) 2004 Suburban 5.3L Z71 - Mods: Flex-a-Lite 292 Monster Fan
(SOLD) 2000 Silverado 5.3L Z71 - Mods: (NTIKO)
(SOLD) 1991 Suburban 350 2WD - Mods: (NTIKO)
Well actually the 8.1 and the 7.4 are essentually the same block. The difference is in the stroke. The 7.4 has a 4" stroke. The 8.1 has a 4.25 stroke. Both have the same 4.25 bore. Dart makes heads for both. If one was to take the 8.1 and bore it .100 he would have a 505ci motor. The biggest question is in the avalibility of cam, intakes, and TB's to support that. In the carbed old school world those are monsters!!! They will acheive 850hp and around 7500 to 7800 rpms with little effort. In the new injected age, I'm not sure if the parts are readly avalible to acheve the same results. With a carb you would need a 1150cfm to 1350cfm (Dominator) to really feed them properly. It stands to reason someone out there could cut a decent cam for one of the newer versions. Now all thats left is intake and TB. Find that and you have a sb eating beast.
Last edited by daddy's_playing_again; 04-14-2012 at 08:24 AM.
My dad has a Marine 8100 in his 78 GMC motorhome and it rips good and gets 11mpg driving VERY nicely
2002 ECSB 2WD 5.3
1995 Formula Firebird 383 LT1
1984 Camaro 408 SBC
Most sports require one ball, motocross requires two.
Racing isn't a matter of life and death, it's much more important than that.
Posting Permissions
Reply With Quote