nimak5
1/2 ton status
Which generation 454 block would be best to build a 496? A Mark IV or a Gen 6? Couldn't find a clear answer on the web or on the forums...
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
Best Generation 454 block for a 496 build?
- Thread starter nimak5
- Start date
Gen 6 has a better oiling system.
They're roller blocks as well, not?
Martin
Martin
Yes they came factory with roller cams but that doesn't stop a person from running a flat tappet cam.
Something to look out for is not all blocks are drilled to accept a fuel pump pushrod assuming you wanted to run a carb and keep a mechanical fuel pump.
Why would anyone ever choose to run a flat tappet cam instead of a roller?
Martin
Martin
Cost is alot more and if they already have a good flat tappet they are unlikely to go roller.
nimak5
1/2 ton status
Well I have a good opportunity to get mark iv for cheap... Either block will work fine right?
Nothing wrong with a gen IV, that's what most people have (I just built one for mine). The advantage to the gen VI is it's (re)design fixes/improves a few inherent problems with the previous versions (2pc rear seal, etc).
IMO, the gen V is the one to avoid - not because it's truly bad just has a few odd things a builder needs to be aware of (gen specific heads or special gaskets, no mech fuel pump boss, etc).
IMO, the gen V is the one to avoid - not because it's truly bad just has a few odd things a builder needs to be aware of (gen specific heads or special gaskets, no mech fuel pump boss, etc).
nimak5
1/2 ton status
Perfect, thanks
