Welcome Visitor! Please take a few seconds and Register
for our forum. Even if you don't want to post, you can still 'Like' and react to posts.
Very little will swap between a 2.8 and 4.0. They mixed some things around between the 2.8/2.9 (timing gears to a timing chain so the cam spins different directions so the intake/exhaust port locations changed) that would put a bad wrinkle in carberating a 2.9, then they made the block bigger for the increased bore and stroke of the 4.0 so even less is the same. Then to top it off the 4.0 has a distributerless ignition you would have still have to figure a way around if you had a custom intake made.
I've never pulled the 4.0L, but that Chevy 250 is a HEAVY SOB. I don't see how it can possibly be the same weight as a V6. It's almost twice as long and it's all cast iron, except for the pistons. Even the intake manifold (such as it is) is cast iron. The crankshaft alone is a heavy lift and it takes a big guy (or two not-so-big guys) to move the bare block. It's certainly FAR heavier than a 2.9L, and the bare block is significantly heavier than the bare block on an SBC. It's also a very tall engine, though not all that wide.
Oh that's fawesome.... Nothing but even mixture distribution there...
That 4.5L stroker kit would be kinda cool, but I would hate to think what a $2500 302/351 would do to it. You would need tranny work either way, so I guess I don't see the advantage of it other than the "neat" factor.
For a small yearly donation, you can support this forum and receive a 'Supporting Member' banner, or become a 'Supporting Vendor' and promote your products here. Click the banner to find out how.
