2.8l to 3.4l

[chriscolehawk]

1985 GMC S-15 Ext cab 2.8 auto

Wanting to swap out my 2.8 for the 3.4. And also swap to a 5-speed.

I'm under the assumption that everything is a direct fit from 2.8 to the 3.4.

The 2.8 has the fuel pump mounted to the block and is v-belt setup.
I don't have much time to search for every little detail and can't afford to have any mayor setbacks. My window of opportunity is coming up soon and I'll have exactly 2 weeks to get the project done. Is this something that can be done in 2 weeks. I imagine that if it's just a direct swap then I'll be done in a a day or so.(planned on buying a crate engine.)
Will my external fuel pump mount to the 3.4? If not what can I do to make it work with the carburetor? (If that's possible) What about balancing? Internal or External? Flywheel and harmonic balancer?
Am I getting in over my head?

If anymore info is needed just let me know. Any and all help will be greatly appreciated. Thanks!

=-=-Chris=-=-

[Canyonero]

All your questions should be answered here. The author is around this forum somewhere.

http://members.shaw.ca/howto/2.8l%20to%203.4l/engine%20swap.htm

3.4L will be internally balanced, you'll want to pair it with a newer neutral balanced flywheel. No place for your mechanical pump, so plan on going electric. Otherwise it should be a bolt-in.