93' Lumina Z34 3.4 DOHC to 4.3 vortex swap

[Sixx]

I'm new to the forums, so I should start off by saying hello to all. To make a long story short, I purchased this Z with alot of miles on it(238,000), so an engine swap is a must. I would replace original motor with original, but rumor has it that a 4.3 vortex would fit nicely with a few modifications. Before I head over to GM to get the new motor, I need some tips and opinions from the pros as to what modifications are necessary besides a new chip. Thx guys

[SappySE107]

RE: 93

im not aware of anyone putting a 4.3 in place of a 3.4 DOHC. The transmission is going to be one problem, then custom fab exhaust, swap the ECM, and im sure there is plenty more to get in the way. The 4.3 is a 90V6 so im not sure we are gonna be that helpful to you in this swap.

[geoffinbc]

Wow 2 Extremly different engine families. Along with what ben said keep in mind there was never a 4.3L Gas engine ina GM FWD Car. And only a VERY small amount of 4.3L Diesel engines. So your big problem is going to be finding a tranny. Every GM V6 Fwd car uses the small corperate patter on the trannies. The 4.3L Uses the standard Chevy small block pattern.

I dont know who said the engine would fit nicely because it will without a doubt be one of the most difficult swaps you would think of.

I would stick with the 3.4L engine. The DOHC engine makes killer power. Either buy new or rebuild it.

[sharkey]

you would need custom mounts, and to make an asaptor for the tranny. now being the back of a 4.3l is basicly small block chevy, a fiero trans adaptor, flywheel, and clutch would work. i have no clue what you would do for a support system. you would likely need full stand alone.

[Sixx]

Thanks for the replies.. It would probably be wise to put a new original in w/ a few hop-ups.. Thx

[Dann Wade]

This is my first post on this forum and I am not aquainted with the rules yet. I have a product that makes it possible to change a front wheel drive 60V6 engine into a rear wheel drive engine. I have been making this product for some time.Currently the conversion uses an electrical water pump but I am also programming the CNC to machine the conversion for a mechanical CW rotattion water pump. I may not be able to answer any question in a timely manner but if you would email Killerbv6@aol.com I would be sure to get your questions. Thanks, Dann

[Dann Wade]

In the preceeding post I should have said that this conversion only works with a pushrod engine.
Dann

[pepsi_coke]

This is my first post on this forum and I am not aquainted with the rules yet. I have a product that makes it possible to change a front wheel drive 60V6 engine into a rear wheel drive engine. I have been making this product for some time.Currently the conversion uses an electrical water pump but I am also programming the CNC to machine the conversion for a mechanical CW rotattion water pump. I may not be able to answer any question in a timely manner but if you would email Killerbv6@aol.com I would be sure to get your questions. Thanks, Dann

:wtf1:

::

[Dann Wade]

Confused? About what? Have a question?
Dann