I know the heads are cast Iron heads on the Caprice.

THe bottom end and Intake manifold are the same correct?

 

cam is different, but I think most other parts are the same, the accessory brackets are a little different too

 

But couldnt i use the Caprice block to build a motor for my car? i dont care bout the cam and what not i kno that stuff is different, im just curious if using that block is worth my time for my Z

 

You could use the block yes, they're identical in that regard.

 

Not always:

http://www.automotiverebuilder.com/ar/ar99928.htm

 

What am I missing.. the blocks are identical are they not? I skimmed that article as I've read it before and missed a difference in the blocks (aside from the 4 bolt blocks of course)

 

Here ya go...

 

Oh, I thought that one was obvious enough to avoid

 

yea i am well aware of the "4.3" LT1.

 

Yeah as long as you know its a 350 then its all the same from there on. A buddy of mine bought a LT1 350 out of a Roadmaster, had it rebuilt and is running it in his car right now with the aluminum heads. The only other thing that is different is the waterpump and the crank hub and oil pressure sensor behind the intake so youll need to take them off your old motor.

 

If you get the motor from a Roadmaster, a wagon or a Fleetwood those all had the LT1 as standard, with rumors of just one wagon with the L99 there is much less to worry about in getting a motor from one of these if you are worried about getting a 4.3L instead of the LT1 you want.
These are all the same LT1 as the Impala got, boneyards tend to put a price premium on Impala motors to take advantage of the ignorant so you probably don't want to search one of those out.

 

I would get a block out of a Vette. That way, you have four bolt mains instead of the f-body two bolt mains.

 

Have you done even the slightest amount of power the 2 bolt can take? The fact that you even brought it up is proof you have not. Besides with the way you would get gouged for a Vette block and by the time 4 bolt genuinely becomes a good idea you would be better off with an aftermarket conversion.

 

In order of progressively more torque potential, I'd go with the OEM 2 bolt, OEM 4 bolt, OEM 2 bolt with straight 4 bolt conversion, and the strongest, the splayed 4 bolt conversion for 2 bolt block.

 

Where would you rank a studded 2 bolt?