That Caddy does look like it could be a neat project........ a diesel in there could be a lot of fun!!!! Or use it for your 4x4 project!!
I ran across a guy sellign a 2002 powerstroke out of a parts truck for $1,000 I thought about it a while. he's keeping the 4x4 tranny I'd have to buy alot and I think it would be too heavy for my half ton 4x4 and I don't want to upgrade the drive train and suspension.
I decided to use what I already have for the ford...
Dana 44 front 9" rear, I have sets in both 3:42 and 3:73 gears, a 4 speed, and the 460
460 .030 over KB flat tops (10.75:1 compression)
.010 under rods and mains on the crank
crank journal needed line honed on the block
.520 lift on the cam and 290 degrees duration on a 114 degree lobe center peak power 4500 rpm
375 hp @ 4500 rpm
450 ft-lb torque @ 4,000
when it was full time 4x4 with the 3:73 gears and 33" tires I was getting 9-11 empty and 8 towing
I was hoping the switch from a c6 to a 4 speed and a change from the full time np203 t-case to an np 205 and lockouts would net me some more mpg.
I went with flat tops for the compression to run LPG and also so I could take advantage of the squish in a flat top design improving turbulence and burn efficiency>
The factory dished pistons have zero squish.
I think I'm going to tear the 460 down and check everything and polish the chambers. I had a problem with detonation on anything less than 91 octane premium from a trusted station.
I might CC the chambers and would necessarily bring the compression down a tad as a result of the polishing operation.
I'm also going to set aside the factory spread bore for a holly 750 and a good intake.
if the carb is undersized the vacuum signal will be too strong and will pull rich on the top end no matter how you jet it
I installed an edelbrock oxygen sensor kit into the Y pipe which comes in handy tuning
the sensor went bad when I burned out a head gasket with the pinging
I also lost a small fragment of one piston top near the valve release so I also will be replacing that piston and smoothing off the sharp edges
I wasn't sure if it would be necessary when I put it together but it is, I thought I was building it more like 9.5:1 but the 77 heads I have make it 10.75:1
I didn't cc anything the first time around I just went with "specs" of record