Originally Posted by mpett1
also what would a LT1 vette motor be worth. I think I may be able to pick one up.
You're very welcome!
Believe it or not, the major parts required to build a "numbers correct" 1970 LT-1 long block aren't that hard to find or expensive.
The 3970010 casting block is common as dirt... Four bolt main blocks are more difficult to find, but any good machine shop can install the correct caps on a two bolt main block.
The 3927186 casting heads are the same as the block. The LT-1s came with the big valves (2.02/1.60), but a small valve head can be cut for the big valves (and is often preferred by some shops).
The finding a forged crank that isn't ground undersize .020+ might be tough, but they are out there and are reasonablly priced because the current crop of forged cranks from GM and the aftermarket are just as good (better in some cases).
The 3972110 casting intake is pretty common too... I see them at swap meets all the time.
Connecting rods are common... Pistons are long since dicontinued and I believe that even the L-46 pistons that GM carried for many years are discontinued as well, but a similar piston is available from Sealed Power (which I believe used to be TRW, who made the original)... The exact
oil pan might be tough to find, but I think that someone is reproducing these now... Camshaft is GM discontinued, but Crane has an exact copy (they were supplying GM before it was discontinued)... Valve gear is best purchased through the aftermarket, although some of the original LT-1 parts are still available.
My guess is that with some judicious purchases and machine work, you could put together a correctly dated and numbered LT-1 long block for somewere in the $3,000 - $4,000 range. I guess that figure is what I'd base any purchase decision on. If the engine that you are looking at has a factory stamped build date and/or VIN derivative, then the engine might become much more valuable to the person who actually owns the car, but that is the only instance where I see the price going higher than the range that I quoted.
The huge cost for restoring an LT-1 correctly occurs when you have to purchase the non-long block items... A.I.R. equipment, T.I. distributor system, alternator, carburetor, etc. Not only are some of these items extremely expensive, but they are next to impossible to find (especially if correct dates are an issue) as well.
The A.I.R., T.I. (1111491 distributor, 272 coil, amplifier box, and wiring harness), and 1100884 61A alternator mentioned above (all restored and ready to bolt on) will set you back around $4,000 to $5,000 alone IF you can find them.
When you getting that LS-6 on the road.. ETA..
I've actually been working on getting things organized to get started in the next month or so... I also started taking detail photos of the car before disassembly (you can never have enough photos) for reference during restoration and so that all goes smoothly when I start putting it back together.
If all goes according to plan, I'm hoping to have it back on the road in two years... Figure the summer of 2008.