What do you think of this crank? Used pistons? Cost of shipping 1800+ miles?
12-17-2006, 06:59 PM
#1
Le Mans Master
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St. Jude Donor '07
What do you think of this crank? Used pistons? Cost of shipping 1800+ miles?
This is the American-made crankshaft you need if you are restoring an original "numbers matching" 1968-1973 high performance 350 chevy engine such as the 370 hp LT-1 used in some Corvettes and Camaros from 1970-1973. It is casting number 1182. This crank has been ground 0.020 under on the 2.45 inch main journals and 0.030 under on the 2.10 inch rod journals. Larry Holt Sr., owner of Speed Specialties in San Diego, has inspected this crank and can verify that this crank's journals are as stated and only need polishing (619) 287-4500. It has been stored in an upright position since being removed from my 350 LT-1, so it should be straight. I was going to rebuild my 350 engine but got a deal on a 400 so all these 350/LT-1 parts gotta go. See my other auctions for the correct forged pistons (new), connecting rods (used), and 2.02 cylinder heads (used). These cranks are getting hard to find and typically fetch well over $200 on e-bay when you do see them. This one also already has two slugs of heavy metal (Mallory) to balance it, which any machine shop will tell you is expensive but essential for a long-lasting high-reving small block.
Also what about used pistons? Any thing wrong with using them?
And how much is shipping a crank over a logn distance?
12-17-2006, 08:12 PM
#3
Le Mans Master
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St. Jude Donor '07
That's not good right? I'll look for another one or ask my dad's freind(s) if they have any extra forged sbc cranks.
I mainly just want to build a motor for something to do.
I'm probally better of jsut buying hypertechnic pistons right? I'm going to read the chevy power manual about small blocks tonight.
I mainly just want to build a motor for something to do.
I'm probally better of jsut buying hypertechnic pistons right? I'm going to read the chevy power manual about small blocks tonight.
12-17-2006, 08:55 PM
#4
Le Mans Master
Decent 350 steel cranks run around $250-375 depending on the seller. If it has blue/purple paint, it is probably a Tuftridded treatment crank from a LT-1 or HD truck engine. 0.010" under isn't much of a problem, even 0.020" under is OK but, 0.030" under make performance bearings hard to find.
12-17-2006, 09:36 PM
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Le Mans Master
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St. Jude Donor '07
How about a c4 lt1 crank? I assume that is forged. It's a 1 peice rear main so thats a plus as my block is also. I can't tell by the pictures if its forged or not.
12-18-2006, 10:57 AM
#8
Le Mans Master
Nobody has mentioned anything about the (2) slugs of mallory metal already installed. That worries me. WHY WAS THAT DONE?!?! This was not needed on a typical application so what did they do with it that it needed mallory metal? That was a big investment for some strange application. Too many good cranks out there to spend money on this one.
I would pass.
-Mark.
I would pass.
-Mark.
12-18-2006, 12:14 PM
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St. Jude Donor '05
Why not get a Scat 9000 crank? About 200,super strong and brand new.
12-18-2006, 12:18 PM
#10
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St. Jude Donor '07
Nobody has mentioned anything about the (2) slugs of mallory metal already installed. That worries me. WHY WAS THAT DONE?!?! This was not needed on a typical application so what did they do with it that it needed mallory metal? That was a big investment for some strange application. Too many good cranks out there to spend money on this one.
I would pass.
-Mark.
I would pass.
-Mark.
12-18-2006, 12:20 PM
#11
Le Mans Master
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St. Jude Donor '07
Maybe I'll go with that in a 383 or 396 stroker. 396 requires different pistons though. I could just use hypertechnic. Those should be fine. Im not using nitrous or anyhting on it ever. I'm looking for 500 hp or more and lots of torque.
12-18-2006, 07:16 PM
#12
Drifting
Hypereutectic from wikipiedia....
"Hypereutectic pistons are cast internal combustion engine pistons made from aluminum with over 16% silicon content for strength and durability. The term 'hypereutectic' comes from eutectic. Special melting processes are necessary to ‘supersaturate’ the aluminum with additional silicon content. Special molds, casting and cooling techniques are required to obtain finely and uniformly dispersed silicon particles throughout the material. This produces pistons that are very hard, thus brittle. They have proven to be un-forgiving with engine knocking. For this reason they are great in naturally-aspirated engines, but should be used with caution for 'nitrous', super- or turbochargers. Generally speaking, forged pistons are a better choice for high boost.
Hypereutectic pistons are used in many original equipment engines. They are favored because of reduced scuffing, improved power, fuel economy and emissions. The reduced thermal expansion rate allows the piston to be run with reduced clearance, which reduces losses due to gases escaping past the sealing rings."
Cast pistons would not be my choice for a 7000RPM motor IMHO
Fleabay = Just another way to seperate you from your money!!
Not that there are not deals on ebay, I've picked up a few. I've also got burned once or twice.
Caveat emptor
Caveat venditor...
"Hypereutectic pistons are cast internal combustion engine pistons made from aluminum with over 16% silicon content for strength and durability. The term 'hypereutectic' comes from eutectic. Special melting processes are necessary to ‘supersaturate’ the aluminum with additional silicon content. Special molds, casting and cooling techniques are required to obtain finely and uniformly dispersed silicon particles throughout the material. This produces pistons that are very hard, thus brittle. They have proven to be un-forgiving with engine knocking. For this reason they are great in naturally-aspirated engines, but should be used with caution for 'nitrous', super- or turbochargers. Generally speaking, forged pistons are a better choice for high boost.
Hypereutectic pistons are used in many original equipment engines. They are favored because of reduced scuffing, improved power, fuel economy and emissions. The reduced thermal expansion rate allows the piston to be run with reduced clearance, which reduces losses due to gases escaping past the sealing rings."
Cast pistons would not be my choice for a 7000RPM motor IMHO
Fleabay = Just another way to seperate you from your money!!
Not that there are not deals on ebay, I've picked up a few. I've also got burned once or twice.
Caveat emptor
Caveat venditor...