Quote:
Originally Posted by Sparks67
You can also buy OEM crankshaft from GM. In this thread, it was an LS engine. Although, you have seemed to switched it to a big block. The OEM manufacturer tests their products more than aftermarket products. So, if you was building a LS3 427 then would you chose a Chinese Scat crank or OEM GM crankshaft.
Scat is cheaper, but only about $60. = Summit price is $797 for 4.0 Stroke crankshaft.
LS7 Crankshaft is $859.
http://www.newgmparts.com/partlocato...086&startrow=6
Blueprint doesn't list their stroke, but to get to a 427 with LS3. Most engine builders are using a 4.125 stroke crank, which cost is more. $1,037.
Jeff |
Quote:
Originally Posted by Sparks67
Oh, you mean...Qinghai Jienshen Crankshaft Mfg, Co. (Scat's China Supplier). No webpage on the company, but it doesn't look like it is attached to any Chinese automotive company.
The other option is a GM crankshaft, which a friend of mine used on his 383 roller small block, it was fast street car/ but he took drag racing as well. He was machinist at local speed shop, but he said that he got the GM cranks cheaper than a Scat Crank. This was awhile ago, but I have compared prices in a previous post and it was only $60 difference for 4" stroke LS crank.
Why does SCAT go to China instead of making in the USA? It is Greed! The question is how much that crank cost from China? Then they price it a little cheaper than GM part. I am from a former GM town (Kettering, Oh. You might have heard of DELCO), but I seen the affects of companies that have left the USA to get lower labor costs. My friends that worked at GM lost their jobs. So, maybe you guys might think about that next time you save a few bucks.
Callie is hard to follow on where is made at. Anyway, I posted that in another post, but I heard that Japan Kobe is the foundry for compstar. Japan Kobe has foundries in China, but other parts of the world.
I heard the Dragonslayer cranks are made in the US, but again I am not 100% sure. I have Crower crankshaft and it is made in USA.
A good article on crankshafts http://www.enginebuildermag.com/Arti...rformance.aspx
Jeff  |
Jeff your loyalty to American made products and furthering domestic employment is commendable. It is however a bit hard to follow your argument/logic on parts. This thread was about an LS3 427. You then bounced to a BBC, an LS7 and then a 383, all in the name of smashing foreign crankshaft products and purchasers.
The link and price comparison you posted is for a GM LS7 forged crank. This crank would require either machining down the snot to accomodate a wet sump pump or adding a GM dry sump ($$$). The LS7 is also balanced to Ti rods (retail, what $600 a piece?), which would also force you to add mallory to balance the crank adding more $$$.
So let's get back to an LS3427. Which GM crank, non-dry sump is forged?
I seriously don't know, never built one like that.