Speedmaster ls1 cast stroker crank.
Of course I read the thread. He's chasing a pipe dream. Trying to make a high performance crank out of a cheap Chinese crank is like pulling a rabbit out of a hat. Will see what happens.
TECH Veteran
Joined: Sep 2014
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From: Mississippi
I understand what you saying kinda but then again what grade of metal is a GM LS7 4 inch crank made from? It just might be the same grade of metal. No offense to you but in some cases if this crankshaft can get in balance it might suit well for a application thats not go be spinning over 7k rpm constantly.
Easy man...guy is trying to put together a budget 383. He is very aware that it’s not a $1k piece. Besides...you suggested that he find a $50 dollar junkyard crank, have it turned, and use it. Their both Chinese junk. My Callies Compstar is Chinese junk...lets just see what happens with this unit before throwing stones.
Thread Starter
Staging Lane
Joined: Oct 2016
Posts: 93
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The point was to see if it's a pipe dream or not. The venolia pistons and Bme rods in my 400ci pst motor cost well over 2500 and let's not talk about the crank and heads because it's a damn max effort race motor. This is for fun man so chill out. Not everyone is a brand ***** and not everyone can afford the same parts this is for the guys who want something they can beat up on the weekends without crying over cost.
Rods will be here next Thursday and pistons soon after. I'll keep posting how the build is going.
Rods will be here next Thursday and pistons soon after. I'll keep posting how the build is going.
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Teching In
Joined: May 2012
Posts: 16
Likes: 1
From: Henry Va
The point was to see if it's a pipe dream or not. The venolia pistons and Bme rods in my 400ci pst motor cost well over 2500 and let's not talk about the crank and heads because it's a damn max effort race motor. This is for fun man so chill out. Not everyone is a brand ***** and not everyone can afford the same parts this is for the guys who want something they can beat up on the weekends without crying over cost.
Rods will be here next Thursday and pistons soon after. I'll keep posting how the build is going.
Rods will be here next Thursday and pistons soon after. I'll keep posting how the build is going.
About 15 years ago an LS stroker rotating assembly from Lunati was about $4000. Some Australia companies explored the idea of doing cast LS1 stroker cranks. Some actually came to market and were successful in the Australian market. Other options became available in the US market for stroker cranks.
Some of us think the idea of an inexpensive cast LS stroker crank is viable in the US market. Scat has definitely sold a lot of cast small block Chevy cranks over the years.
While cast cranks aren't for true high performance use, they can make for a decent street motor.
https://ls1tech.com/forums/generatio...australia.html
Harrop in Australia lists an LS1 cast stroker crank for sale.http://https://www.harrop.com.au/sho...-stroker-crank
My RS & TA both have Callies cranks for their LS1 383 & LSA 416 engines but I'm keeping an open mind to the cast stroker crank. It would be perfect for 400 LS for a weekend cruiser that is a fun car but not really a high performance build.
Last edited by 99 Black Bird T/A; Oct 15, 2017 at 09:49 PM.
I run cheap Chinese headers and exhaust up to the Corsa axle back and it was 900 bucks instead of 1800. It fit and works just fine. My DNJ hyper pistons were 300 bucks with rings. Weighed all the same Sized perfectly. Work just fine.
My point is the OP has been verbally doubtful that this crank is even worth a squirt of llama **** almost expecting it to blow gorilla dick and "yet" it seems to check out just fine Will it hold 2000 horsepower of forced induction???HELL NO
But it seems likely to survive under the umbrella of his build parameters
My point is the OP has been verbally doubtful that this crank is even worth a squirt of llama **** almost expecting it to blow gorilla dick and "yet" it seems to check out just fine Will it hold 2000 horsepower of forced induction???HELL NO
But it seems likely to survive under the umbrella of his build parameters
Thread Starter
Staging Lane
Joined: Oct 2016
Posts: 93
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Lol. Yeah pretty much. Its just you see/ read so much crap you can't help but to believe it then when you find out it works its like "but wait mom everyone said!" 
. I ordered the 6.125 pro comp rods yesterday, still need to order the dss pistons I want.But tonight I bit the bullet and bought this junk 
Its the 383 is coming along slowly but surely.
. I ordered the 6.125 pro comp rods yesterday, still need to order the dss pistons I want.But tonight I bit the bullet and bought this junk 
Its the 383 is coming along slowly but surely.
Exactly...this will be an excellent option for when I rebuild the 6.0L that powers my 86 dually tow rig.
Ed, I apologize. I didn't mean to muck up your thread, just really want to see this turn out for us guys that can't "break the bank"...
Thread Starter
Staging Lane
Joined: Oct 2016
Posts: 93
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alper studs $130
alper spring kit $162
cast crank $190
procomp rods $276
dss pistons $430
241's with rockers $100
ls9 cam $116
balancing will be $200
honing bout $240
ls1 short block $200(came will full rotating assembly so you could say just the block was $100)
A 383 priced at $1828 for everything pretty much if you are building from scratch. Just add the price of whatever gasket set and bearings you choose.Oh and speedmaster does call for the thinner and radiused bearings most other stroker crank makers suggest.
I don't see where or how ya did sir. Originally the post was just to show if the measurements were ok to work off of. I wasn't gonna actually start on the motor until after winter and the t/a project but the interest from you guys has me wanting wanting it done already.
alper studs $130
alper spring kit $162
cast crank $190
procomp rods $276
dss pistons $430
241's with rockers $100
ls9 cam $116
balancing will be $200
honing bout $240
ls1 short block $200(came will full rotating assembly so you could say just the block was $100)
A 383 priced at $1828 for everything pretty much if you are building from scratch. Just add the price of whatever gasket set and bearings you choose.Oh and speedmaster does call for the thinner and radiused bearings most other stroker crank makers suggest.
alper studs $130
alper spring kit $162
cast crank $190
procomp rods $276
dss pistons $430
241's with rockers $100
ls9 cam $116
balancing will be $200
honing bout $240
ls1 short block $200(came will full rotating assembly so you could say just the block was $100)
A 383 priced at $1828 for everything pretty much if you are building from scratch. Just add the price of whatever gasket set and bearings you choose.Oh and speedmaster does call for the thinner and radiused bearings most other stroker crank makers suggest.
Have you considered having the crank checked for cracks or other material defects? Having a crank inspected (MPI and/or X-ray) isn't too expensive and might save you from wrecking the rest of that shortblock if they do find something.