Best forged crank for a SC?
Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
Likes: 2
From: Silicon Valley Kalifornia
Best forged crank for a SC?
Anyone recommend an aftermarket forged crank for a Supercharged 350 running approx 8-10lbs boost? ANY input appreciated! (approx prices too).
Drifting
Joined: Aug 2000
Posts: 1,316
Likes: 0
From: Houston, TX
Re: Best forged crank for a SC? (Oh My)
Crowler, Hank the Crank, ck the guys at Competition Products, http://www.competitionproducts.com
They carry all of them I think, also have some Trick Flow Forged Cranks left.
They carry all of them I think, also have some Trick Flow Forged Cranks left.
Melting Slicks
Joined: Apr 2002
Posts: 3,019
Likes: 0
From: down that one road next to that big tree
Re: Best forged crank for a SC? (HWoods)
crower makes one of the best but unless your making 2000hp it's not needed. scat makes a cast steel 9000 crank that could take 500hp all day long for a few hundred dollars. they have 4130 forged cranks for around 5-600 that could stand over 1000hp and for a little more you could have it nitrated. no one really beats scat for the bang per dollar in cranks. they also make GREAT rods.
Melting Slicks
Joined: May 2000
Posts: 2,148
Likes: 1
From: Chandler AZ
Re: Best forged crank for a SC? (GRX)
I'm using the Scat 9000 series steel crank in my supercharged 383. Very nice piece, internal balanced easily. You can't beat them for price/performace. My shop didn't think a forged crank was warranted unless I was turning 6000+ rpm all day long.
Burning Brakes
Joined: Oct 2000
Posts: 936
Likes: 0
From: Chicago Illinois
Re: Best forged crank for a SC? (gcrouse)
An interesting note on the Scat 9000 cast steel cranks; they have a tensile strength of 105,000 lbs/in^2, which is the same as the old GM forged 1053 steel cranks; in comparison, cast GM cranks have a tensile strength of about 95,000 lbs/in^2. Vizard is a big believer in the 9000 series cranks for above and beyond 500 hp.
Rob
Rob
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: Best forged crank for a SC? (GRX)
Just look on the web for stroker crank kits. For @ $1500 you can get a 4340 383 - 396 cubic inch master racing kits.
If you have a 350 4 bolt block. I would use a fully studded bottom end with better main caps. Or better yet have the block machined for splayed bolt main caps. Then buy a 3.875 forged stroker crank in your budget to build a 396 ci. Buy some $500 - $600 600 plus gram H beam rods. figure out what size dished blower pistons you need to get @ 8 to 1 compression. Blower pistons are different because the top ring is farther away from the piston top.
Then spend the extra @ $225 dollars and have your pistons thermal barrier coated
If you have a 350 4 bolt block. I would use a fully studded bottom end with better main caps. Or better yet have the block machined for splayed bolt main caps. Then buy a 3.875 forged stroker crank in your budget to build a 396 ci. Buy some $500 - $600 600 plus gram H beam rods. figure out what size dished blower pistons you need to get @ 8 to 1 compression. Blower pistons are different because the top ring is farther away from the piston top.
Then spend the extra @ $225 dollars and have your pistons thermal barrier coated
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Thread Starter
Le Mans Master
Joined: Jul 2001
Posts: 6,252
Likes: 2
From: Silicon Valley Kalifornia
Re: Best forged crank for a SC? (gkull)
...
Then spend the extra @ $225 dollars and have your pistons thermal barrier coated
Then spend the extra @ $225 dollars and have your pistons thermal barrier coated
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: Best forged crank for a SC? (Matt Black)
Matt - for blower motors you need to really look at the graph to figure out dynamic compression ratio as boost pounds change. it's very easy to cross the line and start requiring something higher than pump gas octane even with det controls and timing retards.
GRX - I don't leave home without my thermal coatings! Monty's wild TT is also having it done. I did it to run high compression on the street and plans for a 250 shot of NO2. With thermal coatings you can run 1 point higher C/R. Your right a 9 or 10 C/R static motor can be built if your going to run 100+ octane race gas whenever the boost is on. I have the books on blower motors, but unless I look it up I couldn't for sure say that 8.00 is perfect.
On this forum a guy from Texas has 600 some rear wheel HP out of a 408 ci small block. He stuffed in a 4 inch strocker crank in a 350 ci block. I have just seen to many broken pieces when you go too that extreme stroke length and high power. 3.875 strokers for 350 blocks make a wonderful 396 ci.
[Modified by gkull, 10:21 PM 6/10/2002]
[Modified by gkull, 11:44 AM 6/11/2002]
GRX - I don't leave home without my thermal coatings! Monty's wild TT is also having it done. I did it to run high compression on the street and plans for a 250 shot of NO2. With thermal coatings you can run 1 point higher C/R. Your right a 9 or 10 C/R static motor can be built if your going to run 100+ octane race gas whenever the boost is on. I have the books on blower motors, but unless I look it up I couldn't for sure say that 8.00 is perfect.
On this forum a guy from Texas has 600 some rear wheel HP out of a 408 ci small block. He stuffed in a 4 inch strocker crank in a 350 ci block. I have just seen to many broken pieces when you go too that extreme stroke length and high power. 3.875 strokers for 350 blocks make a wonderful 396 ci.
[Modified by gkull, 10:21 PM 6/10/2002]
[Modified by gkull, 11:44 AM 6/11/2002]
