Rotating Assemblies
Thread Starter
Race Director
Joined: Mar 2016
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From: Napa Valley California
Rotating Assemblies
I'm looking at rotating assemblies for my 73 454 big block.
I'm thinking of stroking it to 496 cu in and I've been looking at SCAT and Eagle brands, but I've heard some people say that neither are as good as they used to be and that both are using components produced in China and just doing the machining here in the US.
Can anyone confirm the rumors?
The brands these machine shops are suggesting are costly, up to $4k-$5k, just for crank, rods, pistons, rings and bearings. This is discouraging.
Another suggestion I received was to buy a new 502 cu in block from Chevy Performance their, crank, rods, pistons, bearings, rings to get high quality parts.
I'm thinking of stroking it to 496 cu in and I've been looking at SCAT and Eagle brands, but I've heard some people say that neither are as good as they used to be and that both are using components produced in China and just doing the machining here in the US.
Can anyone confirm the rumors?
The brands these machine shops are suggesting are costly, up to $4k-$5k, just for crank, rods, pistons, rings and bearings. This is discouraging.
Another suggestion I received was to buy a new 502 cu in block from Chevy Performance their, crank, rods, pistons, bearings, rings to get high quality parts.
Last edited by OldCarBum; Sep 26, 2017 at 02:07 AM.
Pro
Joined: Sep 2017
Posts: 516
Likes: 72
From: Modesto California
I'm looking at rotating assemblies for my 73 454 big block.
I'm thinking of stroking it to 496 cu in and I've been looking at SCAT and Eagle brands, but I've heard some people say that neither are as good as they used to be and that both are using components produced in China and just doing the machining here in the US.
Can anyone confirm the rumors?
The brands these machine shops are suggesting are costly, up to $4k-$5k, just for crank, rods, pistons, rings and bearings. This is discouraging.
Another suggestion I received was to buy a new 502 cu in block from Chevy Performance their, crank, rods, pistons, bearings, rings to get high quality parts.
I'm thinking of stroking it to 496 cu in and I've been looking at SCAT and Eagle brands, but I've heard some people say that neither are as good as they used to be and that both are using components produced in China and just doing the machining here in the US.
Can anyone confirm the rumors?
The brands these machine shops are suggesting are costly, up to $4k-$5k, just for crank, rods, pistons, rings and bearings. This is discouraging.
Another suggestion I received was to buy a new 502 cu in block from Chevy Performance their, crank, rods, pistons, bearings, rings to get high quality parts.
As G.M. buys most of their parts from Mexican and Chinese factories I would think they'd be the same quality as Scat and Eagle. I suggest talking to your local crank grinder as he would know what differences there are between the different brands. I watched a video a few days ago about BMW engines being made in China and BMW is VERY picky about quality as we all know. The factory was ultra high tech in every way from forging and machining the crankshafts and connecting rods to casting and machining the aluminum engine blocks and cylinder heads.
Melting Slicks
Joined: Mar 2008
Posts: 2,666
Likes: 289
From: Spring Park MN
I'm looking at rotating assemblies for my 73 454 big block.
I'm thinking of stroking it to 496 cu in and I've been looking at SCAT and Eagle brands, but I've heard some people say that neither are as good as they used to be and that both are using components produced in China and just doing the machining here in the US.
Can anyone confirm the rumors?
The brands these machine shops are suggesting are costly, up to $4k-$5k, just for crank, rods, pistons, rings and bearings. This is discouraging.
Another suggestion I received was to buy a new 502 cu in block from Chevy Performance their, crank, rods, pistons, bearings, rings to get high quality parts.
I'm thinking of stroking it to 496 cu in and I've been looking at SCAT and Eagle brands, but I've heard some people say that neither are as good as they used to be and that both are using components produced in China and just doing the machining here in the US.
Can anyone confirm the rumors?
The brands these machine shops are suggesting are costly, up to $4k-$5k, just for crank, rods, pistons, rings and bearings. This is discouraging.
Another suggestion I received was to buy a new 502 cu in block from Chevy Performance their, crank, rods, pistons, bearings, rings to get high quality parts.
Mike
Is my vette stock?? HAHA
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Talking with a machinist that owns his own company. Most things are made in China and similar items are all made in the same factory. Depending on how much QA you want and how much you spend depends on which line your piece is made. One line is the 13 year old kid with no knowledge, the other line is the 30 year experienced machinist. It just depends on the person paying for the work
Team Owner
Joined: Oct 2004
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From: altered state
St. Jude Donor '05
Have used Scat, CAT etc never had a problem with any of them
Having your machinist check them over making sure they are straight balanced right is key. They have their preferred brands, there is no reason a rotating assy lke that should run 4-5k. A GM crate is a good idea or google vortecpro he posts here & makes real good power with GM stuff, its reasonable and stays together.
Dont get sucked into the cheap ebay stuff, fancy ads and bogus hp claims you never know what youre really getting & good luck wiht that "warranty"
Last edited by cv67; Sep 26, 2017 at 09:45 AM.
Is my vette stock?? HAHA
Joined: Oct 2015
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
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Have you looked at remanufactured forged cranks. Crankshaft rebuilders, inc. uses original
GM forgings and rebuilds them. I can get a forged 327 large journal 1130/4672 with bearings for $307 minus the core from these guys through a local chain. That can save you some cash
GM forgings and rebuilds them. I can get a forged 327 large journal 1130/4672 with bearings for $307 minus the core from these guys through a local chain. That can save you some cash
Melting Slicks
Joined: Mar 2008
Posts: 2,666
Likes: 289
From: Spring Park MN
Talking with a machinist that owns his own company. Most things are made in China and similar items are all made in the same factory. Depending on how much QA you want and how much you spend depends on which line your piece is made. One line is the 13 year old kid with no knowledge, the other line is the 30 year experienced machinist. It just depends on the person paying for the work
Mike
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Thread Starter
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From: Napa Valley California
Having worked in design and sourcing for manufacture of performance parts, I agree with this completely. If you nickle and dime the asian manufacturers on price, you get crap. If you detail the design and material specifications and pay them what they quote, you will most times get a quality product. You have to pay to get quality.
Mike
Mike
I am looking at $2200.00 for a SCAT 496 stroker assembly with forged crank, H beam rods, forged pistons. rings, bearings and all the goodies.
I want it to be reliable, and I only want to do it once.
The car will be for street use and not raced at the drag strip or road course.
I'm already getting out of my budget and may just have to rebuild my 454 using the OEM crank which is cast with 2 bolt mains.
Last edited by OldCarBum; Sep 26, 2017 at 01:55 PM.
Melting Slicks
Joined: Mar 2008
Posts: 2,666
Likes: 289
From: Spring Park MN
Ok, that being said, would you purchase a rolling assembly from SCAT or Chevy Performance?
I am looking at $2200.00 for a SCAT 496 stroker assembly with forged crank, H beam rods, forged pistons. rings, bearings and all the goodies.
I want it to be reliable, and I only want to do it once.
The car will be for street use and not raced at the drag strip or road course.
I'm already getting out of my budget and may just have to rebuild my 454 using the OEM crank which is cast with 2 bolt mains.
I am looking at $2200.00 for a SCAT 496 stroker assembly with forged crank, H beam rods, forged pistons. rings, bearings and all the goodies.
I want it to be reliable, and I only want to do it once.
The car will be for street use and not raced at the drag strip or road course.
I'm already getting out of my budget and may just have to rebuild my 454 using the OEM crank which is cast with 2 bolt mains.
Mike
Thread Starter
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From: Napa Valley California
Race Director
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SCAT stuff is fine. I've used it for years. Get all forged stuff so you can add power later without worry. A lot of GM/Mopar stuff comes from SCAT. I've been in the factory with the owner giving a personal tour.
Stay away from CAT.
Callies makes some nice stuff in their lower priced line. Ohio crank sells some decent kits.
Howards sells some good kits too.
JIM
Stay away from CAT.
Callies makes some nice stuff in their lower priced line. Ohio crank sells some decent kits.
Howards sells some good kits too.
JIM