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  #1 (permalink)  
Old 06-18-2003, 02:37 PM
406chevelle's Avatar
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Scat forged or cast????

Scat forged or cast????

Scat has two Chevy 400 small block rotating assembly kits that I am considering for my 406 buildup.

The first kit has SRP forged pistons, H-beam rods, and a 4340 forged crank (very nice) $1559 ouch!

The second kit has SRS (Probe Industries ?) forged pistons, I-beam rods, and a Series 9000 cast crank $899 (much better on the pocket book).


The compression ratio I will be running is about 9.8 to 1
92 octane pump gas street/bracket 72 Chevelle

My question is would it be safe to go with the cast crank and I-beam rods in the $899 kit for my 406 buildup?????

Any help would be greatly appreciated.

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Old 06-18-2003, 02:56 PM
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It all depends on how much HP you wanna make and how high of revs your are going to take it too. If you want a high horse motor that's gonna spin real high too, don't take the cheap route, it'll cost you more in the long run (when they give on ya). But if it's going to be a mild motor, there's nothing wrong with the lesser expensive assembly.
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Old 06-18-2003, 03:15 PM
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i thought scat had cast cranks for way cheaper than that even but i guess not. i've heard that when they go a cast crank doesnt come apart to the extent that forged ones will but most of your higher performance engines came with forged cranks so... i think even a cast crank from an aftermarket co like scat would have to be better than a factory forged unit but i could be wrong. you can get cheaper cast cranks out of summit for under 200. if you want to save money you could do that. their stage two rods and hyperuetectic pistons with a crank are like in the 800 dollar range. scat's ads for forged cranks at $1200 always make me wonder who's buying them all that they can afford to run that ad month after month. that's alot of advertising money.

if you get stuff at summit plan on forged crank for $590, stage two rods at $370, k-b pistons at $230, total seal gapless rings at $200 and youre screamin for $1400. can probably get the package deal for alot less or including gaskets and bearings at the very least.

Last edited by bullheimer; 06-18-2003 at 03:27 PM.
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Old 06-18-2003, 06:01 PM
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If you are on a budget some of the ebay sellers can really save you some money. I got a 4340 eagle crank for $330, Prowler 4340 Pro Billet I beam rods with ARP 7/16 cap screws for $430, and SRP forged pistons for $350. I guess some concider is a risk, but I got top quality parts and had no problems. I talked to all of the sellers in depth to get an idea of there return policies. All of them agreed to replace the parts if any machining problems or blemishes were found.

Chris
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Old 06-18-2003, 06:02 PM
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I will be running about 446HP at 5500rpm and 480lbs Torque at 4000rpm at the flywheel and take the revís up to 6500rpm.

Scat does have cheaper cranks I believe you can get a cast crank for about $225, the forged crank that comes with the kit am considering costs $665 when purchased separately.
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Old 06-18-2003, 06:33 PM
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I recently purchased Scat forged h-beam rods...$350...and a forged 4340 sbc 350 crank for $550...from internet outlets...all nice pieces...
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Old 06-18-2003, 07:05 PM
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Thanks for the info. Nastynova Those are some great prices, I am not familiar with internet outlets can you give more details please?
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Old 06-18-2003, 08:24 PM
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I will have to find the paper work for the rods...but,I got the crank from www.cnc-motorsports.com
he should have the rods too, probably cheaper than where i got mine...let me know if you need anything else...

my crank was for a one-piece rear seal...earlier ones should be cheaper...

I was wrong...crank was $509 plus $15 shipping...

Last edited by nastynova; 06-18-2003 at 08:30 PM.
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Old 06-18-2003, 09:16 PM
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I would not worry about a steal crank at less than 500 HP. A set of the 5140 steal rods would also work nicely at that level. This site sells the rods and crank at the best prices I have seen on the net. I bought a radiator, fluid balancer and my 4340 rods from him. Very good to deal with. This link will take you there. He also has pistons at very good prices. Ask to speak to tony if you call in to order. I think he is the owner.

Chris
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Old 06-18-2003, 11:34 PM
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I've got a SCAT 9000 series crank in my 331 stroker. The quality is very good and the machine work excellent. Every journal right on the money. Mine is N/A and won't have any power adders.

A local racer has a 9000 series crank that he has made over 1500 passes on in the 10 second range. Still going strong. That was good enough for me.

I also have the SCAT H-beam rods. Same thing: high quality and the balance was within 1/2 gram on 8 of them.

I HIGHLY recommend SCAT products.
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Old 06-18-2003, 11:54 PM
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i see alot of people racing with the scat 9000 cranks all the time so i got me one at 199 cant beat that price scat i beam rods 249 and kb hyper pistons 250 my moter isnt kryptonite but i feel safe running 500hp at 6500rpm i found these @flatlanderracing.com
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Old 06-19-2003, 12:18 PM
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Another example of the Scat 9000 series crank is my friends 63 Galaxie. He put a 4.5" stroke crank in a 557 and his combination makes somewhere around 750 horsepower. Enough to push his 3600 pound car to 9.89 @136. A teardown this year showed some minor wear on the bearings, the crank still looks great. He also added a few slugs of heavy metal to internal balance it. I redid a SBC and had to get a $175.00 crank kit that looks like junk and then a month later met a machinist that could get me a stroker 9000 series crank for #189.00. Oh well, I'll know for next time.
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Old 06-19-2003, 05:55 PM
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Thanks for the info. Not only can I save some money going to some of the web site listed, but I am leaning towards the scat 9000 series cast crank, that will save me about 300 buck.

Thanks again everyone.
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Old 06-20-2003, 05:12 AM
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I got the series 9000 also. Havent used it yet, still sitting in the basement. I mic'ed the day i got it, and every journal was right on the money.
Check out Dirt Track Thunder for some good prices.


C
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