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#1
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4.500 inch Scat Forged crank results
I know there have been some posts on here about how good or not how good the Scat Forged Cranks are and I have some positive results from them.
Last night I pulled the shortblock apart and the rod and main bearings (which are the same ones from last season) still look great. I am sure that running aluminum rods definitely help. I run some pretty high rpm also 8100 on the shift and trap 8500 and this crank has seen 8700 to 8800 rpms many many times. The BES oiling mod to the block and crank is one of the reasons this engine lives the way it does. Quality machine work is another reason why alot of people have had problems and that includes me. I would recommend using one of these cranks for anyone that is making up to 1500 horsepower. Hope this helps people that have been on the fence about using a 700.00 to 800.00 crank in an engine making decent horsepower. I purchased mine from Butler Performance and highly recommend them.
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540 c.i. Ultra Street Combo Tiger Heads with Tiger Intake Induction Solutions fogger with .046 jet First ultra street/ultimate street NOS car to get into the 4's! 1.079 4.559 153.23. 3100 lbs 7.77 @ 169 1/4 Mile (2015) with EHTTFMF!! T2TTFMF! Special Thanks to: Ron at Rhodes Custom Auto Butler Peformance Jim Hostler's Transmissions (HOSGTO) on here Induction Solutions BES Racing Engines. Cheeseburger VP Racing Fuels Calvert Racing Last edited by Jeff Kinsler; 12-15-2018 at 02:19 PM. |
#2
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Great information Jeff.
I have a new SG 4.500 crank that came from AP but I’ve not heard a lot of feedback on them so I’m hesitant to use it. I do have a 4.250 SCAT crank so your post has been a plus.
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Jack Ferris RestoRacing LLC www.restoracing.com Sandy, UT --------------------------------------------------- |
#3
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I ran a 4.250 Scat that was turned down to 4.150 when I was running the 499 cubic inch deal and that was fine also
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540 c.i. Ultra Street Combo Tiger Heads with Tiger Intake Induction Solutions fogger with .046 jet First ultra street/ultimate street NOS car to get into the 4's! 1.079 4.559 153.23. 3100 lbs 7.77 @ 169 1/4 Mile (2015) with EHTTFMF!! T2TTFMF! Special Thanks to: Ron at Rhodes Custom Auto Butler Peformance Jim Hostler's Transmissions (HOSGTO) on here Induction Solutions BES Racing Engines. Cheeseburger VP Racing Fuels Calvert Racing |
#4
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Nice info Jeff....... But you're on the 4.25 stroke max hit list now.
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1963 Cat SD Clone (old school) streeter 1964 GTO post coupe, tripower, 4speed (build) 1965 GTO 389 tripower, 4 speed, driver 1966 GTO dragcar 1966 GTO Ragtop 1969 Tempest ET clone street/strip 1969 GTO Judge RA lll, auto 1969 GTO limelight Conv. 4speed go and show (sold) 1970 GP SSJ 1970 GTO barn find..TLB…390 horse?….yeh, 390 1972 GTO 455 HO, 4 speed, (build) 1973 Grand Safari wagon, 700hp stoplight sleeper 525ci DCI & 609ci LM V head builds |
#5
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Quote:
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#6
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Good info....thanks
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#7
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This must be fake news. I read on here that the ECM does not share information.
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#8
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LMAO^^^
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East Coast Mafia TTFMF Making CVWHAT's great again. I guess it took a deplorable ECM member to do it! Quote:
Fastest Blow-thru Pontiac powered car in the Country 8.440@166.97 (3465lbs) Fastest Pontiac CV-1 car on the planet with only 6 passes on the combo: 4.80@147.65/ 7.49@180.12MPH (3365lbs) |
#9
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Any pics of the BES oiling mod to the block and crank?
How about pics of the crank oil holes on mains and rods? Is the rear seal area smooth or cross-hatched? Thanks.
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#10
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Quote:
IMO, I don't think that would be fair to BES to put that out there. They are in business to make money. It would be different if he came up with it himself and he wasn't going to market it. Jeffy might and that's his pejorative.
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East Coast Mafia TTFMF Making CVWHAT's great again. I guess it took a deplorable ECM member to do it! Quote:
Fastest Blow-thru Pontiac powered car in the Country 8.440@166.97 (3465lbs) Fastest Pontiac CV-1 car on the planet with only 6 passes on the combo: 4.80@147.65/ 7.49@180.12MPH (3365lbs) |
#11
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Quote:
That's fine on BES thing. It's probably well known anyway to most builders. Goes along with Quality machine work
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#12
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He's trying to impress AQ
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#13
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#14
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Here is a pic of what Eagle main oiling looks like. Essentially, a rough, giant trough, carved into the crankshaft journal. No scoop or lead into the direction of crank rotation. So large, the depression takes valuable support area away from the crankshaft. Many of the cheap Chinese shafts utilize this low cost approach of feeding oil to the bearings. If your making a few hundred HP with a V-8, probably works OK. NONE of the quality crankshaft manufacturers use this cut rate approach to oiling. Crower, Moldex, Winberg, Bryant, and now apparently Scat, choose to oil the mains properly with carefully designed scoops and directional oil flow. Not the best place to cut corners IMO.
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#15
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Here are a couple of pics of what a correct main oil feed should look like.
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#16
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Better pics of Eagle stuff.
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#17
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Thanks for the info, Jeff. I've had very good results with my 4.00" Scat crank I bought from BOP. Saved a ton of money and time compared to waiting on a billet crank.
Jim
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****'63 Tempest, 475" IAII, Wenzler Super Chief heads, converted to blown alcohol, Birdcatcher, Littlefield 10-71 high helix. Best pass to date: 7.67 @ 181.59 (1/4 mi.), 4.95 @ 143.67 (1/8 mi.), 1.18 (60 ft) 7.75 @ 178 pass: https://www.youtube.com/watch?v=Iez3...ature=youtu.be First seven second pass(7.98): https://wwwoutube.com/watch?v=DK17...ature=youtu.be Thanks to Paul Carter @ Koerner Racing Engines |
#18
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Glad to hear it. Butler is almost thru with my 535 short block and that’s the crank we used with Oliver rods
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1965 TriPower GTO, 1967 GTO, 1969 GTO, 1969 Judge, 1972 GTO, 1977 Smokey and the Bandit, 1989 TA ProStreet, 1968 Firebird NHRA 10.90 racecar, 1963 Tempest S/Gas |
#19
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LOL..
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#20
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Yea I will not post it for the reason above but anyone can send their stuff there to get it machined. I think it actually was talked about on py somewhere and people were saying that's not a good way to do it.
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540 c.i. Ultra Street Combo Tiger Heads with Tiger Intake Induction Solutions fogger with .046 jet First ultra street/ultimate street NOS car to get into the 4's! 1.079 4.559 153.23. 3100 lbs 7.77 @ 169 1/4 Mile (2015) with EHTTFMF!! T2TTFMF! Special Thanks to: Ron at Rhodes Custom Auto Butler Peformance Jim Hostler's Transmissions (HOSGTO) on here Induction Solutions BES Racing Engines. Cheeseburger VP Racing Fuels Calvert Racing |
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