94 z28 boosted 383 build
05-12-2013, 08:56 PM
#21
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Like mentioned earlier using stock crank is nothing but a plus. Its cast Iron and they are stronger then you think. Heck I bet the stock crank is stronger then a forged EAGLE crank. Plus you save money while your at it. Recondition the crank, get it balanced and run a boosted 355. If not then do a top end rebuild and add forged pistons and rods. Plenty of guys making 500hp NA at the crank still being street-able. I wouldnt trust golen unless he built the motor with you. Dismiss the idea of boost unless its built to the max with a quality procharger or turbo. Start out small first then work your way up.
Other then that wish you luck. Get some good wheels & tires on that thing.
Other then that wish you luck. Get some good wheels & tires on that thing.
05-13-2013, 12:08 PM
#22
the crank is a cast scat crank.
i plan on running the c6 zo6 rims from OE Whell although i wish they had them in gunmetal, i think that would look better with the blue
http://www.oewheelsllc.com/Wheels_3/...Wheels-Black_3
why dont you trust golen? up until now i havent heard anything but good reviews for his motors/work, especially the LT1s and LS1s he builds
i plan on running the c6 zo6 rims from OE Whell although i wish they had them in gunmetal, i think that would look better with the blue
http://www.oewheelsllc.com/Wheels_3/...Wheels-Black_3
why dont you trust golen? up until now i havent heard anything but good reviews for his motors/work, especially the LT1s and LS1s he builds
05-13-2013, 12:29 PM
#23
the crank is a cast scat crank.
i plan on running the c6 zo6 rims from OE Whell although i wish they had them in gunmetal, i think that would look better with the blue
http://www.oewheelsllc.com/Wheels_3/...Wheels-Black_3
why dont you trust golen? up until now i havent heard anything but good reviews for his motors/work, especially the LT1s and LS1s he builds
i plan on running the c6 zo6 rims from OE Whell although i wish they had them in gunmetal, i think that would look better with the blue
http://www.oewheelsllc.com/Wheels_3/...Wheels-Black_3
why dont you trust golen? up until now i havent heard anything but good reviews for his motors/work, especially the LT1s and LS1s he builds
05-14-2013, 01:14 PM
#26
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Glad I got to read this, was considering Golen for a motor myself. But never would I make the mistake of a cast crank in an N/A motor let alone planned for boost. I agree with Buf post back when it becomes a grenade.
I'm doing a boosted 383 and will be using callies for my crank/rods, even if I don't boost it I'm using them. Cast is junk 110%
I'm doing a boosted 383 and will be using callies for my crank/rods, even if I don't boost it I'm using them. Cast is junk 110%
05-14-2013, 01:20 PM
#27
Launching!
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Seriously?
I have never broken a crankshaft and I have run a blower on two GM cast cranks. A 6-71 on a 355 with iron bowtie heads in a tube chassis '84 Trans Am that went 9.63 @ 143 no problems.
One was a 350 cube motor with a B&M 144 on it.
I also know of plenty of dirt track boys who spin factory cast cranks to 9000 RPM on a nightly basis.
Cast better than forged? Hell no.
110% junk? That's a bit generalized.
I have never broken a crankshaft and I have run a blower on two GM cast cranks. A 6-71 on a 355 with iron bowtie heads in a tube chassis '84 Trans Am that went 9.63 @ 143 no problems.
One was a 350 cube motor with a B&M 144 on it.
I also know of plenty of dirt track boys who spin factory cast cranks to 9000 RPM on a nightly basis.
Cast better than forged? Hell no.
110% junk? That's a bit generalized.
05-14-2013, 01:47 PM
#28
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let me re phrase that then, the cast cranks from places like scat and eagle are junk. Had I not chewed up my OE crank in my 4 bolt main motor I would be using it for a 355 setup. I know the gm cast stuff is good, just not the aftermarket crap.
Should have been more clear on what I meant.
Should have been more clear on what I meant.
05-14-2013, 05:55 PM
#29
100% honesty here, nobody wants to see your motor grenade, but if you dont change your crank for a forged unit, it will. If you dont have the $800 for a forged crank, sell your cast one and your pistons, use the stock crank and get some new pistons. You just spent thousands of dollars building this motor, that crank is NOT up to the task.
05-14-2013, 09:24 PM
#31
I ran a cast Scat 9000 crank in a supercharged 383 to a best of 10.6 @ 3850lbs with an M6. Best MPH was 137. The math puts it around 600rw. Ran that motor for 7 or 8 years.
I still have the crank and will use it again one day. Don't know why the Scat stuff has a bad rep. I have not read of one breaking but believe what you will. Any poorly built motor will break the best of parts.
I still have the crank and will use it again one day. Don't know why the Scat stuff has a bad rep. I have not read of one breaking but believe what you will. Any poorly built motor will break the best of parts.
05-14-2013, 11:30 PM
#32
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Glad I got to read this, was considering Golen for a motor myself. But never would I make the mistake of a cast crank in an N/A motor let alone planned for boost. I agree with Buf post back when it becomes a grenade.
I'm doing a boosted 383 and will be using callies for my crank/rods, even if I don't boost it I'm using them. Cast is junk 110%
I'm doing a boosted 383 and will be using callies for my crank/rods, even if I don't boost it I'm using them. Cast is junk 110%
05-15-2013, 08:54 AM
#34
thanks guys for the info. when i went to research the parts list he gave me, i never saw anything about the aftermarket cast cranks grenading motors. i do trust golen as my dad had him build a 355 short block for his 76 nova and that has been going strong for 2 years now, although i do not know what crank he used. I left him message, we shall see what he says.
[edit] i talked to golen about this, he said it is a Scat cast steel crank not cast iron, which makes it much stronger than the junk eagle cranks and even the stock GM cast crank. he has run these cranks on at least 30 motors in the past couple years on 15psi and has yet to have a problem. so i feel better about this. what do you guys think?
[edit] i talked to golen about this, he said it is a Scat cast steel crank not cast iron, which makes it much stronger than the junk eagle cranks and even the stock GM cast crank. he has run these cranks on at least 30 motors in the past couple years on 15psi and has yet to have a problem. so i feel better about this. what do you guys think?
Last edited by hokeplaya05; 05-15-2013 at 10:25 AM.
05-15-2013, 11:49 AM
#35
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Can't say I've had personal experience with the cast stuff, but I'm hoping it goes good for you. I've always read on here never used cast, they break. Sadly only time will tell how yours does.
05-15-2013, 01:32 PM
#36
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Budget builds have their place and they are where cast cranks belong. Whether they are iron or steel is of no difference. If you really want to push your engine, go forged. If the engine is street strip with a moderate horsepower goal say 450-550 CRANK hp that turns less than 7000 RPM then a cast crank will live if properly assembled.
But boosted engines need forged internals to have any confidence it their strength.
05-15-2013, 05:27 PM
#39
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I know that a lot of what is on the Internet is true but dang man. Calling cast stuff 110% junk and then admitting that you have never had an experience with them? That's harsh.
Budget builds have their place and they are where cast cranks belong. Whether they are iron or steel is of no difference. If you really want to push your engine, go forged. If the engine is street strip with a moderate horsepower goal say 450-550 CRANK hp that turns less than 7000 RPM then a cast crank will live if properly assembled.
But boosted engines need forged internals to have any confidence it their strength.
Budget builds have their place and they are where cast cranks belong. Whether they are iron or steel is of no difference. If you really want to push your engine, go forged. If the engine is street strip with a moderate horsepower goal say 450-550 CRANK hp that turns less than 7000 RPM then a cast crank will live if properly assembled.
But boosted engines need forged internals to have any confidence it their strength.
05-15-2013, 06:44 PM
#40
stock cast is strong, OLD aftermarket cast is usable, Eagle cast in the last 4-5 years is crap, not a lot of guys spend the extra $10 on Scat cast vs. Eagle so we don't really have any specific data on them vs. Eagle but smart money would still bet it is weaker than stock, closer to Eagle but maybe better machined which could make a difference. Way too many cases of under 400rwhp NA cast eagle 3.75" stroke cranks breaking in LT1s. Eagle cast are such junk even Golen stopped using them and hell he has been busted installing cranks without inspection and assembling rodbolts with AIRTOOLS.
Most Golen customers contacted a year or two after the purchase will tell you they made a mistake. Or there are always the idiots who will defend their 13 second stroker car.
Most Golen customers contacted a year or two after the purchase will tell you they made a mistake. Or there are always the idiots who will defend their 13 second stroker car.