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the more I see this, the more I love the build. I have always had a thing for seeing cars that were modded back back in their hay day restored, but restored while maintaining the mods they had which were 'time period correct'. Those RMCR supercharger kits are a small piece of history back when LT1's ruled the road, there was something really unique about seeing one back then and even more so now. Seems like you're really on the right track to not only make it cool, but fast as hell too.

I'm almost done with an LSA swap on my car, and while I'm looking forward to the functionality of the LS engine it's nowhere near as cool to me as popping the hood and seeing the correct engine for these cars with the supercharger kit that we all drooled over before LS swaps became the norm.
 
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Discussion Starter #23
Thank you, that means a lot coming from you. I have been following your car as well. I wish I has some of your skill! I really like all that you have done with your car and happily admit it is cooler than my easier
“rebuild”.
I had a shop go to restore my car and after they went out of business, I brought my car home in pieces. It has been a long road figuring out where each nut and bolt goes (when I did not disassemble it), but I have recently thrown a lot of money at this to try and get this done.
I hope to have a reliable driving Impala by spring of 2021...

PS. I’ll throw in a shot of what I started with
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Discussion Starter #24
Got the aftercooler plumbing done. Found my oil cooler lines were hand bent from accessory drive being on that side. Have to re-bend to get new blower bracket on.
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Discussion Starter #25
I mocked up the supercharger side this weekend. Some fitting and 1 occasion where the hack saw came out. The blower side is really tight and the 12 rib belt doesn’t make it any easier.
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Discussion Starter #27
Good eye!
Yes, those bolts came with the blower kit. At a torque spec of 30 ft. lbs., I was not expecting Grade 8. Are you thinking they should be Grade 8?
(They are only finger tight for the mock up, so it is not too late).
 

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Yes, with the bending loads due to the stack up, blower pulley on top of damper then threaded to hub, I would be putting something quality in there.
First choice would be something ARP selected by shank length even if you have to remove excess thread from the overall length.
Step up from that would be studding it with ARP hardware.
Big blower pulleys hanging of the SB Chevs tiny crank snout is bad enough.
When you add in the extended length the LT1 adds, it gets scary.
The added benefit to the torque head set up is if the damper works loose or the key shears due to blower load, the engine shuts off.
Witnessed this recently.
May I recomend re checking the damper bolt from time to time.
 

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Discussion Starter #29
Great advice. As an m.e. with a metallurgy background, I too am uneasy with how much the SB LT1 snout gets loaded on a double wide pulley set up. I will certainly take your advice and upgrade those bolts on final assembly. Thank you for offering the help. I will also keep an eye on the crank bolt.
 

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Discussion Starter #30
So I skipped work today and got the oil cooler, radiator , and fans in (driver side fan relocated slightly). Had to throw on the blower temporarily to trim the top (plastic) radiator shroud for the blower inlet elbow. I’m happy with the belt wrap on the the RMCR bracketry.
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Discussion Starter #31 (Edited)
I don’t know if it will be enough, but after this evening, there are many linear inches of radiator fin on the car.
Oh, that bumper is disgusting. After the car is up and running, we will paint it (I am not done dropping my ratchet on it yet).

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Discussion Starter #32
Temporarily put centrifugal and aftercooler on so I could route supercharger oil lines, radiator hose bypass, and aftercooler water lines.
I hope to permanently mount it all next weekend.

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the more I see this, the more I love the build. I have always had a thing for seeing cars that were modded back back in their hay day restored, but restored while maintaining the mods they had which were 'time period correct'. Those RMCR supercharger kits are a small piece of history back when LT1's ruled the road, there was something really unique about seeing one back then and even more so now. Seems like you're really on the right track to not only make it cool, but fast as hell too.

I'm almost done with an LSA swap on my car, and while I'm looking forward to the functionality of the LS engine it's nowhere near as cool to me as popping the hood and seeing the correct engine for these cars with the supercharger kit that we all drooled over before LS swaps became the norm.
Yep.

As far as bang for your buck, nothing beats a junkyard LS with a turbo. But, there's something special about a preserved piece of history.

Not to mention... the coolest cars certainly aren't cheap. :cool:
 

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Discussion Starter #34
Yep.

As far as bang for your buck, nothing beats a junkyard LS with a turbo. But, there's something special about a preserved piece of history.

Not to mention... the coolest cars certainly aren't cheap. :cool:
I effin HATE turbo set ups, so that is not an option in any car I will ever own. The nature of the exhaust gasses doing the work means too much of a delay for my tastes. That's just me though, I don't really like high revving engines either.
Truth be told, I really prefer a roots type of blower for the power delivery and torque. It is just that I have never seen the roots blowers fitted on an LT1 (except for 1 by Keith Meese and the years long effort by a guy on this forum... For me the only viable option was a centrifugal.
 

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Discussion Starter #35
Did nothing last weekend (out of town guests). Busy all day Saturday. Finally spent a few hours with various connections today. Blower is fully mounted now, and I got rid of that ugly green belt - replaced the Gates “heavy duty” belt with a Gates “RPM” belt (which is a proper black color and a better supercharger belt).

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