mounting a IMPCO relocation arm

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kikkegek
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Joined: Thu Nov 17, 2011 2:12 pm
Location: Netherlands, The Hague

mounting a IMPCO relocation arm

Post by kikkegek » Wed Nov 15, 2017 5:37 am

hi guys,

I have to use a IMPCO adapter to relocate my 300mixer, because its to high on top of my carb, because of all kinds of reasons.

I am looking for info on how other have mounted these adapters/arm to relocatie their 300mixer.

it is only temporary, untill I get my TBI and vapour injection setup....but temporary, can be mounths, years as we all know hahaha

so looking for photos of others. Did you use the mounting holes that are on these adapters for extra support?
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daily: 1974 GMC 25HUNDRED Suburban - fresh rebuild 350 small block - TH350-NP203 - 4.1 end gears - IMPCO425 mixer - IMPCO model E vaporizer
project: 1977 GMC C15 Suburban - 454 big block - TH400 - gasoline
sold: 1986 Chevrolet Suburban K20 Silverado


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Steptoe
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Re: mounting a IMPCO relocation arm

Post by Steptoe » Wed Nov 15, 2017 3:38 pm

Did you use the mounting holes that are on these adapters for extra support?
A must.. a scrape bit 4mmx 15mm bar, bent and couple holes drilled each end.. one end mounts on a convenient point on the mixer extension.. mounting point or section joining nut/ bolt, down to a convenient exhaust, or power steering pump or water pump bolt.
My Spelling is Not Incorrect...It's 'Creative'

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kikkegek
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Location: Netherlands, The Hague

Re: mounting a IMPCO relocation arm

Post by kikkegek » Wed Nov 15, 2017 4:32 pm

thats what I figured. it even has the holes in the final part for it.

was just looking for confirmation and inspiration in the form of photos from other installations. Cant really find them on the web.

what are these adapters called?
daily: 1974 GMC 25HUNDRED Suburban - fresh rebuild 350 small block - TH350-NP203 - 4.1 end gears - IMPCO425 mixer - IMPCO model E vaporizer
project: 1977 GMC C15 Suburban - 454 big block - TH400 - gasoline
sold: 1986 Chevrolet Suburban K20 Silverado

C3H8
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Joined: Fri Sep 09, 2005 11:23 pm
Location: Winnipeg, Canada

Re: mounting a IMPCO relocation arm

Post by C3H8 » Wed Nov 15, 2017 11:34 pm

They were called unadapt. IMPCO and Gann used to make special adaptors that were quite clunky and heavy allowing the offsetting of 300 mixers. They came up with this system where the material was lighter and allowed various combinations to offset the 100, 200, 300, and 425 mixers. All of them require a support bracket though. Without a support bracket the seal at the carb will begin to leak resulting in mixture problems.

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kikkegek
Posts: 371
Joined: Thu Nov 17, 2011 2:12 pm
Location: Netherlands, The Hague

Re: mounting a IMPCO relocation arm

Post by kikkegek » Thu Nov 16, 2017 2:43 am

thanks C3H8 ;-)
daily: 1974 GMC 25HUNDRED Suburban - fresh rebuild 350 small block - TH350-NP203 - 4.1 end gears - IMPCO425 mixer - IMPCO model E vaporizer
project: 1977 GMC C15 Suburban - 454 big block - TH400 - gasoline
sold: 1986 Chevrolet Suburban K20 Silverado

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