[MI] GM SBC custom intake
Thread Starter
Joined: Mar 2017
Posts: 5
Likes: 12
From: Allendale MI
Engine: SD 5.7 TPI
Transmission: 700r4
Axle/Gears: 10 bolt 3.42 LSD
GM SBC custom intake
Received this on a package deal. Have fuel rails to go with. Lt5 throttle body. $450 plus shipping
Last edited by 79TPI; Nov 7, 2021 at 06:51 PM. Reason: Retitle
Supreme Member
Joined: May 2005
Posts: 1,058
Likes: 4
From: Malvern, Arkansas
Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: GM Prototype intake
Pics of runners please
Joined: Oct 2001
Posts: 12,232
Likes: 1,166
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: GM Prototype intake
Thought those were used on some boat engines?
Thread Starter
Joined: Mar 2017
Posts: 5
Likes: 12
From: Allendale MI
Engine: SD 5.7 TPI
Transmission: 700r4
Axle/Gears: 10 bolt 3.42 LSD
Joined: May 2001
Posts: 1,432
Likes: 507
From: Pflugerville, Texas
Car: 92 Heritage Camaro Z28
Engine: 350 TPI
Transmission: auto
Axle/Gears: 3.23 Limited Slip
Re: GM Prototype intake
I have a 92 camaro with 350 and 5 speed and t-tops from the factory. No such thing from GM on the Camaro I just described.
Do you see what I mean?
Documentation will help your sale.
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Joined: Aug 2009
Posts: 2,102
Likes: 8
From: Clinton Township, Michigan
Car: 91 GTA, 73 Z28
Engine: 355, 6.0L
Transmission: TH350, 4L80E
Axle/Gears: 3.42, 3.73
Re: GM SBC custom intake
did you buy the zz4 heads with it? id be interested in both for what they were listed for.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: GM SBC custom intake
Does the top come off to expose the plenum or is that just a cover for show?
Pics of the underside please - particularly that alum plate that is bolted on
Pics of the underside please - particularly that alum plate that is bolted on
Supreme Member
Joined: Oct 2000
Posts: 3,245
Likes: 812
From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Re: GM SBC custom intake
Any idea what is going on w/that "skirt" all the way around the base of the....plenum, is it? 
How about, any idea what fuel rails it "wants"?
the thing is definitely a unique looking unit.
How about, any idea what fuel rails it "wants"?
the thing is definitely a unique looking unit.
Thread Starter
Joined: Mar 2017
Posts: 5
Likes: 12
From: Allendale MI
Engine: SD 5.7 TPI
Transmission: 700r4
Axle/Gears: 10 bolt 3.42 LSD
Re: GM SBC custom intake
Plenum over the runners. Factory fuel rails bolt on. Have a set to go with.
Supreme Member
Joined: Oct 2000
Posts: 3,245
Likes: 812
From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Re: GM SBC custom intake
I'm still trying to figure out the "turtle shell", or "skirt" long the bottom of the plenum. I'm interested in buying this thing, but want to understand it better. Do the runner protrude into the plenum? Like the BMW M5, "Box of snakes" intake? So the "skirt" isn't a wall, it's actually part of the plenum? Odd looking but I like that it's different.
Thread Starter
Joined: Mar 2017
Posts: 5
Likes: 12
From: Allendale MI
Engine: SD 5.7 TPI
Transmission: 700r4
Axle/Gears: 10 bolt 3.42 LSD
Re: GM SBC custom intake
They are flush to the plenum. Open plenum with Removeable anti reversion plates.
Supreme Member
Joined: Oct 2000
Posts: 3,245
Likes: 812
From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Re: GM SBC custom intake
Thanks.
IDK what to think of it! On the inside, it looks fabricated. IDK. It looks like the rear runners are shorter than the fronts?
IDK what to think of it! On the inside, it looks fabricated. IDK. It looks like the rear runners are shorter than the fronts?
Thread Starter
Joined: Mar 2017
Posts: 5
Likes: 12
From: Allendale MI
Engine: SD 5.7 TPI
Transmission: 700r4
Axle/Gears: 10 bolt 3.42 LSD
Re: GM SBC custom intake
It is fabricated, all runners equal length. Reversion plates Removeable for open plenum.
Joined: Jun 2001
Posts: 8,028
Likes: 93
From: DC Metro Area
Car: 87TA 87Form 71Mach1 93FleetWB 04Cum
Re: GM SBC custom intake
Wow, I wish I knew what the history on that was/what it was designed for. I've never seen anything like it and not sure what is going on with what you're calling anti-reversion plates. I've been very into some more obscure especially SBC stuff and I've never seen anything like this.
Joined: Dec 2004
Posts: 16,929
Likes: 1,016
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: GM SBC custom intake
https://www.ebay.com/itm/165132759847
If anyone needs I have these rails , would go well with the intake
If anyone needs I have these rails , would go well with the intake
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