Cutting holes in a perfectly good hood - The 1947 - Present Chevrolet & GMC Truck Message Board Network

XXL · 07-30-2009, 11:50 PM

I've been stewing on this project for quite a while, and thanks to some CAD work by slammed67, some machining by mekdad, much finagling by rokcrln, and way too many pesos, it's time to post pictures.

First, you've got to yank a nearly new Holley 390 4bbl. Then you've got to cut on a perfectly good Clifford manifold.

XXL · 07-30-2009, 11:58 PM

Next, you take the Vintage Speed 3x2-to-4bbl adapter as the conceptual model, and a zillion different measurements, and feed them to slammed67, who turns out some CAD files.

Note: There's a fundamental interference problem with running an off-the-shelf 3x2 setup. It's called a firewall. And, this isn't a hot rod, but rather, I'm trying to achieve a particular style. With that in mind, the manifold may not seem so odd after all.

XXL · 07-31-2009, 12:01 AM

After a few mid-air adjustments to the design, waiting for the brown truck to arrive from points far and wide, and 17 trips to the hardware store, you end up with this assembly...

XXL · 07-31-2009, 12:07 AM

Once this contraption is mounted on the motor, you'll find that there's a clearance problem with the hood... but that, ladies and gentlemen, is the essence of the plan

XXL · 07-31-2009, 12:10 AM

Now, you've got to solve that clearance problem with the hood...

XXL · 07-31-2009, 12:12 AM

... and make it look like you actually had a plan...

XXL · 07-31-2009, 12:15 AM

Build a bit of dimensionality into the holes. Flat holes are so... flat.

BAGNDRAGIT · 07-31-2009, 12:17 AM

thats lookin pretty fancy there, cant wait to see the finished product!!!!!

mclairmo · 07-31-2009, 12:20 AM

You are brave, I would be scared to cut a hole in the hood. How will the fuel distribution be with the front carb so far away and the back carb right on top of the opening to the plenum? Will you have to jet that back one lean and front one rich? How do you balance them?

XXL · 07-31-2009, 12:21 AM

Weld...

VA72C10 · 07-31-2009, 12:21 AM

Very cool. I like your build because you're willing to really step outside the "box" and do things no one else has tried. And everything is executed very well. Good work!!!

XXL · 07-31-2009, 12:23 AM

Do the finish work and prime...

XXL · 07-31-2009, 12:24 AM

Voila...

Jim_PA · 07-31-2009, 12:24 AM

Awesome!

BAGNDRAGIT · 07-31-2009, 12:25 AM

that is some wicked stuff, do you have a shot a lil further away?

XXL · 07-31-2009, 12:30 AM

Quote:

Originally Posted by mclairmo

How will the fuel distribution be with the front carb so far away and the back carb right on top of the opening to the plenum? Will you have to jet that back one lean and front one rich? How do you balance them?

Well, you got ahead of me on my posting...

Actually, if you study this pic closely, you'll note that the fuel inlets on the front 2 carbs are plugged. The front 2 carbs are externally fully functional dummies. All the linkage on them works, but they don't squirt fuel. In fact, while my log manifold has pockets under the carbs, they don't connect with one another. What I have is a 2bbl carb with a straight shot into the manifold. Simplicity at its finest

OARNGESI · 07-31-2009, 12:32 AM

That looks really cool your truck is gona be nice

VA72C10 · 07-31-2009, 12:44 AM

Very cool!

hilandr452 · 07-31-2009, 01:17 AM

The added bonus is that you now have 2 spare carbs!!

Dan

BluTrukker · 07-31-2009, 07:03 AM

That is the coolest thing I have ever seen!

The quality and originality of the work you do is amazing!

68 short step · 07-31-2009, 07:53 AM

that is really nice engineering on all parts......did mekdad mill the new manifold??

Bamm · 07-31-2009, 07:58 AM

Cool factor = 10

petey-pablo · 07-31-2009, 08:08 AM

That looks awsome good work you did there.. I have one question though will the motor move, and cause the carbs to rub on the hood on acceleration like torque?

MrBlue · 07-31-2009, 08:42 AM

That is Awesome! Nothing like good old American Engineering!
MrBlue

Ole Blue 68 · 07-31-2009, 09:04 AM

I like it, I like it ahhhlot.

07-30-2009, 11:50 PM	#1
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Cutting holes in a perfectly good hood I've been stewing on this project for quite a while, and thanks to some CAD work by slammed67, some machining by mekdad, much finagling by rokcrln, and way too many pesos, it's time to post pictures. First, you've got to yank a nearly new Holley 390 4bbl. Then you've got to cut on a perfectly good Clifford manifold. Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-30-2009, 11:58 PM	#2
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Re: Cutting holes in a perfectly good hood Next, you take the Vintage Speed 3x2-to-4bbl adapter as the conceptual model, and a zillion different measurements, and feed them to slammed67, who turns out some CAD files. Note: There's a fundamental interference problem with running an off-the-shelf 3x2 setup. It's called a firewall. And, this isn't a hot rod, but rather, I'm trying to achieve a particular style. With that in mind, the manifold may not seem so odd after all. Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-31-2009, 12:01 AM	#3
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Re: Cutting holes in a perfectly good hood After a few mid-air adjustments to the design, waiting for the brown truck to arrive from points far and wide, and 17 trips to the hardware store, you end up with this assembly... Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-31-2009, 12:07 AM	#4
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Re: Cutting holes in a perfectly good hood Once this contraption is mounted on the motor, you'll find that there's a clearance problem with the hood... but that, ladies and gentlemen, is the essence of the plan Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-31-2009, 12:10 AM	#5
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Re: Cutting holes in a perfectly good hood Now, you've got to solve that clearance problem with the hood... Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-31-2009, 12:12 AM	#6
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Re: Cutting holes in a perfectly good hood ... and make it look like you actually had a plan... Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-31-2009, 12:15 AM	#7
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Re: Cutting holes in a perfectly good hood Build a bit of dimensionality into the holes. Flat holes are so... flat. Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-31-2009, 12:17 AM	#8
BAGNDRAGIT Just Not Low Enough! Join Date: Mar 2009 Location: Phoenix, AZ Posts: 525	Re: Cutting holes in a perfectly good hood thats lookin pretty fancy there, cant wait to see the finished product!!!!! __________________ NEED ELECTRICAL HELP? ASK ME! 67-72 Full Wiring Diagrams Lots Of Info, TAKE A LOOK 1967 Chevy C-10 Shortbox Bagged 327 4spd Previous: 1971 Chevy C-10 Short Sep I6 Auto (Traded) 1973 Chevy C-20 THE REDNECK BATTLE TRUCK 2001 Chevy Silverado 2Dr 5.3L Shortbox. R.I.P. 1969 Volkswagen Bug This is my first meeting, I have a horsepower problem.

07-31-2009, 12:20 AM	#9
mclairmo Registered User Join Date: Jan 2006 Location: Take Off Posts: 1,908	Re: Cutting holes in a perfectly good hood You are brave, I would be scared to cut a hole in the hood. How will the fuel distribution be with the front carb so far away and the back carb right on top of the opening to the plenum? Will you have to jet that back one lean and front one rich? How do you balance them?

07-31-2009, 12:21 AM	#10
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Re: Cutting holes in a perfectly good hood Weld... Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-31-2009, 12:21 AM	#11
VA72C10 VA72C10 Join Date: Mar 2008 Location: Midlothian, VA Posts: 25,267	Re: Cutting holes in a perfectly good hood Very cool. I like your build because you're willing to really step outside the "box" and do things no one else has tried. And everything is executed very well. Good work!!! __________________ Looking for a 67-72 swb or blazer project in or around VA.

07-31-2009, 12:23 AM	#12
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Re: Cutting holes in a perfectly good hood Do the finish work and prime... Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-31-2009, 12:24 AM	#13
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Re: Cutting holes in a perfectly good hood Voila... Attached Images __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

07-31-2009, 12:24 AM	#14
Jim_PA Registered User Join Date: May 2005 Location: PA Posts: 2,696	Re: Cutting holes in a perfectly good hood Awesome!

07-31-2009, 12:25 AM	#15
BAGNDRAGIT Just Not Low Enough! Join Date: Mar 2009 Location: Phoenix, AZ Posts: 525	Re: Cutting holes in a perfectly good hood that is some wicked stuff, do you have a shot a lil further away? __________________ NEED ELECTRICAL HELP? ASK ME! 67-72 Full Wiring Diagrams Lots Of Info, TAKE A LOOK 1967 Chevy C-10 Shortbox Bagged 327 4spd Previous: 1971 Chevy C-10 Short Sep I6 Auto (Traded) 1973 Chevy C-20 THE REDNECK BATTLE TRUCK 2001 Chevy Silverado 2Dr 5.3L Shortbox. R.I.P. 1969 Volkswagen Bug This is my first meeting, I have a horsepower problem.



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07-31-2009, 12:32 AM	#17
OARNGESI Registered User Join Date: Sep 2008 Location: CASA GRANDE AZ Posts: 4,276	Re: Cutting holes in a perfectly good hood That looks really cool your truck is gona be nice __________________ 70 SWB STEPSIDE 70 BLAZER 09 challenger

07-31-2009, 12:44 AM	#18
VA72C10 VA72C10 Join Date: Mar 2008 Location: Midlothian, VA Posts: 25,267	Re: Cutting holes in a perfectly good hood Very cool! __________________ Looking for a 67-72 swb or blazer project in or around VA.

07-31-2009, 01:17 AM	#19
hilandr452 Registered User Join Date: Jan 2009 Location: Colorado Springs, CO Posts: 357	Re: Cutting holes in a perfectly good hood The added bonus is that you now have 2 spare carbs!! Dan __________________ Dan Smith Colorado Springs, CO 71 GMC Custom Camper "Longhorn" 454, TH400 73 Chevy Camper Special (Yes, it's badged a camper special) Flat Bed Motorhome conversion 454, standard tranny *"DON'T TREAD ON ME !!!"* My Project: http://www.picturetrail.com/sfx/album/view/20829244 , http://www.picturetrail.com/sfx/album/view/24654442

07-31-2009, 07:03 AM	#20
BluTrukker BOHICA Join Date: Mar 2008 Location: Stewartville, MN Posts: 440	Re: Cutting holes in a perfectly good hood That is the coolest thing I have ever seen! The quality and originality of the work you do is amazing! __________________ Trying to save someone from their own stupidity is like teaching a pig to dance. It is a waste of your time, and it annoys the pig!

07-31-2009, 07:53 AM	#21
68 short step Senior Member Join Date: Aug 2005 Location: tulsa OK Posts: 3,070	Re: Cutting holes in a perfectly good hood that is really nice engineering on all parts......did mekdad mill the new manifold??

07-31-2009, 07:58 AM	#22
Bamm Cowboy Fan for Life!!!!!! Join Date: Apr 2002 Location: Amelia, Virginia Posts: 2,921	Re: Cutting holes in a perfectly good hood Cool factor = 10 __________________ 1967 ShortBed Fleetside 3/4 Drop 350/700R4 Tilt wheel 18 x 8 Torque Thrust II's Future mods: All new gauges & wood bed My Zip is 23002 I ship UPS, USPS

07-31-2009, 08:08 AM	#23
petey-pablo "THE GREEN GOBLIN" Join Date: Mar 2008 Location: Fremont Ca. Posts: 1,025	Re: Cutting holes in a perfectly good hood That looks awsome good work you did there.. I have one question though will the motor move, and cause the carbs to rub on the hood on acceleration like torque? __________________ Petey-pablo "THE GREEN GOBLIN" 1972 Cheyenne 10 Short Fleet Side Front 2.5inch Spindles with 2inch Springs Rear 4inch drop Springs. 454BBC TH400,Posi 1971 Cheyenne 10 Long Fleet Side 454BBC TH350,Posi Sold Drive it like you stole it! Petey-pablo@sbcglobal.net

07-31-2009, 08:42 AM	#24
MrBlue Registered User Join Date: May 2009 Location: Laporte, IN Posts: 167	Re: Cutting holes in a perfectly good hood That is Awesome! Nothing like good old American Engineering! MrBlue

07-31-2009, 09:04 AM	#25
Ole Blue 68 Registered User Join Date: Aug 2005 Location: Philly Posts: 1,140	Re: Cutting holes in a perfectly good hood I like it, I like it ahhhlot.

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