c3 cold air intake questions

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Apr 24, 2007 | 11:42 PM

#21

TheSkunkWorks

Le Mans Master

Joined: Apr 2007

Posts: 7,353

Likes: 72

From: Graceland in a Not Correctly Restored Stingray

Quote:

Originally Posted by flynhi

Correct on both counts. I did have the hood unlatched and open a bit and I should have said positive pressure. I was puzzled by this since GM and others clearly had different results.
Regardless, I prefer my method since it looks OE with a flat hood at the cowl.

Thanks. Was hoping you didn't take that wrong. It's probably just one of those difficult to duplicate tests where "your results may vary".

I've had both front grill and cowl fed inductions. Each work, but I do like that L88 bulge...

Apr 25, 2007 | 12:50 AM

#22

bobs77vet

Race Director

Joined: Sep 2004

Posts: 11,874

Likes: 263

From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod

Quote:

Originally Posted by batsmith

....I can't believe that I am the only one interested in getting cold air to a carb with a modern look, especially considering how hot the engine compartments are on old vettes. I guess I 'll fab the whole thing myself....

i am right behind you on this one keep me posted on what you are doing......

Apr 25, 2007 | 01:00 AM

#23

saudivette

Melting Slicks

Joined: May 2004

Posts: 2,084

Likes: 1

From: Aussie expat in Saudi Arabia

Quote:

Originally Posted by jpatrick636

How about something like this?

Good pic, I had a mental picture of making something like this for when I fit a hood scoop

Apr 25, 2007 | 02:12 AM

#24

SEVNT6

Le Mans Master

Joined: Jan 2007

Posts: 8,012

Likes: 3,342

From: Omaha NE

2025 c3 ('74-'82) of the Year Finalist - Unmodified

2023 C3 of the Year Finalist - Unmodified

2022 C3 of the Year Finalist - Unmodified

2020 C3 of the Year Finalist - Unmodified

When my Vette was maybe a couple of years old I thought I'd put an open early style chrome air filter on it. It was in the fall & the air was cool and man it sure did sound nice when I opened her up but it didn't feel as quick at speed.....

A week or two later I put it back to stock.....

Apr 26, 2007 | 02:48 PM

#25

batsmith

Thread Starter

Intermediate

Joined: Apr 2007

Posts: 28

Likes: 0

From: Edmond OK

Quote:

Originally Posted by flynhi

These fed two flex hoses that connected to a closed round air filter OE box on my carb. This looked more symmetrical and worked well enough.

When I converted to the 383 TPI, I needed a slightly higher hood to clear the tpi plenum so I installed a BB hood. This gave me more clearance over the radiator frame so I fabbed a larger scoop that attaches to the radiator frame, feeds the air filter at the front of the throttle body and seals to the underside of the hood as it closes.

I was leaning towards the same thing you set up when you bought the larger hood, then running that into two hoses, then to the carb. I really want the carb piece to be small and out of the way so that the carb is exposed and there is plenty of room to work without having to remove the breather. I have already started doing mach ups for the two main pieces.

Do you have any pictures of your set-up that could could post?

Apr 26, 2007 | 02:52 PM

#26

batsmith

Thread Starter

Intermediate

Joined: Apr 2007

Posts: 28

Likes: 0

From: Edmond OK

Quote:

Originally Posted by bobs77vet

i am right behind you on this one keep me posted on what you are doing......

Thanks, I will try to post some pics when I get things going, I will also try to make it easy to duplicate if I can.

Sevnt6

your car sure makes a case for stock, very, VERY nice!!!