Topic: carburetor clearance issues
in Forum: C3 Engines
Already a Member?
Click Here to Login
Not yet a Member?
Click Here to Register for Free!
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
NOW yer talkin!! 
The '73-'77 cars had the highest hoods of any of the models, other than the L88 hoods....if there's a clearance issue with your carb/air cleaner, that thing must be stickin out quite a bit! You haven't said for sure that the hood IS hitting anything, so we're not sure where to go with the info....
Adams' Apple 2010-12-20 11:46:39
The '73-'77 cars had the highest hoods of any of the models, other than the L88 hoods....if there's a clearance issue with your carb/air cleaner, that thing must be stickin out quite a bit! You haven't said for sure that the hood IS hitting anything, so we're not sure where to go with the info....
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
SPONSOR AD:: (Our Sponsors help support C3VR)
Lifetime MemberModerator
Moses Lake, WA - USA
Joined: 4/16/2005
Posts: 2134
Vette(s): 1976 L48 4-spd, Mahogany Metalic exterior, Buckskin interior 350ci/350hp, 3rd owner, fiberglass spring, 255/50-16's Torq-Thrust II
I am running a GMPP 350HO vortec heads a RPM manifold with a Berry Grant 650 dbl pumper carb. I had to go with a drop base air filter housing and I think the K&N is 3" tall. Just barely clears the hood.
I also add I have a 1/2" carb spacer so the accelerator pump clears the manifold. I am using a button head screw to hold the ari cleaner on. Here is a picture of the setup
The filter in the one picture came with the assembly with I changed out for the K&N. I also did not use the bow-tie wing nut to hold the filter down. I was like you, didn't want to have to change the hood out.
Former Member
Send PM
Jacksonville, FL - USA
Joined: 12/15/2009
Posts: 36
Vette(s): 79 L-82 4-speed. Original block now a 383 with aluminum heads, roller cam and rockers, Edelbrock intake, MSD distributor and ignition module, Speed Demon 650 carb. Rebuilt and upgraded all steering and suspension.
Glen,
Thanks for the info and pics. You have a great looking setup and a beautiful C3. I was told on the phone by a tech at Edelbrock that the RPM would not fit even without an air cleaner. I didn't believe it so was asking here. I want to use the RPM with a Holley 670 and AFR 195cc heads. I know how to measure and check for clearance but was interested in what others have used under the stock hood. Thanks again, Happy Holidays!
Lifetime MemberHOWELL, NJ - USA
Joined: 5/18/2004
Posts: 6812
Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
BC, one additional point from when I was researching my set up - I believe that the Performer RPM and the newer Airgap have the same deck to carb flange height. Something else to consider.
Before I went to an L88 hood, I had an RPM with an Edebrock carb, drop base w/ 2" filter and a K&N airraid lid under my stock 79 hood with a 1/2" to spare!
From a fellow veteran, welcome home.
Paul
Before I went to an L88 hood, I had an RPM with an Edebrock carb, drop base w/ 2" filter and a K&N airraid lid under my stock 79 hood with a 1/2" to spare!
From a fellow veteran, welcome home.
Paul
LukesVette Homepage
Veteran of Operation Iraqi Freedom
101st Airborne(AirAssault!)
God Bless America
Support Our Troops 
Former Member
Send PM
Jacksonville, FL - USA
Joined: 12/15/2009
Posts: 36
Vette(s): 79 L-82 4-speed. Original block now a 383 with aluminum heads, roller cam and rockers, Edelbrock intake, MSD distributor and ignition module, Speed Demon 650 carb. Rebuilt and upgraded all steering and suspension.
Thanks Paul,
You confirmed what I suspected. Thanks for your service. Hooah!
Bill
in Forum: C3 Engines
SPONSOR AD: (Our Sponsors help support C3VR)