Topic: Holley 4175
in Forum: C3 Fuel, Emission Control, and Exhaust Systems
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Baldwinsville, NY - USA
Joined: 1/15/2007
Posts: 19
Vette(s): 78 Silver L48 4Spd, dual exhaust, GM vortec head, Edelbrock intake, Crane 210/216 degree x .420/.454 lift, 180 thermostat, MSD street fire
I tried to install this guy over the weekend. Found that the fuel inlet was 4" too far right to make a good tubing adjustment, the vacuum inlet for the brakes was a size to small and the last straw was that I would have to scrap the old throttle hold down bracket and buy something from a hot rod supply house.
So I check all the screws on the Q-Jet and installed a new manifold gasket, never would think that a Q-Jet could idle, accelerate and run so good once it was tight.
Should I return the Holley or give it another try.
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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/
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#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Shoot...if it's runnin well with the Quad on it, I'd be sendin the Holley back....
Joel Adams
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Former Member
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Frederick, MD - USA
Joined: 9/8/2003
Posts: 3398
Vette(s): 1969 convertible L71 427/435 4-speed black interior
Stick with the Q-Jet. It'll run better anyway and get more mpg.
return the Holley. they tend to load up at idle anyway.
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Belgium
Joined: 1/5/2006
Posts: 774
Vette(s): 350/350 T-top
1970
Cortez silver -blue interior
[QUOTE=Gunslinger]Stick with the Q-Jet. It'll run better anyway and get more mpg.[/QUOTE]
more mpg... 
i hope so... 
i hope so... last rally i measured it...
between 8 to 9 mpg...
between 8 to 9 mpg...( Holley 600 cfm , double pumper....
)
)could be the traction problems....
8-9 MPG. DO YOU STILL HAVE THAT 350/350 IN THERE? YOU SHOULD DO BETTER THAN THAT. GET 8-9 WITH MY STROKER. uNLESS OF COUIRSE i REALLY GET INTO IT. THEN WE WON`T SPEAK OF MPG. MORE LIKE GPS9 gALLONS PER SECOND)
Lifetime MemberIrving, TX - USA
Joined: 8/21/2004
Posts: 4273
Vette(s): #1 -1969 Corvette Coupe Riverside Gold, black interior,MN,A/C,350/350,PS,PB,window cranks.
#2 -2000 C5, black/black, 6 sp, Bose system & lots of buttons.
I hope you returned the Holley. Your Q-Jet will handle the current gas mixture at the pumps better.
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Belgium
Joined: 1/5/2006
Posts: 774
Vette(s): 350/350 T-top
1970
Cortez silver -blue interior
[QUOTE=VETTERBOB]8-9 MPG. DO YOU STILL HAVE THAT 350/350 IN THERE? YOU SHOULD DO BETTER THAN THAT. GET 8-9 WITH MY STROKER. uNLESS OF COUIRSE i REALLY GET INTO IT. THEN WE WON`T SPEAK OF MPG. MORE LIKE GPS9 gALLONS PER SECOND)[/QUOTE]
yes Bob, 350/350 as far i know , bought it that way... sure is a SB , with what i can see : Weiand manifold and the Holley....never was on a dyno , to give a idea : i keep up with my brothers Porsche turbo 930 ( '82 -300 HP ) till i have to go to 4the gear... then i'm loosing quick ...
[/QUOTE]yes Bob, 350/350 as far i know , bought it that way... sure is a SB , with what i can see : Weiand manifold and the Holley....never was on a dyno , to give a idea : i keep up with my brothers Porsche turbo 930 ( '82 -300 HP ) till i have to go to 4the gear... then i'm loosing quick ...
Impressive! nice car by the way. it looks familiar
Former Member
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Belgium
Joined: 1/5/2006
Posts: 774
Vette(s): 350/350 T-top
1970
Cortez silver -blue interior
[QUOTE=VETTERBOB]Impressive! nice car by the way. it looks familiar[/QUOTE]
yeah we can swap after some beers and not notice it ...
[/QUOTE]yeah
we can swap after some beers and not notice it ...in Forum: C3 Fuel, Emission Control, and Exhaust Systems
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