HOLLEY 4175.......GOOD OR BAD?
Thread Starter
Intermediate
Joined: Jul 2002
Posts: 35
Likes: 0
From: Helotes TEXAS
HOLLEY 4175.......GOOD OR BAD?
Has anyone used the Holley 4175 650cfm spread bore carb? I am considering purchasing one and I thought it looked good because the fuel and vacuum lines match up without any mods. Any feedback is appreciated!!
John
John
Burning Brakes
Joined: May 2002
Posts: 998
Likes: 1
From: Frisco TX
Re: HOLLEY 4175.......GOOD OR BAD? (One Bad 74)
I've got one on my car now. It came with the car.
I'm going back to a QJet because of the support on here (from lars and others)...
Mine's leaking like a seive right now :) (needs rebuilt)
I'm going back to a QJet because of the support on here (from lars and others)...
Mine's leaking like a seive right now :) (needs rebuilt)
Instructor
Joined: Jan 2003
Posts: 222
Likes: 0
From: Ventura CA
Re: HOLLEY 4175.......GOOD OR BAD? (Matt Gruber)
I had a 4165 on my L48 and it ran awesome! I think the difference between the 4165 and the 4175 is the 4165 is a mech secondary double pumper while the 4175 is a vac secondary single pumper. Stepping on the gas looked like 4 shower heads inside the venturies, but there was never any hesitation. I'd be running it right now but I couldn't come up with a spread bore intake low enough to fit under the hood on the big block.
Drifting
Joined: Jan 2002
Posts: 1,645
Likes: 11
From: Schaumburg IL
Re: HOLLEY 4175.......GOOD OR BAD? (BB73Chris)
Ran one for a while. It ran smoother than a Q-Jet with zero hesitation, but did not have the oomph of the Q-Jet. After about 3 months it got sick and never was the same. Had two people screw around with it and ended up with a bookend.
