Holley 4175 Rochester replacement in 68 472
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 2 of 2
500, 472, 425, 368 Discussion, Holley 4175 Rochester replacement in 68 472 in Cadillac Engine Technical Discussion; I'm getting kinda sick of all the badly-rebuilt Q-jets I've been getting from the major auto parts stores. I've received ...
  1. #1
    man1ey's Avatar
    man1ey is offline Cadillac Owners Member
    Automobile(s): 1968 Deville Convertible
    Join Date
    Aug 2005
    Posts
    19

    Holley 4175 Rochester replacement in 68 472

    I'm getting kinda sick of all the badly-rebuilt Q-jets I've been getting from the major auto parts stores. I've received them with missing parts, a badly bent float, incorrect fittings, you name it. I realize I have to tweak a new carb but I've bad a lot of trouble with those from Champion and Tomco.

    I'm thinking about trying the Holley 4175, which Holley bills as a 'quadrajet replacement'. I really want the ease-of-service I enjoyed with Holleys in the past, but never tried the 4175. Has anyone tried this carb?

    My big concerns are:
    1. Physical dimensions - it's gotta fit a stock 68 472 with AC and a stock intake.
    2. Dial-in - is it going to be tough to tune the carb once I get it installed?
    3. Choke - not going to be able to use the intake-mounted choke. Is it pretty easy to change to the electric?
    Mike

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    davesdeville's Avatar
    davesdeville is offline Banned
    Automobile(s): 1995 ETC, 75 Deville, Cad500 powered 73 Apollo, 94 Mark VIII
    Join Date
    Aug 2003
    Location
    Albuquerque, NM
    Age
    26
    Posts
    7,971

    Re: Holley 4175 Rochester replacement in 68 472

    Holleys are generally the easiest carbs to tune, no surprise they're very popular... It should be quite easy to switch to an electric choke.

    The physical fitment with the AC compressor might be an issue.

    All in all I'd just get a Quadrajet rebuilt by a good company. I know JET is a company that I've heard good things about, but you'd have to get opinions (and contact info for that matter) from other people first.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting