429 torquer rebuild

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds

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
Other Cadillac Engines Discussion, 429 torquer rebuild in Cadillac Engine Discussion; Im planning on rebuilding my 64's 429 and am trying to get just a bit more torque. I was wondering ...
  1. #1
    deathmachine is offline Cadillac Owners Member
    Automobile(s): 1964 eldorado
    Join Date
    Mar 2010
    san diego

    429 torquer rebuild

    Im planning on rebuilding my 64's 429 and am trying to get just a bit more torque. I was wondering if anyone knows if you can use a cam out of a 472 to accomplish this.

  2. Remove Advertisements

  3. #2
    ScottConklin's Avatar
    ScottConklin is offline Cadillac Owners Member
    Automobile(s): 64 Coupe Deville 78 Eldorado 85 Seville 94 Fleetwood
    Join Date
    May 2010

    Re: 429 torquer rebuild

    The 429 is it's own little world. Very little interchanges with anything else and nothing with the newer 472/500. You can get a cam custom ground, though. Porting the heads and port matching the intake and exhaust helps, as well. The biggest problem for these motors is they can't breathe and while there is only so much opening up you can do anything helps. There are no headers available but the car can have true duals mounted by a good shop(2.5 inch is as big as you can go). Flowmasters and a pair of resonators at the back sound good and the resonators help prevent fluctuation of PSI and that "tin can" effect, too.

    Also, the Quadrajet intake from the final year for these engines(67?) is a big improvment, both in carb choice and flow, over the 64 intake. By cutting out the base of the breather and welding in a newer QJ piece you can camouflage this rather well(and by opening up the backside of the breather you can increase the airflow without being obvious about it).

    Oh, it IS possible to put in bigger valves if you know a good machine guy. I found a write up about this once but lost it in a comp crash. Again, they just can't breathe so this *might* be a worthwhile mod.

  4. Remove Advertisements
    Cadillac Forums

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

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

Please enter a valid email address for yourself.

What Cadillac(s) do you own? (Or type NONE)

Please select your insurance company (Optional)

Your date of birth and age are displayed in several places on the forum. Only the administrator will have access to your date of birth should you choose to hide it via the privacy option below.


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.


Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts