Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Hotrodding Basics> Compression Ratio for 74 ford 2.3 ?
User Name
lost password?   |   register now

Thread: Compression Ratio for 74 ford 2.3 ? Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
09-30-2012 05:08 PM
cal1320 My 1981 chilitons book lists the comperssion for a 1974 Pinto at 8.4 to 1.
BTW, when you mill the head on a Pinto engine, you need an adjustable cam sprocket to correct the cam timing after the head mill.
09-24-2012 07:56 AM
Originally Posted by Quarter Flash View Post
Thank you for that information. If anyone knows what ratio I am starting out with for sure it would also be helpful

actual vs "advertised" compression can vary quite a bit for older cars. just meausre your piston volume, deck clearance, gasket thickness, and head volume and calculate your own compression.

If you don't have a mic you can measure your volume above the piston by bringing it to TDC and sealing the edges with a thin layer of petroleum jelly. Use a common medical syringe to measure the volume- available at any corner drug store.

be sure to have it level and seal the top with either a hard plastic sheet or an old CD.

These are common cheap tricks that most of us use around here.
09-23-2012 08:16 PM
Quarter Flash Thank you for that information. If anyone knows what ratio I am starting out with for sure it would also be helpful

09-23-2012 04:30 PM
ap72 you can mill a LOT of that head- enough to allow for any compression that your heart desires. I'd bump it up to about 9.7:1, pick up a ranger "header" manifold, and put in a cam with about 225/225 duration. It's a great combo using all stock parts- except the cam.
09-23-2012 04:09 PM
Quarter Flash
Compression Ratio for 74 ford 2.3 ?

I am going to put a cam in a 74 Ford 2.3. I have heard the compression ratio is 8.5 but am not sure. Does anyone know for sure what the cr is on this engine? The engine is in a 28 A roadster pickup.


Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 08:10 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.