Your Classic Car Community and Marketplace
Register | MyOldRide Account | OldRide Store | Support | Site Map   
OldRide HomeClassic Cars and Trucks For SaleClassic Car and Truck Parts For SaleSell on OldRideOldRide AnswersRusty RidesCar Show ListingsCar Club ListingsResearch Library  
OldRide Answers Home
Using OldRide Answers
Ask a Question
Browse Questions In:
Other Makes
Classic Trucks
 General Topics
General Questions
Help Identify
Classic Car News
General Restoration
Vehicle Maintenance
Site Suggestions & Comments


Ask a Question in OldRide Answers
Help Enrich the Classic Car Community
Explore Closed Questions and Answers
 Search Questions: 
390 build. How can i up the compression on a standard bore 390 gt block without new pistons?
I am building a 67 390 gt motor. Do not have the funds to stroke and go all out. Is there a way to up the compressiom
to get more power out of what i have. Will be running a 427 2x4 intake, want to make sure the 390 can burn the gas.
posted: November 18, 2008
  Answers (2)
Have .020"- .025" shaved off of the heads, That might not sound like much ,but it will be better than doing nothing and cost is not that much.
You may want to contact one of the speed catalogs,and see what head gasket thickness' are available,you can go with a thinner gasket than original save some $$ instead of having the heads milled.

Just make sure you use a good machine shop !!

Good luck on your project.
posted:  November 19, 2008
Click to close this picture
make sure you have enough cam for carbs being used and a good ignition system 390s don't rev high to get tourqe so ignition and cam timing can make big difference as well as having right trans and rear end. with out doing all the right things even higher compression wont help i have done several 390s and they are good engines even still have pistons and other parts on shelf
posted:  December 22, 2008
Click to close this picture

Home | Classifieds: Vehicles / Parts | Sell on OldRide | Rusty Rides | OldRide Answers | Events | Clubs

Library | Car & Truck Resources | MyOldRide Account | Support | OldRide Banners | Car Photos

Copyright © 2017 Internet Brands, Inc. All rights reserved | OldRide Support | Terms of Use | Classifieds Disclaimer | Privacy Policy | Cookies