*********************************************************** Apply now for a No-Annual-Fee Discover® Platinum Card 0% Intro APR*, No Annual Fee, Up to 2% Cashback Bonus® award* Start Saving Today ? APPLY NOW! It's fast, easy and secure. caacf0Db7yoMza/ Discover Card *********************************************************** Neal, I am told you can reduce detonation with Aluminum heads. You can get up to a point higher. Altitude also plays into this as well. Higher altitudes can go a bit higher on compression and not ping. One of the guys local to here says at altitude of 5280 you can get 9.7 and not ping on 91 octane with iron heads. Gonna fire my 440 soon which is at 9.6:1. We'll see. On Wed, 19 May 2004 15:40:12 -0700, "Robert neal zimmerman" <northwestweirdo@xxxxxxxxxxx> said: > OK, this will probably open a can of worms, but here goes. > What is the key to making Horsepower with low compression? > I see over and over in magagzines something like > " We made 527 horsepower on pump swill and a hydraulic cam!" > or somesuch saying. > I am slowly working my way through my MP Big block engine book and > they caution anything over 9.0 to 1 for a dual purpose car is moving > towards flirting with detonation disaster. > Well there! I've said it. > Neal Zimmerman Eugene Oregon > Tom 65 Dart GT 'vert 68 Plymouth 'vert Longmont, CO -- http://www.fastmail.fm - IMAP accessible web-mail =========================================================== Graduate in less than 13 months with AIU?s Online virtual campus. Classrooms and student service as close as your computer. Highly accredited, study anytime ? anywhere. caaccM2b7yoMzf/ AIU =========================================================== ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. b7yoMz.