1. If you have recently registered with a gmail email address, you must contact me, as gmail will not forward our confirmation email to you. Contact me and jim@trishieldperformance.com to complete your registration.
    Dismiss Notice
  2. In and effort to reduce the spam on the site, several years ago I had went to a program where I manually approve each and every new registration. This approval gives you full access to the site, to pictures, and to post, among other things. To be able to enjoy the full potential of the board for you, you need to be fully registered.. and that's easy.. Just send an email to me at jim@trishieldperformance.com and I will verify your registration. This policy will remain in effect indefinitely, as it has completely eliminated the bad actors from our site, who would spam and hack it, once they gained access. Thanks JW
    Dismiss Notice
  3. The "Group Buy" for the 1967-68 Deluxe Steering wheel recasting is now officially "Open". Now is the time to start sending in the wheels. The latest date that the wheels must be received by Kochs is 31 March 2025 The cost for each wheel is $750. The only "up front cost" is your shipping the wheel. If you send in more than one wheel, each additional wheel will cost $700. Shipping and insurance to Kochs and return shipping will be extra. You will be contacted by Teresa to make payment for the wheel(s) and return shipping and insurance when your wheel(s) is complete. The shipping will be factored on your delivery address and insurance. I will be sending the contact information all of you have sent me to Teresa at Kochs. Send in your wheels, horn pad and hardware and paint color sample if applicable. Please include: First and Last Name Shipping Address Phone number email address V8Buick "Member Name" Wheel Color (SEE THE BOTTOM FOR WHEEL COLOR) Pease read the "shipping to Kochs" below. There are two addresses. One for USPS Mailing One for FedEx and UPS shipping You can use USPS/Mail, UPS or FedEx to send in your core. Use the appropriate address depending on what service you use to ship. If you use USPS/Mail ship to: Koch's P.O. Box 959 Acton, CA 93510 Attn: Teresa If you use UPS or FedEx ship to: Koch's 7650 Soledad Canyon Road Acton CA 93510 Attn: Teresa Kochs Contact: Teresa (661) 268-1341 customerservice@kochs.com Wheel Color If you wheel is Black, you can list that in your information you send in with your wheel. For colored wheels, please contact Teresa about specifics for wheel color if you do not send in a color sample to match. Please contact me if you have any questions. Thank you to everyone for your participation in making this a reality. And "Thank You" Jim Weise, for allowing and facilitating this project! Michael .................... to remove this notice, click the X in the upper RH corner of this message box
    Dismiss Notice

How Much to Mill Heads? 73 Heads on 71 Block?

Discussion in 'Small Block Tech' started by knucklebusted, Jan 29, 2022.

  1. knucklebusted

    knucklebusted Well-Known Member

    By may math, the DCR drops .25 with the 290 cam at 7.29DCR compared to the 212 cam 7.48DCR in the same configuration, straight up. Installing it 4° advanced (as most stock timing sets are built) raises it to 7.65DCR.

    Here's my spreadsheet if anyone wants to play with it.

    Auto Math Spreadsheet - Go to the Engine Info tab to see it.
     
    patwhac and Dano like this.
  2. nekkidhillbilly

    nekkidhillbilly jeffreyrigged youtube channel owner

    these gutless 4 bangers with a ton of gears dont really help around here. in my wifes equinox it was always staying in a lower gear. it got worse gas mpg than a v6 or v8. it also felt gutless and hunted for gears. they may do good in flat city land with no curves. mountains it was pretty terrible.
     
    knucklebusted and PGSS like this.
  3. knucklebusted

    knucklebusted Well-Known Member

    They hadn't started on the block yet so I upped the milling on the deck to .020 to improve my chances of getting to about 9:1 SCR.

    With a TA 212, that will yield the following: Shave heads .010, deck block .020, steel shim head gaskets, .030 pistons in bore and straight up cam install.

    Static compression ratio is 9:1, Dynamic compression ratio is 7.76:1
     
  4. nekkidhillbilly

    nekkidhillbilly jeffreyrigged youtube channel owner

    i dont want to take my block apart so im better to have my heads alone to .30 or so right
     
    knucklebusted likes this.
  5. knucklebusted

    knucklebusted Well-Known Member

    Taking .030 off the heads isn't as good as taking .030 off the block but it will definitely help. If you know the CC difference, we can plug it into the calculator to see where it winds up.
     
  6. nekkidhillbilly

    nekkidhillbilly jeffreyrigged youtube channel owner

    have no clue. im wanting to be right where you are on cr. i planned to get the heads to the machine shop back last summer and my wife lost her job due to covid and we have had seat back after seat back ever since and its winter on top of it now. she does have a good job now.
     
    knucklebusted likes this.

Share This Page