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  • 11.1:1? Psh
    91+ octane on a LT1 will do 12.5:1 with a good tune.
    You've gone big on the cam, go big on compression 12.1:1
    Then you'll walk all over Joel.
    What who said that?
    Originally posted by Yoshi94
    Mines about an inch bigger than Kyles. I need to get one of those
    Originally posted by ryanwarby01
    Put it this way, if you have a money tree a LT1 is a wood chipper!
    sigpic

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    • Originally posted by Fox Slaughter View Post
      11.1:1? Psh
      91+ octane on a LT1 will do 12.5:1 with a good tune.
      You've gone big on the cam, go big on compression 12.1:1
      Then you'll walk all over Joel.
      What who said that?
      Haha i'm not really competitive i just like going fast and having fun. And Joels car will always be cooler to me. And the problem is the valve to piston clearance ill run into going that high with compression
      1999 z28 Bright Blue Metallic 1 of 10
      1999 z28 Hugger Orange RS 1 of >309 (Sold)
      1997 z28 White 6 speed Heads and Cam. (Sold)
      1994 z28 PPM auto Cam only (Sold)
      1984 sport coupe red 4 cyl (Sold)

      Comment


      • Piston to valve clearance?
        Psh, guys run higher compression with that with SR cams in the .7xx.
        You're just scared!
        SCAREDIE CAT!
        Originally posted by Yoshi94
        Mines about an inch bigger than Kyles. I need to get one of those
        Originally posted by ryanwarby01
        Put it this way, if you have a money tree a LT1 is a wood chipper!
        sigpic

        Comment


        • Originally posted by Fox Slaughter View Post
          Piston to valve clearance?
          Psh, guys run higher compression with that with SR cams in the .7xx.
          You're just scared!
          SCAREDIE CAT!
          Im just going off what my shop guy says lol but know you got me wanting to ask him about solid roller
          1999 z28 Bright Blue Metallic 1 of 10
          1999 z28 Hugger Orange RS 1 of >309 (Sold)
          1997 z28 White 6 speed Heads and Cam. (Sold)
          1994 z28 PPM auto Cam only (Sold)
          1984 sport coupe red 4 cyl (Sold)

          Comment


          • I would go big on compression before cam fwiw
            -Joel
            1995 Z28 M6 - AI226/234 - autocross ricer
            1984 Scottsdale K10 - 305/4bbl/4spd


            WTB List:Midwest Chasis DS Loop

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            • I am going to build the block laying in the garage as a SR because its only a Weekend Warrior/strip car now.
              So adjusting lash is no big deal.
              Originally posted by Yoshi94
              Mines about an inch bigger than Kyles. I need to get one of those
              Originally posted by ryanwarby01
              Put it this way, if you have a money tree a LT1 is a wood chipper!
              sigpic

              Comment


              • Originally posted by JoeliusZ28 View Post
                I would go big on compression before cam fwiw
                He said it will end up being 10.75:1 and that if we go 12.1:1 i would have to run 110 race gas. And i found out today that my stock crank is junk so the forged 3.75 crank and forged rods and pistons got ordered today there goes another couple grand lol
                1999 z28 Bright Blue Metallic 1 of 10
                1999 z28 Hugger Orange RS 1 of >309 (Sold)
                1997 z28 White 6 speed Heads and Cam. (Sold)
                1994 z28 PPM auto Cam only (Sold)
                1984 sport coupe red 4 cyl (Sold)

                Comment


                • not true, you can push 12:1 if not 12.5:1 out 93 octane on an EFI setup if the tune is dialed in precisely. I have 11.5:1 with no issues. You can get close to 11:1 just using impala gaskets.
                  -Joel
                  1995 Z28 M6 - AI226/234 - autocross ricer
                  1984 Scottsdale K10 - 305/4bbl/4spd


                  WTB List:Midwest Chasis DS Loop

                  Comment


                  • Originally posted by JoeliusZ28 View Post
                    not true, you can push 12:1 if not 12.5:1 out 93 octane on an EFI setup if the tune is dialed in precisely. I have 11.5:1 with no issues. You can get close to 11:1 just using impala gaskets.
                    That's what i thought! Maybe its different with other sbc's? Should i just tell him to build it to have at least 11.5:1? I mean i'm building a fully forged 383 with fully ported heads and that big voodoo cam. I Mean ill be honest i know higher compression helps but i don't know alot about it. Is it good if i wanted to spray eventually?
                    1999 z28 Bright Blue Metallic 1 of 10
                    1999 z28 Hugger Orange RS 1 of >309 (Sold)
                    1997 z28 White 6 speed Heads and Cam. (Sold)
                    1994 z28 PPM auto Cam only (Sold)
                    1984 sport coupe red 4 cyl (Sold)

                    Comment


                    • shouldnt hurt, youd just need a cooler plug.
                      -Joel
                      1995 Z28 M6 - AI226/234 - autocross ricer
                      1984 Scottsdale K10 - 305/4bbl/4spd


                      WTB List:Midwest Chasis DS Loop

                      Comment


                      • Originally posted by JoeliusZ28 View Post
                        shouldnt hurt, youd just need a cooler plug.
                        that was another thing i have been meaning to look into what is a good plug? I honestly always just pick up the best one from the parts store
                        1999 z28 Bright Blue Metallic 1 of 10
                        1999 z28 Hugger Orange RS 1 of >309 (Sold)
                        1997 z28 White 6 speed Heads and Cam. (Sold)
                        1994 z28 PPM auto Cam only (Sold)
                        1984 sport coupe red 4 cyl (Sold)

                        Comment


                        • Originally posted by Purple94Z28 View Post
                          that was another thing i have been meaning to look into what is a good plug? I honestly always just pick up the best one from the parts store
                          I believe there is a rule of thumb for determining the best plug to run, but I use TR6s in mine with the 11.5:1 compression and it likes those better than the stock plug which would compare to a TR55.
                          -Joel
                          1995 Z28 M6 - AI226/234 - autocross ricer
                          1984 Scottsdale K10 - 305/4bbl/4spd


                          WTB List:Midwest Chasis DS Loop

                          Comment


                          • I'm thinking so i dont go to crazy i will prob go with the same compression as you Joel and run tr6's. I don't want to go over 12 cause i dont want to run into tuning issues.
                            1999 z28 Bright Blue Metallic 1 of 10
                            1999 z28 Hugger Orange RS 1 of >309 (Sold)
                            1997 z28 White 6 speed Heads and Cam. (Sold)
                            1994 z28 PPM auto Cam only (Sold)
                            1984 sport coupe red 4 cyl (Sold)

                            Comment


                            • I think thats a good choice!
                              -Joel
                              1995 Z28 M6 - AI226/234 - autocross ricer
                              1984 Scottsdale K10 - 305/4bbl/4spd


                              WTB List:Midwest Chasis DS Loop

                              Comment


                              • Purple People Eater!!

                                Sounds like youre going down a good road! When I comes down to the time for my engine build ill be following Joel's setup VERY closely
                                1997 Trans Am
                                T56 swap. LS1 Cosmetics

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