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  • #31
    Originally posted by LSX121 View Post
    Precision dont make this turbo anymore 98/88

    rules should be

    76mm,80mm,or 88mm at a certain weight and that is it. no billet wheels

    Thanks JMO John Sheffield
    Precision said if the interest is there, they will do a small production run for an 88/98mm turbo...
    2004 Cobra
    www.boostedgt.com
    www.teamzmotorsports.net

    Comment


    • #32
      I'd recommend a 50lb increase on the 88/98... I see that combination getting out of hand pretty fast. Also, 50lb reduction for the gt47. You have 100lbs separating the two turbos and there is a night and day difference between the two. Also, allow the Ultra Street 80mm turbo. Those are running right around the ET range you're looking for... But the Ultra street turbos are based off a GT-55 so I think you got that covered in the 80mm rule. Just my two cents.
      2004 Cobra
      www.boostedgt.com
      www.teamzmotorsports.net

      Comment


      • #33
        ^ agree. Keep rules close to ultra. Guys are dipping into the 4s already with the 80mm.
        One day at a time.

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        • #34
          Just talked to Grant Precision Turbo and they don't make the 98/88 and won't build me one out of my 106.
          Guys if y'all don't think John Sheffield is run 4.80s or better on a 40 pill your crazzzy
          Just my 2 cents
          http/www.texasturboboys.com

          Comment


          • #35
            Originally posted by WTS View Post
            Just talked to Grant Precision Turbo and they don't make the 98/88 and won't build me one out of my 106.
            Guys if y'all don't think John Sheffield is run 4.80s or better on a 40 pill your crazzzy
            Just my 2 cents
            Maybe you missed my post... Precision will do a limited build of the 88/98's if the interest is there. Don't believe me? Call Precision, ask for Justin. Talk to him.
            2004 Cobra
            www.boostedgt.com
            www.teamzmotorsports.net

            Comment


            • #36
              Originally posted by WTS View Post
              Just talked to Grant Precision Turbo and they don't make the 98/88 and won't build me one out of my 106.
              Guys if y'all don't think John Sheffield is run 4.80s or better on a 40 pill your crazzzy
              Just my 2 cents
              I got 1 but if a turbo car is fast in that class it will only get to run 1 time. John has head hunter heads derrick said those heads are not legal for the class.

              Comment


              • #37
                Originally posted by 1fastvipper View Post
                I got 1 but if a turbo car is fast in that class it will only get to run 1 time. John has head hunter heads derrick said those heads are not legal for the class.
                Where does it say they aren't legal?

                Big Block Chevy Cylinder Head:
                Conventional Heads as referenced to the original Mark IV design. (BBC symmetrical or raised port design is not defined as conventional for these rules)
                * Stock port location/Standard port location – no raised runner
                * Floor of port may not be more than .550 from deck
                * No port plates or intake manifold adapter plates permitted
                * No epoxy or welding permitted except for repair in chambers or between cylinders
                * No welding of tops of runners except for adding bolt bosses for rocker stands
                * Intake valve angle will measure 24* + or – 1*
                * Maximum dimension allowable from deck surface to the top of the intake port will be no more than 3.125”
                * Heads with “AS CAST” intake port lower than this dimension will be permitted.
                * No welding or epoxy permitted to achieve this dimension.
                * Tech official has final say at the time of inspection on any issues that may arise

                Suggested castings to include the following:
                * Billet heads not allowed
                 CFE/BMF 350 – 405cc Big Block Chevrolet
                 Chevrolet Factory OEM Iron & Aluminum; OEM Aluminum
                Brodix BB-1, BB-1 OEF1, BB-2, BB-2X, BB-2 Extra, BB-2 Plus, BB-3, BB-3X, SR23 (non-raised runner Head Hunter)  Edelbrock Victor & Victor CNC, Edelbrock Victor Jr. CNC Oval & Rect
                 Edelbrock Performer RPM 454-O, 454-O, 454-R
                 Edelbrock Victor 24-degree Rectangular Port #77419, #77409
                 Edelbrock RPM XT Rectangle PN#51539
                 Edelbrock RPM XT Oval PN#51459
                 Edelbrock Victor PN#61409
                 Edelbrock Victor PN#61419
                 Edelbrock Victor PN#77609
                 Pro – Filer Sniper and SniperX 290 cc 320 cc and 375
                 Dart Pro 1 310 cc thru 355 cc, Race Series 265 cc thru 360 cc, Dart 380 Pro2
                 Canfield Big Block Chevy 24.5-800, 24.5-900
                 GMPP Signature Series BB Heads cast # 12363401, 12363391
                 Air Flow Research 265, 290, 305, 315, 335, 345, 357, 385, Oval, Rect & CNC Port
                 World Products Merlin II Oval & Rect. Port 269, 320, 345, 305, 350 Iron & Alum
                 (RHS) Pro Top Line Pro Thunder 320, 360 cc Alum & Iron
                Last edited by prospec1; 11-12-2013, 05:24 PM.
                sigpic

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                • #38
                  Derrick said no raised runner. X275 rules say no raised runner head hunter heads.

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                  • #39
                    Originally posted by 1fastvipper View Post
                    Derrick said no raised runner. X275 rules say no raised runner head hunter heads.
                    Our heads aren't raised runner Mike.
                    sigpic

                    Comment


                    • #40
                      Originally posted by BoostedGT View Post
                      Maybe you missed my post... Precision will do a limited build of the 88/98's if the interest is there. Don't believe me? Call Precision, ask for Justin. Talk to him.
                      I'll try and call them back tomorrow
                      http/www.texasturboboys.com

                      Comment


                      • #41
                        Originally posted by prospec1 View Post
                        Our heads aren't raised runner Mike.
                        That's great I thought all head hunters were

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                        • #42
                          I just hope my old turbo keeps up

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                          • #43
                            Originally posted by 1fastvipper View Post
                            I just hope my old turbo keeps up
                            Should be fun.
                            sigpic

                            Comment


                            • #44
                              Originally posted by BoostedGT View Post
                              Also, allow the Ultra Street 80mm turbo. .
                              What is an Ultra Street turbo? Precision? Borg Warner?

                              I thought it was an 80mm period?

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                              • #45
                                Originally posted by 1fastvipper View Post
                                I just hope my old turbo keeps up
                                Your turbo isn't legal for the limited class.

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