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  1. J

    spark plug advice

    I have a 5.7 with a set of dart iron eagle s.s. heads. Dart specs have listed a autolite r13 which is a racing plug non res type. Can anyone give some advice of a plug that I can use other than this. Thanks
  2. J

    carb advice

    i have a 300hp 5.7 that it i am looking at installing a holley on. would a 750 be too much or should i stay with a 600/650. Thanks
  3. J

    marine carb

    Can I install a set of j tubes on my 670 Holley and make it safe to use on my boat, or is there something I am missing. Thanks
  4. J

    cobra gear ratio

    I need to replace the drive on my 1989 21' four winns. The boat came with a 5.0 cobra. I replaced the motor with a 5.7. The drive is need of repair. I know that the ratio is different between the1989 5.0 (21/18) and the 5.7(21/17 before 1989 and 24/29 after) Should I look for a 5.7 cobra or...
  5. J

    prop or other issues

    I have a 1989 205 sundowner that came with a 5.0 cobra and a S.S. prop 14 1/4 x 22. The motor was damaged so I replaced it with a new 300 hp carb 5.7. 4bl 670 holly (new)The motor came with a cobra drive marked 5.0 and a prop marked 15 x 7 HH 517 13. I put the boat in the water and it took a...
  6. J

    omc drive ratio issue ?

    I replaced my 5.0 ford with a 5.7 engine 310 hp. I see that the ratios are different on the drive. 5.0 ford having 18t and the 5.7 16t. Will this be of any issue?
  7. J

    engine alignment issue

    I have a omc 5.7 I installed in my boat. I used the tool for the alignment. I thought I was finished with that part until I turned the motor. The tool would not slide in. I turned the motor until the tool would go in and marked the pulley. I turned the motor 1/4 turn and the tool would not go...
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