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  1. #121
    Killa Bee Scottydoggs's Avatar
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    Default Re: My Baby - 2000 Silver Mist GTP :) lots of pics!

    all i know is if you gonna break it, really break it. you pulled that off good.

    to me it seems like the valve failed and bent and locked up. cam pushed the push rod up and its travel was stopped from the bent valve and snapped the push rod.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 3.0, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned by me. https://goo.gl/gpV5kW

  2. #122
    Donating Users coolone's Avatar
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    Default Re: My Baby - 2000 Silver Mist GTP :) lots of pics!

    Ok, so brought my head to machine shop to look at the valve guide, he didn't like the valves, seems they were a little galled, oil starved or the fuel dump washed the oil from them. The valve definitely got stuck, but the keepers were intact. Now I'm thinking to replace all the valves, so other than ZZP, where from? I checked Comp Cams and couldn't find the stock valves there, or can I call them? Let me know... Would like the Manley HD type valves but not sure they make them in stock. Intense has HD type, but for larger valves and I'm recutting the seats, stock is fine by me.

    Last thoughts... I now have YT RR's in both 1.8 and 1.9, so... Who here has run, or is aware of running the 1.8 intake, 1.9 Exhaust? With the Overkill BBC cam, the exhaust would then be .6023... I have PAC-105's and a double roller timing chain. Heads are STGII for .600 lift. So then is +.0023 an issue? Lol... I could just do the clay check when assembling the heads to be sure, but thought I'd just ask.

    thanks for listening : )

  3. #123
    Donating Users coolone's Avatar
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    Default Re: My Baby - 2000 Silver Mist GTP :) lots of pics!

    3/8" Push rods fit these engines/heads?

    also, #130 springs needed for +.570 or .600 lift? OverKill's BBC cam has agressive ramp rates, so thinking to bump springs up to #130's. Got some feedback to upgrade PR's as the stock YT's aren't made to handle heavier springs...

    thanks for for your thoughts.

  4. #124
    Donating Users coolone's Avatar
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    Default Re: My Baby - 2000 Silver Mist GTP :) lots of pics!

    Quote Originally Posted by Scottydoggs View Post
    all i know is if you gonna break it, really break it. you pulled that off good.

    to me it seems like the valve failed and bent and locked up. cam pushed the push rod up and its travel was stopped from the bent valve and snapped the push rod.
    Yeah, think so... From what I could see close up, it looks like oil starvation, so not sure the 2nd time I pulled the front cover, it was pumping oil valve could've been sticking before as well and would explain my major vac leak.

    anyways...

    After checking specs on numerous pages and vendor product data, I've come to the conclusion the #105 springs are fine for the lift I'm going to run. Is annoying anymore to fish and dig to find information, lol. But is all good... Ordered better pushrods, Intense .83x7.30 to replace the stock YT on the RR's, leaving the Pac Spings, order all new valves too, just didn't like how a few felt, so what the hell at this point. Keeping the double roller so if I do decide to go #130's it's already set.

    I was really considering putting stock rockers back... But no... Go BIG or go home right?

    Interestingly, I couldn't remove the oil pump cover from the front cover, had to drill out the screws, what a PITA. And really, after measuring it all, it's the gaskets that clear the chain to cover, so I think the one I have is home made. My buddy has the right equipment, so I'll take a .010 off the cover too to be safe. Or just run double gasket, lol.

    Getting the itch to get it together and on the road again... I miss my GTP.

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