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    Gen 3 5 axis CNC heads in production. Pics inside.

    With 3.73 gears, the car made over 620 rwhp. I forget what it made stock. Dyno numbers do not always tell the whole story. Two cars can dyno the same but one can be hands down faster. That's what we're looking for in a "combination". Those heads have a larger intake valve.
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    Gen 3 5 axis CNC heads in production. Pics inside.

    Here the link to a thread where a set of my Gen 4 heads ran a 10.56. http://forums.viperclub.org/threads/656932-Greg-Good-does-it-again-10.566-135.8-GEN-4
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    Gen 3 5 axis CNC heads in production. Pics inside.

    After the Gen 4 program is running, which will be in a about a week, the Gen 2 program is next. The Gen 2 castings have a lot of core shift from one set to another, so....I'm having to do a *safe* port that will not make even a shifted set of heads too thin. That will hurt some flow, but...
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    Gen 3 5 axis CNC heads in production. Pics inside.

    I spent a LOT of time on a Gen 4 port to make it perfect. It's already digitized.
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    Gen 3 5 axis CNC heads in production. Pics inside.

    This is the same port as on Andres Gen 3 car* that makes 643 rwhp and ran 195 at the Texas Mile. The CNC port won't be any better, it will just be easier to get more of them done. We ran 6 sets on this first run and 3 are available. Gen 4 heads and Gen 2's will be along shortly. (It's been a...
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    Gen 3 5 axis CNC heads in production. Pics inside.

    Polished out.
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    Gen 3 5 axis CNC heads in production. Pics inside.

    As the head comes off the CNC machine.
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    1/2 Mile Shootout: 165+mph all motor...Viper spins out !!!!!

    Cool vid! Congrats on the N/A win. Cant' believe the rods are still where they're supposed to be. One good shortblock from Dodge.
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    Viper Engine build, lots of questions, help needed please

    It's smart to to only go .010" over (by honing). The stock sleeves are thin enough already. Anything gained in cubic inches when going as big as possible is lost on ring seal because the cylinders flex more.
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    Greg Good Head Cylinders

    Diamond Head, my shop is full. You must have went to the wrong place. There's barely room to walk in here. I'm working part time at a trade school that has a CNC machine and we are almost set up to CNC all of my heads. We had to modify the 4th and 5th axis table on the machine and make a 5...
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    Greg Good does it again [email protected] GEN 4

    140 or kick all the rods out the side???? Just kidding. :D
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    Greg Good does it again [email protected] GEN 4

    140 in the quarter.... or bust.
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    Greg Good does it again [email protected] GEN 4

    @ Dan. Got lucky. :D Nice build in that other thread. Congrats on it. I watched the thread as it progressed.
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    Greg Good does it again [email protected] GEN 4

    You're such an attention whore Dan.
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    Texas Mile: 195.0+ All motor

    Awesome work Andres. Thanks for letting me do the heads on this build. It looks like with a little tweaking on gears and tire you're in the 200 Mile Per Hour Club. Pretty good for no power adder and a factory shortblock.
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    Finally got to the drag strip last night. Cold out! Thanks mr good:)

    Glad you had a good outing. I'd say you have a 10 second car if it went 11.1 with a 1.99 60 ft.
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    Greg Good does it again [email protected] GEN 4

    I wouldn't worry too much about the dyno numbers with 135.8 mph. Some combinations run a lot better at the track than they dyno. Those are the builds I like. The asphalt dyno is what counts.
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    Greg Good does it again [email protected] GEN 4

    Yes Sir. Big intake valves and concentrated on mid lift flow since we don't have much lift. A CNC shop will be porting these for me soon. They're making the fixtures to hold Viper heads. Can't wait.
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    Mobil 1 oil filter vs Mopar Viper spec

    The reason for filter housings failing at the crimp has been posted in other threads, and is worth re-posting here. Todd at Arrow Racing Engines told me that they have measured cold start oil pressure on Viper engines at slightly over 300 PSI. It doesn't stay there long enough to register on...
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    replaced roller lifters with dc lifters still have a barking noise after warmed up??

    Re: replaced roller lifters with dc lifters still have a barking noise after warmed u I don't know. I'm trying to reason out what in an engine could make that sound. We know it's not an accessory. The lifters can handle your spring pressure no problem. Maybe throw out bearing since you mention...
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    Greg Good heads & cam build - gained 189 rwhp

    Your headers work pretty good too. :1up:
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    Greg Good heads & cam build - gained 189 rwhp

    Aw man, that car sounds sweet in the second vid. :D
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    Greg Good heads & cam build - gained 189 rwhp

    Haven't bought the crank yet. Probably in the 530 inch range. About 11:1. Cam is bought. Nice solid roller, still a streetable one though. Lots more intake port flow. It will have a 2.100" intake valve, compared to the 2.02" valve we're limited to with stock pistons.
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    Greg Good heads & cam build - gained 189 rwhp

    Want to hit 700 with Gen 3 heads first. It will do it. Then I'll put my Gen 3 program to rest and start on the Gen 4 R&D.
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    Greg Good heads & cam build - gained 189 rwhp

    Ha Ha, that's funny. ViperTony likes to scare little old ladies sitting inside their house with his car. His is so loud he nick-named it Armagedon. LOL.

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