Recent content by Haulz A

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    800+ Wheel HP - What bottom end is needed that's reliable?

    Nice build for your engine project- but I think your gona need more turbo (7675 turbo) to accomplish 800 RWHP. A turbo that will produce approximately 130 cfm of air bc with a production style cylinder head your only gona extract about 75- 80 efficiency out of a turbo at best. With that being...
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    2023 THS Sponsors for GS Nationals/ Roll call- who's coming

    On behalf of the THS racers- we would like to thank all of our Sponsors that continues supporting the GS Nationals each year which creates a venue for the Buick community to celebrate our love/passion for racing/car show events and pass on the rich history of how it at started. Below is list...
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    GN1 Roller Rockers

    Timinator, I agree with you concerning things that reduce valve train lift- one of the most important things is the weight of the components used in your valve which will determine or limit the amount of safe engine RPM under high boost. Setting up the valve train geometry correctly plays a big...
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    GN1 Roller Rockers

    I've been running the Scorpion rockers 1.55 ratio with 195 -200 lbs spring seat pressure for over ten years on my GN1 aluminum heads without any problems. Like ek02 said in this thread- you have to make sure that you're installing them with the ARP 234-7202 professional stud kit and ensuring...
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    Autolite 104's fouled

    Brisk is an excellent plug for high horse power applications and great street driving as well. It really comes down to how well of a tune a car has @ idle, cruise , WOT and the type of fuel used which will directly determine the life of the spark plugs. I always install new set of plugs when...
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    Autolite 104's fouled

    Attached is an Autolite spark plug cross reference chart. Like Mr spool said in a earlier post- I would not run 104 plugs on GN1 aluminum head bc they are tapper plugs which should not be ran on GN1 or TA aluminum heads. Need a plug with a crush washer such as the NGK R567A- 7 to -11 or the...
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    Buick Bash June 15-17 2023 / Ohio

    A really top notch race facility- I raced there in June of 2020 the last time John Csordas hosted that Buick event. I'm planning on taking my GN to the event and race- the only thing I regret is the 12 hour tow to get there.
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    6466 Turbo Talk.

    Interesting, LMAO
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    6466 Turbo Talk.

    Its a THS legal three bolt 6766 bb (3X2) compressor cover, .85 AR turbine cover- I've broken three shafts on this precision turbo's. I really push it to the limit with my combo- it hits 2:1 back pressure by 29-30 psi of manifold boost pressure- plus about 2-4 psi pressure drop across the...
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    6466 Turbo Talk.

    I agree with you concerning pushing a small frame turbo really hard- I’ve broken three 6766 precision turbos shafts since 2015 - approximately one every 18 months or so- I switch to Works turbochargers which is a Garrett center cartridge design with Works turbine shaft and compressor blades-...
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    6466 Turbo Talk.

    The wheels have a curve design similar to the HPT Promod turbos they produce- just in a smaller frame size
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    6466 Turbo Talk.

    Mr Spool, I talked to Mike Licht about some of the same questions you have about the new turbo- his reply concerning the issues you brought up was- they are working on a 6766, 6768, or a 6770 turbo design as well which should be release soon. Concerning the compressor/turbine wheel- they are a...
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    6466 Turbo Talk.

    HPT turbo's are produced by a guy name Harry- he use to own Precision turbochargers awhile back then he sold it to the current owner. HPT is a leader in Outlaw Radial vs World, PDRA, NMCA and Promod turbocharger applications. Mike Licht @ Full throttle reached out to him and had them develop a...
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    Building a 7sec 87GN Drag-n-Drive car with V6 Stage 1 heads!

    Nice- I like the effort going forward to complete a frame restoration modification on a real GN race car.
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    Turbo upgrade.

    Brandnu6, To answer your two questions concerning an intercooler upgrade and requiring a blow off valve. 1. A SLIC such as Precision intercooler or a front mount intercooler upgrade would be very beneficial for either the 49 or 6262 turbo upgrade due to the less restrictive airflow and cooler...
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