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k HEADS - MANIFOLDS - SERVICES - SHIPPING - SUPPLIERS - FEEDBACK - TESTING - EQUIPMENT - TESTIMONIALS Testimonials II wanted to write you this letter thanking you for your knowledge and talents of cylinder head porting. For the first time we ran two cars in one season, both with your cylinder heads on them. The first was a car that belongs to Darrell Walden that we ran in the Southwest Junior Fuel Association, which was required to use a non raised runner iron cylinder head. Your fresh approach to this real handicap was very instrumental in dominating this year. Your ideas turned a real crap head into something that we could actually make some power with. We managed to lower the E.T. record by two tenths and lots of MPH over the course of the year. The second car was my own A/ND of which we struggled with most of the year, not your fault at all, we were lost in the camshaft department. But, by the last two races we had it figured out and ran a world best of a 6.77 at 197. It would have been a new national record, but in Competition Eliminator, you cannot set records at National Events, as we ran this at the Finals in Pomona. We had opportunity to set the record in Georgia two weeks before, but had no appropriate torque converters for the awesome power your heads made. Thanks again for your fresh ideas and great work. Scott Parks, Neil and Parks Racing Your heads made us the power to dominate all year even though it was a new car, new engine, and a whole new team. We qualified #1 at 5 of 6 events, won 3 of 6 races, won the championship before the last race was even held, and reset the records twice. We ended up running a 7.27 at 185 at the last race, which was a team best and their new current records. Scott Parks/Darell Walden, SWJF Champion The number 53 open wheel modified car of Mike Duncan set the fast time for the year with a SBF engine using the v3.10FCV head. He went on later that night to win the feature. Time was recorded with a transponder at Princeton Motor Speedway, Princeton WV. It is a 4/10 mile, low banked track, 17.221 Jimmy Johnson, JAE Racing Engines I bought a set of Pro-Filer v2.50/23º about two years ago. On the dyno, it showed 720 hp. Well I always though it was optimistic and the motor was more in the range of 650hp. Well fast forward 2 years. The motor combination is pretty much unchanged from when it was dyno, but I have been working hard dialing in the converter and chassis. Well its finally paid off. My 3200 nova went 6.15@110 mph this weekend. Granted it was the best air I have seen in this area, you run the numbers though the calcs and they are in the 700 horsepower range. I consider my build to be pretty mild in terms of camshaft and compression. Built with longevity and low maintenance in mind. I don't think I have reach the limitation of these heads either. I hope my results will show the potential of these heads. I don't think 750 horsepower and 5.9xs are out of reach. Thanks Chad for an awesome head, I still think there is more potential in there. Bill Simpkins (banjo) Car: 1978 Corvette Specs: 434sbc, 10.5:1 compression, Nitrous Oxide, FAST fuel injection, Compcams valvetrain and camshaft, TCI Powerglide, 275 Drag Radial, RHS 235cc heads ported by Chad Speier. Weight: 3080lbs with me, race ready. Performance: 1/8th mile 5.40 @ 131.5 mph with 1.25 60ft on nitrous. 1/8th mile 6.40 @107 mph with a 1.50 60 ft. Car is set up for nitrous. This is truly a street strip car. I drive it to work and cruise around quite a bit. It runs on 93 octane pump gas and doesn’t overheat. I also race it in the Mean Street class all over the Midsouth area monthly and sometimes twice a month. On nitrous, the motor should be making about 1050hp and this is definitely due in no small part to the cylinder head work done by Chad Speier. That motor capped out with the heads in stock form. After sending them to Chad for porting, the motor would accept more nitrous and made more power even on motor without any other real changes. Chad also told me I would be able to upgrade to 3/8” pushrods with only offset intake rocker arms. This was free good info. After this season’s final race I will be upgrading to the new 2.72 CNC head that Chad has designed for even more performance. He sent me one of the heads to sample and flow and it was exactly what he advertised and a seriously quality piece. I don’t know of any cylinder head shop that will do that! Ron Turnbaugh, FAST/Comp Cams I tested my 15 deg. heads with a ~1/2" clay entry and then with the E-brock 2959 with Dominator adapter you did for me. Flow numbers below .600" lift were nearly identical to the head only numbers. At .700" it was down 9 cfm and at .800" lift and above was down 10 cfm compared to head only numbers. <3% loss. Pretty darn good for not having heads and spending a bunch of time in development and especially for the price! Jason Gore
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