Those Spring Kits would be a a launching pad to THOUSANDS of performance additions to the BTR Shelves. He worked at Holley Performance products from 1993-1995 where he helped develop the SysteMax head, intake and camshaft packages.He went back to work for himself from 1996-2004 where he built Total Engine Airflow into one of the most successful CNC cylinder head porting shops in the country.At the end of 2004 he sold his business to Summit Racing Equipment where he worked with Trickflow Specialties developing CNC programs for existing heads, as well as developing all new cylinder heads.He left Summit Racing/TFS during 2010 to move closer to home and family.After seeing a need for quality spring kits at affordable prices he decided to introduce his own line of spring kits. SUMMIT RACING PORTING KIT FULLAfter adding race fuel and dropping the ignition timing back 6 degrees, we were rewarded with a whopping 736 hp and 691 lb-ft of torque.Brian Tooley has worked in the performance industry full time for over 20 years. He started his own business, Total Engine Airflow, in 1992 using a Flowdata flowbench. We made sure to optimize the bottle pressure by heating it prior to hitting the button in anger. Adding the 150hp shot of nitrous from the NOS Sniper kit actually improved the power output by as much as 170 hp (not uncommon when properly tuned). I guess the new rings and head milling were money well spent. We took extra precautions to properly break in the hydraulic flat-tappet cam from Summit Racing, but this was even more power than we expected from something just snatched from the local wrecking yard. SUMMIT RACING PORTING KIT PROThe Pro Comp single-plane intake worked well to optimize peak power and our used Holley carb and HEI distributor both performed flawlessly. Credit the flow rate of the excellent Pro Comp aluminum cylinder heads and extra work performed by Dr. The budget 454 not only managed to exceed 500 hp, but did so in spectacular fashion with peak numbers of 565 hp at 5,900 rpm and 532 lb-ft of torque at 5,400 rpm. Running wilder cam timing (like the Comp XE284H or larger) would require use of the Isky valve-notching tool to add the necessary clearance. This meant the Summit grind (0.540 lift, 238/248 duration) would easily fit. The smaller XE274H (flat-tappet) cam fit with a minimum P-to-V clearance of 0.115, while the larger XE284H cam snuck by with 0.065. We tested P-to-V with a pair of Comp cams, one larger and one smaller than the cam we planned on purchasing from Summit. Since we did not have access to the Summit cam we planned to order for this build up, we did the next best thing. Knowing we needed a healthy cam to reach our goal of 500 hp with the low-compression 454, we mocked-up a pair of cams using the Pro Comp heads and factory pistons prior to assembling the motor. The low-compression, dish-top pistons featured valve reliefs designed for the 2.06/1.72 valve combination used on the factory (iron) peanut-port heads, not the larger 2.25/1.88 valve package in our Pro Comp heads. The factory pistons presented another problem in the form of piston-to-valve clearance. At FXR Factory Racing Inc racing is the ultimate test of man and machine, pushing the limits of your equipment to its boundaries, pushing your body both mentally and physically past its limits.
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