1971 GTO 455 at idle

New Summit dual Exhaust with Flowtec Headers on 455 Pontiac. Crane Max Velocity HIT284281 cam (234/242 @ .050" / .488 & .505 Lift), mild porting, Holly Street Dominator intake w. 870 Holley Avenger. 4 speed converted to TH400. Need to disconnect the backup lights!

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1970 GTO 455 ho.





Camaro Z28 messing with 455 GTO on the street
Late-Model Camaro Z28 with bolt-ons messing with a classic 455 swapped GTO. The GTO jams it and then one of the passengers thought they were being tailed by an unmarked B4C (special service police) Camaro holding a radar gun (video camera, lol) notice the nervous and unsure look on his face as we roll beside, then his complete and total relief once he recognized a couple old pals in just a regular Camaro, lol. (This Camaro made 280hp at the wheels and ran 13.1 at Mason Dixon Dragstrip) This footage was shot way back, many years ago, with an old junky analog camera, so apologize for the poor video quality. Produced by nedaCFilms / Mustang-Town.com & V8ponycars.com





81 Firebird Trans-Am, 455 cammed with glasspacks
THIS IS VERY LOUD. make sure your locals wont pull you over for having loud Exhaust. This is the last video before the new paint, its my daily driver but getting put away for winter after the new paint gets put on. It has a... 455, with a mild aggressive cam, bored 30, long tube headers, true dual 12in glasspacks, 2 1/4in pipes with chrome tips,





PONTIAC GTO Judge (1971 455cid, the differences basic supertuning can make)
Those who know me well, know that I always beat "SUPERTUNING" "SUPERTUNING" "SUPERTUNING" into the ground. This video shows the difference minor tuning can do (This is minor because a 1971 GTO's fuel/ign calibrations are already geared for performance, so there's not as much improvement you can make like you'd be able to on say - a late 70s smogger). But on larger scales, HUGE differences can be made, as much difference as adding performance parts alone. The more the car is severely out of tune/adjust------which happens more with the more mods you make, then the more you'll gain by supertuning it. There's another vid on YT where an Olds 455 was built with performance parts to be totally streetable but achieve 1hp per cubic inch. After they got the recipe of perfect parts all together they were disappointed when she only Dynoed at 320hp. But luckily they did not give up! After the proper ign-curve/timing & carb adjusts were made, the engine jumped from 320 up to 455hp!! No doubt all the new cam/intake/head mods put the old fuel/spark adjustments badly out of calibration for the NEW BREATHING ABILITY. Also with things like dual quads (especially to engines not originally equipped wit them), your adjustments are most likely going to be way off and need calibration even more. There's lots of dual quad cars out there not running well for this reason, however the few that have been calibrated perfectly (EVERY adjustment set for the best "stop watch" time, etc) truly do run like a bat out of hell!




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