New heads -- same cam.
"The 2014 SRT Viper GTS Venom 700R by Hennessey Performance features new high-flow cylinder heads, stainless steel long tube headers, high-flow catalytic converts, stainless steel 3-inch exhaust system and a K&N air filter. Thanks to these engine modifications, the Viper GTS Venom 700R by Hennessey now delivers 705 hp at 6,400 rpm and 695 lb-ft of torque at 4,400 rpm.
As a result of this extra power and torque, Hennessey Performance claims the Viper GTS Venom 700R can sprint to 60 mph in just 3.1 seconds, complete the quarter mile in 10.7 seconds at 134 mph before topping out at an impressive 216 mph."
http://www.gtspirit.com/2014/01/24/o...y-performance/
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