636 HP Z/28 Camaro Test Drive with John Hennessey 

Will you be my friend?

290mph i dont think so i think about 215

24/7 uncharted i wasnt talking about the z28

Mr Wafflez thanks

The LS7 is a detuned version of the C5r racing engine. Hennessey specs are very similar to the racing engine. Racing engine had more Tq then Hp unrestricted. The whole top end was upgraded in video. I'm not sure of his parts selection. Throttle body is probably 102mm up from 90mm. Intake manifold more then likely a Fast LSXR for better breathing. The cam upgrade alone brings power up to 570hp. Port and polish heads is like another 25hp.Long tube headers add some 30 hp more at the top end. A V6 is a little tougher to get gains like here in video. This LS7 pistons are so big the iron liners over lap each other. The block can be bored to 440ci up from 428.5. There is still some power to be had in the mid 750 in this LS7. A V6 is very limited in it's design. More power is very possible but such cost is probably not worth it.

Not to mention the Charger Hellcat... It does 204 mph STOCK.

Who cars that car is like a giant brick on wheels, to big, to heavy, can't corner, can't stop, oh and as far as reliability. .. yikes mopar garbage

Meant who cares not who cars...

depends on if they maxed out the engine or not. the z28 is a bone stock ls7 so there is PLENTY of room for upgrades. Who knows, it may be a PITA to upgrade the 'el Cat from what it makes out of production.

This LS7 has been worked over actually. Direct Injection has issues with the 7100rpm redline. Much of this 7L is new. The pistons,rods,and main bearings have been upgraded to race spec parts. Intake valves are now full titanium. I didn't know the heads were different. GM probably went less aggressive in heads for a flatter torque curve. Z06 heads were 12 degrees.

which is a very good thing

Yep all motor!