The North Carolina region had a dyno day this past weekend and a new ACR with 1500 miles and Belanger headers and full exhaust pulled 582 rwhp on the dyno. Dynojet at Mayhem motorsports. 500 hp SRT 10 and coupe were pulling 433 and 432 for comparison.
Don't know where they came up with 62,000$ for the Z51, just picked up a brand new one with GM supplier for just over 41,000.
Don't quite understand why they use the 4.2 mile course instead of the 3.7 mile course.
The big cube cars would really stretch their legs on the shorter course !
My wife's mercedes was dying when she was driving it and the crank spark trigger sensor (or whatever it's called) was bad. Would be right back to normal when the car cooled off.
You also might want to check that your plug wires have not lost conductivity due to heat.
I agree, stop by UGR and you will be convinced. Proven package with a warranty. I believe Heffner has moved on to Ford GT's and Lambos and he installs UGR kits on Vipers?
"But now we know what Mercedes was really up to: they just wanted to get their hands on Dodge's Viper technology for their own use, and then they sold the company ..."
You are kidding right....
Are the shaft mounted rockers stock from the factory? Looks like they really unshrouded the valves, opened up the "d" shaped exhaust ports, and went to a more rectangular vs oval type intake port. Could still go with an offset rocker arm to get the pushrod restriction out of the intake port...
Welcome to the stock cylinder head 273cfm intake and weak cam. Get yourself a set of stryker or ported heads and a decent cam and you should see 40 to 50 more hp. Come to think of it the dang exhaust ports stink also.
Heres the link to the UAW contract as posted over in the corvette forums. Looks like more than just Conner could be closing. The link opens a pdf file which you need to scroll way down to see plant commitments.
http://forums.corvetteforum.com/showthread.php?t=1839433
Underground Racing in Charlotte. Get his number off the website but call him for your needs. Kevin currently has over 20 vipers in his shop getting mods.
I would also add- The driver should have a pair of cotton coveralls on and remove all jewelry. Also If he is bigger than your car he is going to run into problems exiting the vehicle. Had a driver show up wearing a big Belt buckle to load my Ferrari 512bbi, bent the window frame as he...
Stryker heads sold through http://www.jmcylinderheads.com
and I believe they are very expensive @7000$
Other alternatives
Louthan cylinder head porting.
Port Pros cylinder head porting.
I agree that with only a 20% improvement in airflow (per article) the heads and manifold alone will only make 40-50hp. However I wouldn't go to all the work changing heads without slapping in a new camshaft. There are plenty of camshaft grinders out there that can make big power. And any...
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