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CNC stealths


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vucelick

Fri Mar 03 2017, 10:06PM

Registered Member #2057

Joined: Sat Apr 04 2009, 10:33PM
Location: washington
Posts: 163

Pulled the motor today and shipped off the stock stealths to Modern cylinder head for one of their CNC jobs. Hoping to shave 8 tenths off my 12.80 from last year.

496 polara

Sat Mar 04 2017, 08:33AM

Registered Member #321

Joined: Mon Feb 27 2006, 09:12AM
Location: Angier,North Carolina
Posts: 382

Don't know about .8 but you will pick up.Have them check the guides while they have them.

vucelick

Sat Mar 04 2017, 09:16AM

Registered Member #2057

Joined: Sat Apr 04 2009, 10:33PM
Location: washington
Posts: 163

I figure I need 80 horse according to my old rule of thumb (10 horse per tenth) . The guys at modern says they see 70 horse improvements on a mild 440 for their CNC job. I will know for sure come april when my local drag strip opens. If nothing else it will be a good data point for people considering CNC'ing their heads. If the heads dont make it go 11.99, I can add a little more cam later.

[ Edited Sat Mar 04 2017, 09:19AM ]

vucelick

Thu Mar 23 2017, 11:30PM

Registered Member #2057

Joined: Sat Apr 04 2009, 10:33PM
Location: washington
Posts: 163

Got the heads back form modern cylinder head, cnc'd they flow 319 cfm @ 600 lift

[ Edited Thu Mar 23 2017, 11:30PM ]

ThisGuy

Sun Feb 25 2018, 08:05AM

Registered Member #6947

Joined: Sun Feb 25 2018, 05:12AM
Location: Nevada
Posts: 1

Shave any time off?

Sun Feb 25 2018, 12:45PM

Registered Member #1566

Joined: Wed May 21 2008, 02:52PM
Location: Machine Shop Hell, IL
Posts: 142

X2: Mid 12s is COOKIN' - what happened to this build?

vucelick

Sun Feb 25 2018, 03:07PM

Registered Member #2057

Joined: Sat Apr 04 2009, 10:33PM
Location: washington
Posts: 163

Went 12.63 with the cnc stealths with no tuning.

Late last summer the comp cams hydraulic roller lifters link bar pin failed while i was driving to a local car show.

http://cbodydrydock.com/e107_plugins/forum/forum_viewtopic.php?188430

i ordered a custom cam from straub technologies, should be here in a few weeks. Then I can get to the track this spring and finally tune the car and see what the cnc stealths do.


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