408 w/victor jr speedo run

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01-24-2007, 07:29 AM

#31

Rhino79

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Quote:

Originally Posted by ap2002

I dont even think it downshifted on the video, did it?? if not...

On the first run it downshifted to 2nd (was in third), and I got it shifting at about 6500-6600, it only drops to 5400 when it shifts with the TCI 4000. On the 2nd pull it downshifted from 4th to 3rd at about 70ish.

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01-24-2007, 07:56 AM

#32

dirt track racer 81

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i would like to see what it does with some ls6 or better heads

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01-24-2007, 08:01 AM

#33

Rhino79

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Soon, its getting a set of ported 317's milled .045". Right now its running stock iron heads that I just blended the bowls on. It's only 10:1 comp, should be close to 11:1 then.

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01-24-2007, 12:11 PM

#34

Chris05ssTruck

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Hell ya man should roll even better then! Been looking at some 408's myself lately but with the $ factor might have to go with a 6.0!

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01-24-2007, 12:14 PM

#35

dirt track racer 81

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Quote:

Originally Posted by Rhino79

Soon, its getting a set of ported 317's milled .045". Right now its running stock iron heads that I just blended the bowls on. It's only 10:1 comp, should be close to 11:1 then.

whats the cc on the combustion chamber going to be once you mill them that much and what about pushrod length..i may go that route instead of buy ls6 heads

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01-24-2007, 12:20 PM

#36

Chris05ssTruck

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Should pick up alot with the heads!

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01-24-2007, 01:34 PM

#37

bluecajun5.3

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badass guys! nice strong engine

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01-24-2007, 06:44 PM

#38

Rhino79

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Quote:

Originally Posted by dirt_track_racer_81

whats the cc on the combustion chamber going to be once you mill them that much and what about pushrod length..i may go that route instead of buy ls6 heads

Well every .006" is supposed to be 1cc so that should put them at about 66.5cc's, now they are 73cc's and using a .051" gasket. So with the 317's at 66.5cc and a .040" gasket should help a bit. LS6 heads would be ideal, but he's gettin these for $100, so he could pass that kind of deal up.

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