INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

408ci

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Old Aug 3, 2008 | 09:28 PM
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Default 408ci

any one no much about them....

trying to figer out a good cam for mine...

was thinking about a ms4... ? or maybe bigger...

most all cam are set for a 349ci motor...

how can i figer out the diff. for my 408ci motor
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Old Aug 3, 2008 | 09:35 PM
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we need more info on your truck, what is the rest of the mods?
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Old Aug 3, 2008 | 09:42 PM
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Originally Posted by ap2002
we need more info on your truck, what is the rest of the mods?
04 CHEVY TRUCK 408 13.5@103 1/4 225/62 afr head
Duration at 050 inch Lift: 216 int./224 exh.
1.8 rockers
11and3/4 to 1 compression
3.42 gears
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Old Aug 3, 2008 | 09:43 PM
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my cam in sig is a good 408 cam
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Old Aug 3, 2008 | 09:46 PM
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Default power

Originally Posted by dirt track racer 81
my cam in sig is a good 408 cam
what kind of power are you makeing with the cam & where do you shift at (RPM'S)
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Old Aug 3, 2008 | 09:50 PM
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Originally Posted by redchevytruck
what kind of power are you makeing with the cam & where do you shift at (RPM'S)
well considering my trans broke within 3 days of having it goin i have no clue
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Old Aug 3, 2008 | 09:55 PM
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Originally Posted by dirt track racer 81
well considering my trans broke within 3 days of having it goin i have no clue

damn it man.. sorry to hear that...... are you running the 4l60e. was it a built tran.. or stock
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Old Aug 3, 2008 | 09:58 PM
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it was the 60e and it was built. got my 370 goin a few months ago and the 3-4 clutch pack went out, i put the cam and .030 milled ls6 heads on and just drove it around with 1-2 gear once i got it running again and made a quick 1st gear pull and broke im guessin the output shaft as the speedo still works
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Old Aug 3, 2008 | 10:01 PM
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You've still got 3.42s?
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Old Aug 3, 2008 | 10:02 PM
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Originally Posted by dirt track racer 81
it was the 60e and it was built. got my 370 goin a few months ago and the 3-4 clutch pack went out, i put the cam and .030 milled ls6 heads on and just drove it around with 1-2 gear once i got it running again and made a quick 1st gear pull and broke im guessin the output shaft as the speedo still works
do you have a stall?

ya i m not to crazy about the 60e... when i first got my truck running ... i blow it up 3 times... this last time around its held togather for the last 6 mo.
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