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What kind of power would you guys forcast for my 408?

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Old 01-29-2005, 01:24 PM
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Default What kind of power would you guys forcast for my 408?

Well, it's final. I ordered everything I need to build a 9.5:1 408. When I can afford to I'm going to add a blower (probably at the end of this summer), but for now it's going to have

-AFR 225heads w/72cc chamber
-ls6intake
-stock tb
-kooks 1 7/8" headers
-3.90 gears (to be changed when the blower goes in)
-238/242 .605/.610 113+4 lsa cam (this was my old cam from my h/c setup, but of course I'll go w/a custom cam as soon as the blower goes in).

Anyways, what do you guys think I can get out of this low compression motor until I'm ready for the blower? Keep in mind, I'm not going to get my pride hurt if someone says 430rwhp or something like that, it's not an n/a motor, just tell me what you think. I'm hoping for around 480rwhp, is that doable?I'll be throwing probably just a 100-150 shot in the "down" time as well. It'll do for now
Old 01-29-2005, 02:04 PM
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I had a 9.0:1 compression 408 with about the same size cam. I made 450rwhp through a TH400 and a 9in on slicks. I only had a 1 3/4 primary though.
Old 01-29-2005, 06:27 PM
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Anyone else?
Old 01-29-2005, 06:58 PM
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By the way the car went 10.6's with that setup also. Then I sprayed it and it went 5.96 in the 1/8.
Old 01-29-2005, 07:00 PM
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Originally Posted by GueSS Who
By the way the car went 10.6's with that setup also. Then I sprayed it and it went 5.96 in the 1/8.
Wow, those are some good #'s! With the irs I'd be amazed to see 10's, but the power is there
Old 01-29-2005, 10:37 PM
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6-speeds are alittle harder to go fast. I had one I know. LOL
Old 01-30-2005, 04:21 AM
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i'll guess 460
Old 01-31-2005, 01:12 AM
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Anyone for 470??
Old 01-31-2005, 12:30 PM
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my 408 with little bigger cam and built for spray through TH400 dynoed 458rwhp and 532 rwtq

very impressive numbers . . still not done yet




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