View Poll Results: better DD low end 402 cam 11.3:1
TSP233-239 .598-.603 113+1
11
21.15%
COMP CUSTOM 242-248 .610-.615 114+4
41
78.85%
Voters: 52. You may not vote on this poll
402 cam pick one
12-14-2006, 11:07 PM
#1
402 cam pick one well i have the 233-239 .598-.603 113+1 tsp on my 346 11.3:1SCR 8.5DCR for the fun of it i called COMP and they said a 242-248 .610-.615 on a 114+4 is what they said to do. for my new 402 it will hav the same 11.3:1 8.35:1DCR my only fear is this new cam will have a way lower DCR and nothing for bottom end.
it needs to be a DD and im keepin the AFR205s and 1 3/4 headers.
what you all think
it needs to be a DD and im keepin the AFR205s and 1 3/4 headers.
what you all think
Last edited by camarokid94; 12-15-2006 at 01:05 AM.
12-15-2006, 01:36 AM
#2
A stroker is going to have more "bottom end" than you need anyways. Comp is right. Call HPE and get a Big E cam from them. 244/248 .612 .615 that cam made 470hp and 470 tq in a buddys 408 with STOCK 241 heads. Torque curve was very flat and drove great with 3.42 gears. With 3.90 gears it was insane, you couldnt get it to hook for ****.
12-15-2006, 07:14 AM
#3
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i say get the 242/248 also.with the 205 heads you will have very high velocity/torque and still put up decent hp numbers also.i've got a 244/248 on a 110 +1 to go in my 408 .
12-18-2006, 08:58 AM
#6
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You have 11.54 comp and 8.42 DCR with the 402, 66 head cc, 7 thou out of the hole flat top pistons and .052 gasket thickness.
That is using the 242/248 114+4 XE-R cam. Should be a good combo on pump gas.
The smaller cam calcs out to: ~8.58 DCR (I used comp XE-R lobes in my calcs)
Both would be good cams, I actually like the smaller one as well. I think it'd give more area under the curve from 1800-5500rpm where you will do the meat of your driving. (If it is a street car)
Both would work fine though imo, depends on where your powerband preference is
That is using the 242/248 114+4 XE-R cam. Should be a good combo on pump gas.
The smaller cam calcs out to: ~8.58 DCR (I used comp XE-R lobes in my calcs)
Both would be good cams, I actually like the smaller one as well. I think it'd give more area under the curve from 1800-5500rpm where you will do the meat of your driving. (If it is a street car)
Both would work fine though imo, depends on where your powerband preference is
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12-18-2006, 05:21 PM
#9
Originally Posted by CHRISPY
You have 11.54 comp and 8.42 DCR with the 402, 66 head cc, 7 thou out of the hole flat top pistons and .052 gasket thickness.
That is using the 242/248 114+4 XE-R cam. Should be a good combo on pump gas.
The smaller cam calcs out to: ~8.58 DCR (I used comp XE-R lobes in my calcs)
Both would be good cams, I actually like the smaller one as well. I think it'd give more area under the curve from 1800-5500rpm where you will do the meat of your driving. (If it is a street car)
Both would work fine though imo, depends on where your powerband preference is
That is using the 242/248 114+4 XE-R cam. Should be a good combo on pump gas.
The smaller cam calcs out to: ~8.58 DCR (I used comp XE-R lobes in my calcs)
Both would be good cams, I actually like the smaller one as well. I think it'd give more area under the curve from 1800-5500rpm where you will do the meat of your driving. (If it is a street car)
Both would work fine though imo, depends on where your powerband preference is
well my heads are 61 im usin 10 out of the hole and ill be useing .040 gaskets adn 12cc dish pistons 6.125 rods and yes there both on X-er lobes.
i want bottom end im ok with less up top
yeah i goin 233-239 better street if i need top end ill turn the bottle on HEHE
or get a FAST 90/90 ported for more topend
12-25-2006, 10:19 PM
#13
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I built a 408 with the 233/239.....awesome torque and good power, but that was with a stock truck intake and throttle body, now its getting the VIctor Jr. and 4bbl throttle body as well as probably the 244/248 110lsa. The only reason I went with the 233/239 anyways is to try to keep the pwerband within the range of the truck manifold. Go with the 242/248!
maybe it wont be so bad... just might have enough topend i wont need to invest in the FAST 90/90 HHUUUMMMMM 
12-28-2006, 07:51 AM
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to me .... wanna smack and pull better past 6000 rmp and when you change to the next gear go with a bigger cam .... want better idle vacuum and a tamer idle and traffic light easy running stay 233-239.
the 233-239 cam is in a 346 .... now he has a 408 so the same cam is ok? I know it will work but I mean for the added stroke and different short block motion could you have a 233-239 cam ground on something with better specs (if there are others than what I`ll say) other than the the duration@50 maximum lift and lsa and icl where both the standard 346 cam and the 408 cam will be the same?
sorry just had to ask maybe it`s stupid! maybe I`ll learn something for a stroker build.
the 233-239 cam is in a 346 .... now he has a 408 so the same cam is ok? I know it will work but I mean for the added stroke and different short block motion could you have a 233-239 cam ground on something with better specs (if there are others than what I`ll say) other than the the duration@50 maximum lift and lsa and icl where both the standard 346 cam and the 408 cam will be the same?
sorry just had to ask maybe it`s stupid! maybe I`ll learn something for a stroker build.
Last edited by Bader-X; 12-28-2006 at 07:57 AM.
