stroker cam
Thread Starter
Burning Brakes
Joined: Jun 2003
Posts: 1,022
Likes: 6
From: CT
stroker cam
Will a comp cam XS290 solid lifter cam be too much for this combo?
cam specs- 290/298 252/260 .576/.598(1.6 rockers) 110LSA
Stroker 4.040 X 3.75
forged bottom end
11.1 compression
200cc Pro-topline alum. 2.02, 64cc
victor jr. intake w/1" HVH super sucker spacer
harland sharp roller rockers
750 speed demon carb
1 5/8" headers ( 1 7/8 hookers w/ sidepipes eventually)
4spd 3.73 gears
I want a 6,500-7,000 rpm motor and mean sounding idle, but I still have to power my power brakes. Will this cam be a good match for this combo?
Thanks,
L-82Kid
cam specs- 290/298 252/260 .576/.598(1.6 rockers) 110LSA
Stroker 4.040 X 3.75
forged bottom end
11.1 compression
200cc Pro-topline alum. 2.02, 64cc
victor jr. intake w/1" HVH super sucker spacer
harland sharp roller rockers
750 speed demon carb
1 5/8" headers ( 1 7/8 hookers w/ sidepipes eventually)
4spd 3.73 gears
I want a 6,500-7,000 rpm motor and mean sounding idle, but I still have to power my power brakes. Will this cam be a good match for this combo?
Thanks,
L-82Kid
NCM Grand Opening Veteran
Joined: Sep 2005
Posts: 20,979
Likes: 384
From: South of giving a damn
St. Jude Donor '11, '17
I can't say about the cam, but I think your heads are a little small for that RPM range. I'd figure 215 - 230 w/ either 2.05 or 2.08 intakes. The beathability may suffer on the top end.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,443
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
It will have this alright! mean sounding idle,
I'm kind of a wimp when it comes to solid cams. I always went for go not show. The biggest cam I used in my 383 with flat top 64 cc heads was 240/248 112 lc.
At Wed. night cruises many cars had bad a$$ sounding machines with radical cams like yours. The 4 speed will help. I have a 13 meg movie I did with my 383 of a startup and idle. My digital camera sound kind of goes into overload from the noise. I could e-mail it to you.
I ran mine to 7500 rpm on a regular basis and the hot rodded Vipers could not take me on road racing courses on the straights from 70 mph -140 before braking
I'm kind of a wimp when it comes to solid cams. I always went for go not show. The biggest cam I used in my 383 with flat top 64 cc heads was 240/248 112 lc.
At Wed. night cruises many cars had bad a$$ sounding machines with radical cams like yours. The 4 speed will help. I have a 13 meg movie I did with my 383 of a startup and idle. My digital camera sound kind of goes into overload from the noise. I could e-mail it to you.
I ran mine to 7500 rpm on a regular basis and the hot rodded Vipers could not take me on road racing courses on the straights from 70 mph -140 before braking
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,443
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Originally Posted by SmokedTires
That seems like a pretty big cam, don't know if I'd go that big. Idle characteristics come from the lobe separation angle 
As overlap increases - reversion into the intake manifold increases creating the stecato ruff idle of racing motors.
Le Mans Master
Joined: Apr 2005
Posts: 6,335
Likes: 416
From: Seattle Area WA
Cams
That still sounds huge for a cam, and the 110 centers will not do you any good. Have it ground on 112 to 114 centers to reduce the overlap and compensate for the crummy idle you will end up with as a result of the longer duration. Personally, I would not venture far from the 230-240 duration range.
Burning Brakes
Joined: Jan 2006
Posts: 1,096
Likes: 0
From: Horsetown USA (Norco) Kaleeforkneeah
Originally Posted by L-82kid
but I still have to power my power brakes. Will this cam be a good match for this combo?
Thanks,
L-82Kid
Thanks,
L-82Kid
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Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
I'm running that cam in my 385 SB right now. It idles fine at 1000 rpm. No problems at all with this cam. It really hauls from 3000 rpm and up. It is not a DD cam for sure but makes good power above 3000 rpm. I don't have vacuum brakes but it makes enough vacuum to operate the headlights. About 8 to 9 inches at 1000 rpm
Burning Brakes
Joined: Jun 2005
Posts: 1,129
Likes: 105
From: laingsburg MI
2020 C3 of the Year Finalist - Modified
I have this cam in my 383 with 195cc heads & victor jr. intake. it idles rough at about 975 rpm but works well with a 4 speed & 4:10 gear. pulls well from 2800 -7000. it did take a fair amount of carb tuning to get the low end crisp. 825 mighty demon
Burning Brakes
Joined: Jun 2005
Posts: 1,129
Likes: 105
From: laingsburg MI
2020 C3 of the Year Finalist - Modified
also, i am running 1.6 roller rockers &11:1 comp. Author david vizard has published some data on lobe centers demonstrating that stroker motors (383) like a tighter spec than 350s, just thought you may want to check it out. But having said that comp cams spe'd a smaller cam for my combo, but i would not go smaller for my use.
