Re: Cam Suggestions??
[Re: belvedere383]
#494087
10/13/09 09:21 AM
10/13/09 09:21 AM
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Joined: Jan 2003
Posts: 13,496 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,496
Marion, South Carolina [><]
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LOL, didn't realize you're in Ohio. I was thinking maybe you were in Lima, Peru. The SRs I had are not as good as what you have. They flow less than 300 cfm out the box (early castings), you said your heads flow 350+. I did have more compression, but you have 40 more cubic inches (1/2" more stroke). I'm not saying my combo ran this much better than yours and trying to make anyone feel bad, just giving you something to compare it too since they have some similarities. You can't really compare dynos, but that motor in my car put 508 hp and about 460 ft. lbs. to the rear wheels on the local DynoJet chassis dyno. I agree with the timing, 30 degrees is too low. You need to be around 36 degrees. CHIP
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 4 speed, Dana 60 '71 Demon 340, no drivetrain, on blocks behind the barn '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Cam Suggestions??
[Re: Hemiroid]
#494088
10/13/09 09:22 AM
10/13/09 09:22 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
If you're only running 30* of timing, that's a lot of where you hp has gone. Set the timing around 36* and I'm sure it will pick up. No worries about timing at 36*-38* with 110 octane race gas.
bump the timing up... should wake it up
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Re: Cam Suggestions??
[Re: MR_P_BODY]
#494089
10/13/09 10:25 AM
10/13/09 10:25 AM
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Joined: Mar 2008
Posts: 202 Barboursville, VA
belvedere383
OP
enthusiast
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OP
enthusiast
Joined: Mar 2008
Posts: 202
Barboursville, VA
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I run a Ram clutch, launch at 4700, and I don't really know where I trap, but I think iTs around 6200.
And defiantly no hard feelings I appreciate all the help I can get.
65' Belvedere
496'' Stroker Indy Heads
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Re: Cam Suggestions??
[Re: LAR_414]
#494091
10/13/09 12:53 PM
10/13/09 12:53 PM
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Joined: Mar 2008
Posts: 202 Barboursville, VA
belvedere383
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enthusiast
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OP
enthusiast
Joined: Mar 2008
Posts: 202
Barboursville, VA
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i was slipping the clutch, but if i get another chance to go to the track before it closes i am going to try and be more aggressive.
65' Belvedere
496'' Stroker Indy Heads
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Re: Cam Suggestions??
[Re: belvedere383]
#494092
10/13/09 01:01 PM
10/13/09 01:01 PM
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Joined: Jan 2007
Posts: 1,668 Mi,U.S.A.
mike s
top fuel
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top fuel
Joined: Jan 2007
Posts: 1,668
Mi,U.S.A.
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My thought was since it was a heavy street car a bit more torque would help the car accelerate.I would have limited the cam duration to about 276@.050.The installed cam is fine if the engine can stay in the sweet spot.I The timing should be 34-35 degrees and that will pick the car up alot. Depending on the tires a 4.10-.4.30 would be optimal.I think the others will agree a tall as possible tire is a good idea also.There is enough h.p. to run low 10's if everything is right but I am bit bit leery of the torque output.
Leave the gun.......take the Cannoli's....Mike
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Re: Cam Suggestions??
[Re: mike s]
#494093
10/13/09 01:06 PM
10/13/09 01:06 PM
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Joined: Mar 2008
Posts: 202 Barboursville, VA
belvedere383
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enthusiast
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enthusiast
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Posts: 202
Barboursville, VA
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it has no problem staying up in the revs, and i run a 28x10.5 goodyear slick. I really think some timing, seat time, and a gear would make my car run like it should.
65' Belvedere
496'' Stroker Indy Heads
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Re: Cam Suggestions??
[Re: LAR_414]
#494095
10/13/09 01:46 PM
10/13/09 01:46 PM
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Joined: Mar 2008
Posts: 202 Barboursville, VA
belvedere383
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enthusiast
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OP
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Posts: 202
Barboursville, VA
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I will try that launch technique, the fueling issue though i really dont see it as a problem. The car never loses any MPH, it always goes 123-125. And my fuel pressure stays consistent down the track so i will double check but i think i can mark that off of the list.
I may try and put the cam at 0 or 2* retarded rather than 2* advance and see what that does for me.
65' Belvedere
496'' Stroker Indy Heads
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