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Re: B 400 solid roller
[Re: robnbird]
#1653235
07/31/14 09:46 AM
07/31/14 09:46 AM
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Joined: Jan 2003
Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
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I will just offer some of my results.
499 B motor, 12.9/1 compression, 440-1 heads bowl porting only, Alky injected went 9.34 @ 143 mph with a 283/290/110 UltraDyne cam with about .717 lift. Torqueflite, 3,000 lbs.
4.15 stroke 4.500 bore Megablock motor,440-1 fully ported, alky injected 3,050 lbs went 8.77 at 153 mph with the Isky RR735 cam, 280/288/110 duration, in at 110 using 1.55 rockers for .761 lift.
Comp custom grind put into the 528, 283/296/112, .775 lift in at 110, very little if any gain, no change in power band.
If I were building your motor, it would get all the compression I could build into it for the fuel you plan to use. If your compression comes in at 13/1 or less, I would stick with a cam that is a bit shorter on duration (max intake duration 272 to 280 at .050) but plenty of lift.
Secondly, max port the heads before spending money else where. I have seen 499 motors that went about as fast with ported heads and a solid flat tappet as I have run with a roller and unported heads.
Last edited by gregsdart; 07/31/14 09:59 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: B 400 solid roller
[Re: robnbird]
#1653237
07/31/14 01:07 PM
07/31/14 01:07 PM
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Joined: Jan 2003
Posts: 5,486
SoCal
Brian Hafliger
master
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master
Joined: Jan 2003
Posts: 5,486
SoCal
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What's been done to the engine itself??
Brian Hafliger
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Re: B 400 solid roller
[Re: robnbird]
#1653238
07/31/14 01:08 PM
07/31/14 01:08 PM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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I was thinking you were staying at 400 cubes if not heres my Isky solid roller; .680-.660 lift .275-280 @ .050 108 lsa installed around 104-105 and 97 degrees overlap VERY spunky and streetable @ 470 cubes............... 
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: B 400 solid roller
[Re: robnbird]
#1653239
07/31/14 01:33 PM
07/31/14 01:33 PM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Quote:
those are some good results Greg and thanks . I was thinking of about 650 lift and about 290ish duration . MP has one that is 300 duration and 625 , and another that is like 297 and 660 . thanks again
For your goals of 6.0 in the 1/8 499 ci and 3200# thats Way more duration then you Want or need. You could get it done with a roller around 268 to 275 / .650 lift. 290 to 297 In.  no need.
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Re: B 400 solid roller
[Re: gregsdart]
#1653241
07/31/14 04:40 PM
07/31/14 04:40 PM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Quote:
Quote:
Quote:
those are some good results Greg and thanks . I was thinking of about 650 lift and about 290ish duration . MP has one that is 300 duration and 625 , and another that is like 297 and 660 . thanks again
For your goals of 6.0 in the 1/8 499 ci and 3200# thats Way more duration then you Want or need. You could get it done with a roller around 268 to 275 / .650 lift. 290 to 297 In. no need.
Are we all talking duration at .050 tappet lift?
Yes, That crossed my mine, but that 297/660 lift cam has to be @ .050 The MP 509 advertised is 292/509 The cams hes referring to cant be the advertised duration IMO
Im speaking @ .050 and I know you are too. I hope he knows the difference also. But , looks like he referencing them @ .050 too.
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Re: B 400 solid roller
[Re: robnbird]
#1653242
07/31/14 04:56 PM
07/31/14 04:56 PM
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Joined: Aug 2003
Posts: 43,225
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,225
Bend,OR USA
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Quote:
I would like you opinion on a roller . or what is your set up with a 400 ? I have a 68 RR 3200lb Dana 60 4.88 , 4 link , coil over front . 727 5000 stall ...
As already mentioned, we need more information on your parts before offering a cam design suggestion    Which heads,intake and carb. size, which fuel, intended or desired RPM shift point and so on
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: B 400 solid roller
[Re: robnbird]
#1653243
07/31/14 05:20 PM
07/31/14 05:20 PM
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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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Cant offer a cam choice without at least head info such as flow at what lift.. otherwise its a guess.. but the max RPM you want to turn also, fuel 
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Re: B 400 solid roller
[Re: gregsdart]
#1653245
07/31/14 06:05 PM
07/31/14 06:05 PM
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Joined: Nov 2010
Posts: 914
tn
robnbird
OP
super stock
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OP
super stock
Joined: Nov 2010
Posts: 914
tn
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Quote:
Quote:
Quote:
those are some good results Greg and thanks . I was thinking of about 650 lift and about 290ish duration . MP has one that is 300 duration and 625 , and another that is like 297 and 660 . thanks again
For your goals of 6.0 in the 1/8 499 ci and 3200# thats Way more duration then you Want or need. You could get it done with a roller around 268 to 275 / .650 lift. 290 to 297 In. no need.
Are we all talking duration at .050 tappet lift?
yes at .050
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Re: B 400 solid roller
[Re: robnbird]
#1653247
07/31/14 06:09 PM
07/31/14 06:09 PM
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Joined: Nov 2010
Posts: 914
tn
robnbird
OP
super stock
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OP
super stock
Joined: Nov 2010
Posts: 914
tn
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Quote:
I am just now starting on the motor .. I ordered a 4.150 rotating kit with 6.760 rods and 1.120 CH pistons 4.375 bore ... 3200 lb car with 4link , 4.88 coil over front . 727 5000 stall . edelbrock victor max heads .. undecided on a intake and camshaft . So I am all ears
A DH around 9.970 .. compression close to 12.7 is my calculation
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Re: B 400 solid roller
[Re: robnbird]
#1653252
07/31/14 07:40 PM
07/31/14 07:40 PM
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Joined: Jan 2003
Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
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Quote:
Greg thanks .. What would your numbers be for a 650 to a 670 lift .
If you are asking what duration for those lift numbers, you can have about any duration you want. Comp cams offers .440 lobes, which have .660 gross lift with 1.5 rockers in durations of from 250 to 290 at .050. They have many other series of lobes, with lobe lifts of .460, .470. .484, etc. A .460 lift cam lobe would be .690, minus lash of say .026, for a net lift of .664
When calculating max lift, you subtract the valve lash from the gross lift. Lets say you have .700 lift, running .026 lash. Net lift will be .674, and actually maybe .010 less due to compression of all the valvetrain parts under load. But lets use a .700 gross lift as a starting point. With a max of .674 net lift, you need to add .070 for a safety margin to spring coil bind. That gives you .744 to add to the spring coil bind height to figure out the shortest possible installed height. If your springs have a coil bind height of 1.130, then add 1.130 to .744 and your shortest installed height is 1.864 There isn't a head made for BB mopars that won't go higher on installed height, so I am not sure why you want to limit the total lift. A gross lift of .700 will actually only reach about .670 as said before, and most heads will keep on flowing above that. Good springs and the right rate of lift on the lobes is as or more important than total valve lift up to a point. .700 to .740 gross lift can be set up to be very reliable and go many rounds without needing maintenance like spring changes and rebuilt lifters.
Last edited by gregsdart; 07/31/14 07:49 PM.
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Re: B 400 solid roller
[Re: robnbird]
#1653253
07/31/14 07:46 PM
07/31/14 07:46 PM
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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:
Thanks Mr P I just got back and I just posted my info . except the carb and probably a 1050 dom to start with .
Sorry I dont see where the head flow stuff is
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