Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: A/MP]
#2598667
12/30/18 02:11 AM
12/30/18 02:11 AM
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Joined: Jun 2005
Posts: 793 Utah
topbrent
super stock
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super stock
Joined: Jun 2005
Posts: 793
Utah
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This is a different angle to consider in your quest to find the Colonel's secret 11 herbs and spices.
Do you want to go fast or not? Buy the parts that suit either of those answers.
1. Good heads are always the answer.
2. Spend a sizable sum on a very, very good, properly spec'ed torque converter from a shop that is known and trusted. If you are handicapping yourself from the start with a mild engine with a small cam, don't further hobble the combination with an el-cheapo 11" 2200 stall converter(for example)..."because it's a street car"... The car doesn't know if it is the street or the track.
I can tell you from experience that a tight A-1 8" converter drives fantastic on the street behind a 620hp 505" in a not featherweight B-body with nearly zero slop/mush and flashes to 4800 lightning fast. Very fun.
.02
Last edited by topbrent; 01/01/19 03:14 AM.
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: A/MP]
#2598676
12/30/18 02:31 AM
12/30/18 02:31 AM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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Without spending a ton of $ on a build, best way to make big HP naturally? Keep it simple with a total car weight of 3300-3400 lbs. SB or BB. Easily driven on the street, yet with some 10.5 slicks be in the realm of 11.0-11.5. I saw a few times that Pitts/racer's son was running mid-low 10's with a factory parts 360. If I recall properly that cam was @.530? That's a lower spring rate and easy on the street. Probably someone has also done this with a stock stroke BB. What's a good formula for either? Matt’s 360 has a .600 lift roller in it now that I bought on Moparts for 100 dollars. It’s gone 6.54 several times which should be 10.20-10.30’s at 3200 pounds.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: A/MP]
#2598694
12/30/18 04:35 AM
12/30/18 04:35 AM
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Joined: Mar 2009
Posts: 2,467 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,467
Sydney,Australia
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My .520 lift 440 B body has gone 10.71 . This is a pump gas 10.75:1 motor Top end head choice is important , but what previous guys noted all helps . Nothing too special in mine Daily driver
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: tex013]
#2599235
12/31/18 02:55 PM
12/31/18 02:55 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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My .520 lift 440 B body has gone 10.71 . This is a pump gas 10.75:1 motor Top end head choice is important , but what previous guys noted all helps . Nothing too special in mine Daily driver
Tex FWIW, my 440's last incarnation while still using ported OEM iron heads had a Racer Brown .520" SFT, although I did use 1.6s on the intakes. Even if I'd gone back to 1.5s on I & E, it would have still been a low 11-sec pump-gas street car at 3700#s.
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: A/MP]
#2599430
12/31/18 08:55 PM
12/31/18 08:55 PM
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Joined: Mar 2009
Posts: 2,467 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,467
Sydney,Australia
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I did go 11 teens with a 509 cam and cleaned up Source heads . Same bottom end as above
Tex
Last edited by tex013; 12/31/18 09:02 PM.
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: A/MP]
#2599535
12/31/18 11:11 PM
12/31/18 11:11 PM
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Joined: Oct 2007
Posts: 4,209 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,209
New York
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The more vertical the stem angle, the more intake lift matters (OEM B/RB 15°, LA 18°) to get the valve head away from the cylinder wall. A 1.6 (or more) rocker will help, but you can also relieve the chamber wall back around the valve pocket in the head. Some ideas on my site here: http://victorylibrary.com/mopar/chamber-tech.htm
Boffin Emeritus
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: A/MP]
#2599676
01/01/19 08:08 AM
01/01/19 08:08 AM
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Joined: Apr 2016
Posts: 184 Memphis,TN
J. Hammer
member
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member
Joined: Apr 2016
Posts: 184
Memphis,TN
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Not sure I under stand the question? The .520 cam that your talking about is no where near mild. I use them and they run circles around many grinds but they are not easy on parts. As far as running those numbers we often use hyd grinds with 3.73 gears in 10 to 1 all iron sb mopars that get street driven many miles on 91 octane pump gas.These are not big HP deals just mild stuff. Not tricks needed for that application.A big block is overkill IMO.
Last edited by J. Hammer; 01/01/19 08:27 AM.
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: merpar]
#2600003
01/01/19 05:29 PM
01/01/19 05:29 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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Try Isky Mega cams. Good selection and makes good power. I've used a couple in 451 low decks and 440's. Favorite in hyd. 525 lift 256 duration. Those mega cams are all hydraulic aren't they? I've never seen a mega cam for solid lifters, but there is a bunch I haven't seen.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: LSP]
#2600487
01/02/19 04:09 PM
01/02/19 04:09 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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Simple - more duration, more converter flash, more rpm I’ll agree with all the above except for more rpm. Jim at Racer Brown loved when I called for cams as I would give him an exact number on stall and head flow test numbers at every .050 instead of .100 lift. My 408 on BP 93 Ran 9.80’s shifting at 6400 rpm with one of Jim’s tweaked .520 lift cams. This was a Econo W2 headed combo that I did some mild porting work to. Heck they still had the 3/8 inch 2.02 valves in them.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: pittsburghracer]
#2600496
01/02/19 04:21 PM
01/02/19 04:21 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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Crazy RPM is the main reason I’ve stayed away from building a W8 or W9 combo. They are fine for the test n tuners or guys that race 2-5 times a year. I would hate to see the price tag on some of these builds and their maintenance costs. I lean towards plain simple budget builds without the tricks and gadgets
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: J. Hammer]
#2600519
01/02/19 05:19 PM
01/02/19 05:19 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Not sure I under stand the question? The .520 cam that your talking about is no where near mild. I use them and they run circles around many grinds but they are not easy on parts. What cam are you referring to? I didn't see the OP mention one specifically, so I'm a bit confused... as usual. If you're referring the Racer Brown ST-21 I used to run, I know that's not the easiest on the valve train; from my experience it did NOT like to RPM much past 6300 before the valve train would float so bad it almost felt like it hit a rev limiter.
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: A/MP]
#2600524
01/02/19 05:25 PM
01/02/19 05:25 PM
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Joined: Oct 2007
Posts: 4,209 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,209
New York
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Don't you hate to read remarks and reviews about this or that engine "loves to rev"? Generally the author is completely confused between basic design and low flywheel weight. As Widmer says, "RPM means 'ruins people's motors'".
Boffin Emeritus
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: pittsburghracer]
#2600530
01/02/19 05:31 PM
01/02/19 05:31 PM
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Joined: Jan 2006
Posts: 1,400 Trumbauersville PA
ric3xrt
pro stock
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pro stock
Joined: Jan 2006
Posts: 1,400
Trumbauersville PA
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Simple - more duration, more converter flash, more rpm I’ll agree with all the above except for more rpm. Jim at Racer Brown loved when I called for cams as I would give him an exact number on stall and head flow test numbers at every .050 instead of .100 lift. My 408 on BP 93 Ran 9.80’s shifting at 6400 rpm with one of Jim’s tweaked .520 lift cams. This was a Econo W2 headed combo that I did some mild porting work to. Heck they still had the 3/8 inch 2.02 valves in them. What does that duster weigh? more of a curious Question.
Truth has no agenda, but those with an agenda make their own truth. Some of us are so open minded they only see their View
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Re: MAKING POWER WITH LOW LIFT FT CAM
[Re: ric3xrt]
#2600542
01/02/19 05:46 PM
01/02/19 05:46 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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Simple - more duration, more converter flash, more rpm I’ll agree with all the above except for more rpm. Jim at Racer Brown loved when I called for cams as I would give him an exact number on stall and head flow test numbers at every .050 instead of .100 lift. My 408 on BP 93 Ran 9.80’s shifting at 6400 rpm with one of Jim’s tweaked .520 lift cams. This was a Econo W2 headed combo that I did some mild porting work to. Heck they still had the 3/8 inch 2.02 valves in them. What does that duster weigh? more of a curious Question. back then 2800 pounds. 2860 now as I keep making it racer friendly.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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