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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: Von]
#1324457
10/23/12 03:09 PM
10/23/12 03:09 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
I'd wager at least by 1/2 second in the 1/4 mile.
 
Im assuming your flat tappet is a Comp 294S?? Which is a lazy lobe, 154 @.200. Dont know what brand your hyd roller is, but comparing it to some lobes in the Comp book, Id figure its around 164ish @.200. Id guess .1-.15 et difference at best between the 2.
really? Once the solid is lashed it's going to be around the 505 lift and will fall off well before the larger cam. Plus the roller cam will wind up fast and have a longer powerband. It also looks like the roller has a better grind. I do agree more gear and carb will help. But the stall seems like a good one.
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: kzinge1]
#1324458
10/23/12 03:23 PM
10/23/12 03:23 PM
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Joined: Aug 2003
Posts: 43,742
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,742
Bend,OR USA
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Last edited by Cab_Burge; 10/26/12 02:43 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: Mr.Yuck]
#1324461
10/23/12 08:52 PM
10/23/12 08:52 PM
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Joined: Feb 2005
Posts: 4,333
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,333
Prospect, PA
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Quote:
Once the solid is lashed it's going to be around the 505 lift and will fall off well before the larger cam.
You're not implying that lift has anything significant to do with rpm are you?
The extra lift does not get you much on those heads.
The biggest edge the hydraulic has is the 164 @ .200" verses the 153 @ .200"
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: BSB67]
#1324464
10/23/12 09:46 PM
10/23/12 09:46 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
Once the solid is lashed it's going to be around the 505 lift and will fall off well before the larger cam.
You're not implying that lift has anything significant to do with rpm are you?
The extra lift does not get you much on those heads.
The biggest edge the hydraulic has is the 164 @ .200" verses the 153 @ .200"
All I can tell is that 525 cam doesn't have the as good as a power range as the roller. Not sure how well his heads flow, but it the roller should work better.
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: Mr.Yuck]
#1324467
10/25/12 11:58 AM
10/25/12 11:58 AM
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Joined: Dec 2007
Posts: 284
Louisiana
kzinge1
OP
enthusiast
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OP
enthusiast
Joined: Dec 2007
Posts: 284
Louisiana
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Quote:
That cam should run good w/ what you have.. time to go for a ride 
That's the plan! Motor is in the car, should be able to fire it up in the AM.
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: kzinge1]
#1324468
10/26/12 01:37 AM
10/26/12 01:37 AM
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Joined: Dec 2007
Posts: 77
British Columbia Canada
Challenger340
member
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member
Joined: Dec 2007
Posts: 77
British Columbia Canada
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Just my opinion....run the Solid Flat tappet.
I wouldn't put a Hydraulic Roller in a friggín wheel barrow.... much less a stock block Mopar....unless I was bushing the Block Lifter Bores.
This could start a whole new thread....anybody got any actual Dyno data comparisons between Flat Tappets and HR's over .001" lifter Clrc in BB Mopars to 6K ?
I do...
and lets just say...IMO... it ain't pretty !
Better to be a "has been" than a "never was".
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: Challenger340]
#1324470
10/26/12 10:01 AM
10/26/12 10:01 AM
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Joined: Mar 2007
Posts: 3,300
Northern Indiana
Dunnuck Racing
master
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master
Joined: Mar 2007
Posts: 3,300
Northern Indiana
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Quote:
Just my opinion....run the Solid Flat tappet.
I wouldn't put a Hydraulic Roller in a friggín wheel barrow.... much less a stock block Mopar....unless I was bushing the Block Lifter Bores.
This could start a whole new thread....anybody got any actual Dyno data comparisons between Flat Tappets and HR's over .001" lifter Clrc in BB Mopars to 6K ?
I do...
and lets just say...IMO... it ain't pretty !
I agree 100% I don't have the data on hydraulic rollers personally but I have seen enough from others. ANY hydraulic will loose enough effective lift and duration while running up against a stiff valve spring and heavy valve,that a numbers comparison is impossible. Pair that with a more intense lobe design that a roller has and it gets worse
It takes a high quality lifter,good lifter bore clearance,and well thought out valvetrain to make a hydraulic roller work correctly at high rpm.
Keith
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: Dunnuck Racing]
#1324471
10/26/12 12:49 PM
10/26/12 12:49 PM
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Joined: Apr 2009
Posts: 3,433
Toronto
mshred
master
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master
Joined: Apr 2009
Posts: 3,433
Toronto
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I know its a small block, so take it for what it is, but I had a hydraulic roller in my small block and it made GREAT power...problem was rpms...two different grinds, and it just didn't like it so it seemed. Not sure why but the mopars for some reason, small and big block, have a real hard time making good power at rpm with hydraulic rollers. The GM and Ford guys spin theirs 7k plus no problems with the right parts, but it seems even with the expensive lifters and such for the mopars that they just can't handle the rpms...and that imo is a huge hindrance to power unless you are building a real low rpm grunt monster. This is just my opinion- I've only ever ran to hydraulic rollers in my small blocks, but am switching to a solid flat tappet over the winter, and am looking forward to the rpm-ability of it and not worrying about valvetrain issues
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: mshred]
#1324473
10/26/12 01:41 PM
10/26/12 01:41 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
I know its a small block, so take it for what it is, but I had a hydraulic roller in my small block and it made GREAT power...problem was rpms...two different grinds, and it just didn't like it so it seemed.
Not sure why but the mopars for some reason, small and big block, have a real hard time making good power at rpm with hydraulic rollers. The GM and Ford guys spin theirs 7k plus no problems with the right parts, but it seems even with the expensive lifters and such for the mopars that they just can't handle the rpms...and that imo is a huge hindrance to power unless you are building a real low rpm grunt monster.
This is just my opinion- I've only ever ran to hydraulic rollers in my small blocks, but am switching to a solid flat tappet over the winter, and am looking forward to the rpm-ability of it and not worrying about valvetrain issues
with a roller, the large tappet diameter isn't as critical, and with their smaller diameter, a SBC roller lifter is significantly lighter than a SBM one.
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: patrick]
#1324474
10/26/12 01:49 PM
10/26/12 01:49 PM
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Joined: Apr 2009
Posts: 3,433
Toronto
mshred
master
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master
Joined: Apr 2009
Posts: 3,433
Toronto
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Quote:
Quote:
I know its a small block, so take it for what it is, but I had a hydraulic roller in my small block and it made GREAT power...problem was rpms...two different grinds, and it just didn't like it so it seemed.
Not sure why but the mopars for some reason, small and big block, have a real hard time making good power at rpm with hydraulic rollers. The GM and Ford guys spin theirs 7k plus no problems with the right parts, but it seems even with the expensive lifters and such for the mopars that they just can't handle the rpms...and that imo is a huge hindrance to power unless you are building a real low rpm grunt monster.
This is just my opinion- I've only ever ran to hydraulic rollers in my small blocks, but am switching to a solid flat tappet over the winter, and am looking forward to the rpm-ability of it and not worrying about valvetrain issues
with a roller, the large tappet diameter isn't as critical, and with their smaller diameter, a SBC roller lifter is significantly lighter than a SBM one.
This I realize...But I would have thought there would have been some way to come up with something light enough that even with the mopar's tappet diameter, it would be able to rev higher...then again though, the way Chrysler parts are priced, that would be like an 800 dollar lifter 
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: patrick]
#1324475
10/26/12 01:57 PM
10/26/12 01:57 PM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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I cant and wont even try to tell you which cam to run as I have never used a Hyd roller cam to offer any input on it. But I am very glad and happy I went with a solid flat tappet in my bigblock in my 63. It has been in the car since the eng went in about a year and a half ago. It works very good to me and I like the fact that I dont run the higher spring pressures the solid roller needs since its a street car that I drive alot. As long as you use the right oil with the right amount of zinc I would not let that deter you from a flat tappet. I use the Valvoline VR1 Racing oil and always add a bottle of zinc additive with my oil changes and all works and has been fine. Just my opinion on why I like the solid flat tappet in my street car alot but as I said I cant speak for the Hyd roller. Ok back to the camshaft fight.  Ron
Last edited by 383man; 10/26/12 01:58 PM.
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Re: More Power---Hyd. Roller or Solid Flat Tappet?
[Re: 383man]
#1324476
10/26/12 02:50 PM
10/26/12 02:50 PM
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Joined: Dec 2007
Posts: 284
Louisiana
kzinge1
OP
enthusiast
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OP
enthusiast
Joined: Dec 2007
Posts: 284
Louisiana
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Quote:
I cant and wont even try to tell you which cam to run as I have never used a Hyd roller cam to offer any input on it. But I am very glad and happy I went with a solid flat tappet in my bigblock in my 63. It has been in the car since the eng went in about a year and a half ago. It works very good to me and I like the fact that I dont run the higher spring pressures the solid roller needs since its a street car that I drive alot. As long as you use the right oil with the right amount of zinc I would not let that deter you from a flat tappet. I use the Valvoline VR1 Racing oil and always add a bottle of zinc additive with my oil changes and all works and has been fine. Just my opinion on why I like the solid flat tappet in my street car alot but as I said I cant speak for the Hyd roller. Ok back to the camshaft fight. Ron
I am most likely going to use a solid flat tappet, probably similar to yours, Ron, when I rebuild my stroker motor. I will have about the same goals as you did. 10 sec street car that runs on pump gas, and gets lots of street miles.
I will stay away from the hyd. roller stuff from now on. I already had all the parts for the 426 to run a hyd. roller so I went with it. Should have it running soon and I'll let you guys know how it turns out.
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I have one stroker 426 hemi pump gas street motor running those pressures and it pulls really hard up to 7000 RPM 
