pros and cons of solid flat tappet vs solid roller
#2061947
04/26/16 11:12 AM
04/26/16 11:12 AM
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Joined: Jan 2007
Posts: 8,161 Mt Morris Michigan
mopar dave
OP
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OP
master
Joined: Jan 2007
Posts: 8,161
Mt Morris Michigan
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I had my mind set on the hughes solid flat 268/272@50-.650 cam for my new 511 build, which will look something like this. 511,victor heads cnc'd by hughes flow 359@.600 and up, 332 port window, 11.5:1, 3350# weight, 8" vert, 727, 28" tire, currently a 4.30 but i have a 4.10 i can throw back in. This will use a 1100 dom as well. Now i'm also looking at a solid roller of 276/281@50-.680/.660 on 108. Performance wise what are the pros and cons of these two cams in this 511? Hughes used to advertise there solid flat cams as equal performance to a solid roller if using a 1.6 rocker arm on their solid flat cams. Not sure i can believe that, but i'm just looking for some input on this subject. This combo will be a street/strip deal or a street car i can race. Might see the track once per season. I guess what i'm asking is would this be a good pick if i go roller? Thanks
Last edited by mopar dave; 04/26/16 11:13 AM.
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Re: pros and cons of solid flat tappet vs solid roller
[Re: mopar dave]
#2061986
04/26/16 12:28 PM
04/26/16 12:28 PM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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Hilltown Pa
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The only pro a solid flat tappet would have is cost. But you would be giving up reliability and HP.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: pros and cons of solid flat tappet vs solid roller
[Re: mopar dave]
#2062042
04/26/16 02:08 PM
04/26/16 02:08 PM
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Joined: Jun 2014
Posts: 5,183
Porter67
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Unless one is using composite or tool steel lifters the pitfalls still remain. I run over #500 open on a solid cam some cores wear some dont and ive a couple billet cams with solid lobes.
Just different pitfalls with a roller with tips.
Some solids are not that far behind.
But its fun picking off other brands with a solid because for some reason people mention solid roller and some think super fast race car, kind like the old "3/4 cam in my 350 chevy"
But if all my stuff didnt match and interchange as it does now id of used a roller, have in the past and its sorta a different feel.
Last edited by Porter67; 04/26/16 02:09 PM.
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Re: pros and cons of solid flat tappet vs solid roller
[Re: mopar dave]
#2062065
04/26/16 02:49 PM
04/26/16 02:49 PM
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Joined: Aug 2003
Posts: 43,946 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,946
Bend,OR USA
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Last edited by Cab_Burge; 04/26/16 02:50 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: pros and cons of solid flat tappet vs solid roller
[Re: mopar dave]
#2062130
04/26/16 04:23 PM
04/26/16 04:23 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
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Posts: 19,318
State of confusion
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I had my mind set on the hughes solid flat 268/272@50-.650 cam for my new 511 build, which will look something like this. 511,victor heads cnc'd by hughes flow 359@.600 and up, 332 port window, 11.5:1, 3350# weight, 8" vert, 727, 28" tire, currently a 4.30 but i have a 4.10 i can throw back in. This will use a 1100 dom as well. Now i'm also looking at a solid roller of 276/281@50-.680/.660 on 108. Performance wise what are the pros and cons of these two cams in this 511? Hughes used to advertise there solid flat cams as equal performance to a solid roller if using a 1.6 rocker arm on their solid flat cams. Not sure i can believe that, but i'm just looking for some input on this subject. This combo will be a street/strip deal or a street car i can race. Might see the track once per season. I guess what i'm asking is would this be a good pick if i go roller? Thanks I like that roller myself..............
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: pros and cons of solid flat tappet vs solid roller
[Re: Sport440]
#2062147
04/26/16 05:13 PM
04/26/16 05:13 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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That roller is in my baby 470 and drive the snot out of it.........NOT too big at all.............
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: pros and cons of solid flat tappet vs solid roller
[Re: mopar dave]
#2062290
04/26/16 08:42 PM
04/26/16 08:42 PM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
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Balt. Md
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The main reason I went with a solid flat tappet on my car is that since its a street car and see's alot of miles I did not want to pull my roller lifters every few years and have them rebuilt because I would have wanted a solid roller with a good bit of spring pressure. So I went solid flat tappet and broke it in right as its been in the eng since 2011 with no problems. I just did not want to worry about my roller lifters since I know I would want to check them every few years at least. If mine was a race car I would have went roller for sure. Ron
Last edited by 383man; 04/26/16 08:42 PM.
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Re: pros and cons of solid flat tappet vs solid roller
[Re: mopar dave]
#2062320
04/26/16 09:34 PM
04/26/16 09:34 PM
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Joined: Oct 2003
Posts: 7,506 Az
Crizila
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Az
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IMO, "mostly street" tips it in the flat tappet direction. You will give up a small amount of HP for a lot less $, less valve train wear ( in particular springs ), and less moving parts to fail. Street is all about longevity, and when you are talking about lifts and durations that you are, light is right on the street. Hughes comments on flat vs roller cams was mostly based on the larger .904 lifter that Chrysler uses - which Hughes claims their cams are based on ( "real Chrysler cams")vs other cam manufactures.
Fastest 300
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Re: pros and cons of solid flat tappet vs solid roller
[Re: mopar dave]
#2062325
04/26/16 09:37 PM
04/26/16 09:37 PM
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Joined: Jan 2003
Posts: 1,387 Houston,Tx.
Lee446
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,387
Houston,Tx.
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The fact that you will be driving on the street over 90% of the time tells me that a solid F/T would be the way to go. My understanding is that solid rollers don't care too much for idleing in traffic due to lubrication issues. A Porter custom solid with nitride F/T cam and EDM lifters would make for a great performing, long lived street combo.
Last edited by Lee446; 04/26/16 09:38 PM.
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