|
Re: 340 SB Roller Rockers
[Re: kick_the_reverb]
#463861
09/11/09 06:45 PM
09/11/09 06:45 PM
|
Joined: Apr 2007
Posts: 871
WA 98043
thecarfarmer
super stock
|
super stock
Joined: Apr 2007
Posts: 871
WA 98043
|
I wouldn't run out and just buy any ol' rocker simply because it has rollers.
I was planning on running some Crane ductile 1.5's on my 383, with a roller cam that has .394" lobe lift (.591" at the valve) and uses moderate springs.
I found a couple were scored, and rather than have 'em bushed, I picked up a set of like-new Harland Sharp 1.7's that I found at a very, very good price. Not because my application NEEDED rollers, but because it was an upgrade in lift, and a good quality piece, for a good price.
But I wouldn't buy a cheap brand rocker, period.
-Bill
Seduce the attractive, and charm the rest.
******
489 C.I.D., roller cam, aftermarket heads, tunnel ram, stock '54 Dodge rear axle assembly: which of these doesn't belong?
|
|
|
Re: 340 SB Roller Rockers
[Re: patrick]
#463862
09/12/09 05:51 AM
09/12/09 05:51 AM
|
Joined: Sep 2003
Posts: 468
Germany, Northcoast
Buschi340
OP
mopar
|
OP
mopar
Joined: Sep 2003
Posts: 468
Germany, Northcoast
|
Quote:
what are the exact cam specs? adv. dur, .050 dur, and lift?
unless it's quite large, you're wasting your money on roller or adjustible rockers.
specs are as follows:
Intake / Exhaust
Valve Lift 0.503 / 0.503
Adv. Duration 270 / 284
Timing
Int open 5.0 BTDC close 41 ABDC
Exh open 55.0 close 3.0 ATDC
Springs are Ede's, quite stiff, will be changed to springs which are from the Cam Manufacturer these days.
Ok, I think I want to change the rockers because I think it is time to do so. They are very old now and I want something reliable which is not so loose / wobbly from its design.
|
|
|
Re: 340 SB Roller Rockers
[Re: Buschi340]
#463863
09/12/09 06:18 AM
09/12/09 06:18 AM
|
Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
|
I would tend to agree that you could use a new set of rockers do to metal fatigue if you are runnignin with the original rockers. A set of the HD stamped (I run consistamt 11.40's with them) with your push rods or a set of 273 or other doctile iron rockers and push rods for a hydraulic cammed engine with adjustable rockers will sork just fine. DON'T Go with the elcheapo eBay type rollers to save a buck. Good rollers are spendy and I have seen them come appart.
Clean it, if it's Dirty. Oil it, if it Squeaks.
But: Don't fix it, if it Works!
|
|
|
Re: 340 SB Roller Rockers
[Re: MoparforLife]
#463864
09/12/09 07:16 AM
09/12/09 07:16 AM
|
Joined: Sep 2003
Posts: 468
Germany, Northcoast
Buschi340
OP
mopar
|
OP
mopar
Joined: Sep 2003
Posts: 468
Germany, Northcoast
|
Quote:
A set of the HD stamped (I run consistamt 11.40's with them) with your push rods or a set of 273 or other doctile iron rockers and push rods for a hydraulic cammed engine with adjustable rockers will sork just fine. DON'T Go with the elcheapo eBay type rollers to save a buck. Good rollers are spendy and I have seen them come appart.
Hey, you are early up on a suturday...
what are these HD stamped rockers? Like the rockers which are already in but just HD?
And no, I never ever would buy El Cheapo. If I would do so I never had started this thread.... 
|
|
|
Re: 340 SB Roller Rockers
[Re: Buschi340]
#463865
09/12/09 08:58 AM
09/12/09 08:58 AM
|
Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
|
Yeah I am up earl but usually am with chores to do. Also am home alone. Wife went to Minneapolis to help with my daughter and husband take care of our 2 year old Grand daughter that fractured her leg. Real nasty break. But any back to subject on hand- The HD rockers are like the OEM rockers but heavier in crosssection in the pushrod area to aleviate breakage. Some write ups say this is not true   but they are working for me and for many others. I run dual springs installed at 1.80 on a .540/.557 lift cam. http://chucker54.stores.yahoo.net/mopper13.html Saves you purchasing push rods too. I also have a set of adjustable 273 rockers and a set of correct push rods laying here that I may some day use but they have been here for about 5 years now and still under the bed. Hey listen I am not telling you not to buy what ever you wish to buy. If you want to buy rollers and are more comfortable with them by all means go for it. Do what ever you feel better doing.  
Clean it, if it's Dirty. Oil it, if it Squeaks.
But: Don't fix it, if it Works!
|
|
|
Re: 340 SB Roller Rockers
[Re: MoparforLife]
#463867
09/12/09 09:24 AM
09/12/09 09:24 AM
|
Joined: Sep 2004
Posts: 22,873
Chicken coop
dustergirl340
Chicken Little
|
Chicken Little
Joined: Sep 2004
Posts: 22,873
Chicken coop
|
Quote:
The HD rockers are like the OEM rockers but heavier in crosssection in the pushrod area to aleviate breakage. Some write ups say this is not true but they are working for me and for many others.
Several years ago I broke a stock rocker in my 340 with a second one bulging and ready to go. We replaced them with the HD rockers and have not had a problem with breakage since.
|
|
|
|
|
.