Re: help me pick rockers for 440
[Re: Forest]
#2846092
11/14/20 02:10 PM
11/14/20 02:10 PM
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Joined: Jan 2003
Posts: 11,786 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,786
Portage,michigan
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I'm looking for opinions. We have a 440 in my wife's duster that is drag race use only. It has the ProMaxx heads. I think they are a copy of a Edelbrock RPM? Either way we have ran the motor for 2 seasons with stock rocker arms and push rods. It has a Launati Voodoo hydraulic flat tappet cam with .533 lift. It ended up bending a pushrod and breaking the adjacent rocker arm at the last race this year. So it's time for an upgrade.
Originally I was thinking of the chromoly comp rockers but the max spring diameter is much less than Harland Sharps. I'm open to anyones thoughts or suggestions. I would look into the rockers Mancini is selling. Made by Harland Sharp, lifetime warranty, under 500 bucks. Buddy runs the small block versions of them on his trick flow heads and really likes them. Great bang for the buck https://www.manciniracing.com/ben15alro.html
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car Best so far, 10.32 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: help me pick rockers for 440
[Re: Forest]
#2846093
11/14/20 02:13 PM
11/14/20 02:13 PM
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Joined: Oct 2006
Posts: 1,266 New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
Posts: 1,266
New York, USA
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I heve used them ( Comp Magnum Ultra Pros) on 2 engines recently. Mine has stealth heads and uses them with isky 9315 springs, which are 1.550”. No problems at all and no contact at all. Almost 2 years now and about 2500 street miles and a bunch of runs at the track. Work perfectly with no issues. Recently removed and inspected. The other engine has Ttricklow 240s, but their hyd roller springs are 1.54”. So no issues their either.
Last edited by Chargerfan68; 11/14/20 02:15 PM.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: help me pick rockers for 440
[Re: Forest]
#2846146
11/14/20 04:03 PM
11/14/20 04:03 PM
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Joined: Oct 2007
Posts: 4,219 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,219
New York
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The largest diameter pushrods you can fit
Boffin Emeritus
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Re: help me pick rockers for 440
[Re: BSB67]
#2846217
11/14/20 06:02 PM
11/14/20 06:02 PM
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Joined: Mar 2003
Posts: 916 SE Washington
Forest
OP
super stock
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OP
super stock
Joined: Mar 2003
Posts: 916
SE Washington
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what spring diameter do you think you need? It currently has 1.45" diameter springs now. My thought was get 2 more seasons on the short block. Then do a stroker kit and possibly a solid roller on the freshen up. I'm not a engine builder, but I don't want to spend $700 on rockers then get in a pickle later on valve springs and wish I would have bought the Harland Sharps...
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Re: help me pick rockers for 440
[Re: polyspheric]
#2846219
11/14/20 06:03 PM
11/14/20 06:03 PM
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Joined: Mar 2003
Posts: 916 SE Washington
Forest
OP
super stock
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OP
super stock
Joined: Mar 2003
Posts: 916
SE Washington
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The largest diameter pushrods you can fit totally agree, it would be nice if 3/8" would go right in...?
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Re: help me pick rockers for 440
[Re: Chargerfan68]
#2846220
11/14/20 06:10 PM
11/14/20 06:10 PM
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Joined: Mar 2003
Posts: 916 SE Washington
Forest
OP
super stock
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OP
super stock
Joined: Mar 2003
Posts: 916
SE Washington
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I heve used them ( Comp Magnum Ultra Pros) on 2 engines recently. Mine has stealth heads and uses them with isky 9315 springs, which are 1.550”. No problems at all and no contact at all. Almost 2 years now and about 2500 street miles and a bunch of runs at the track. Work perfectly with no issues. Recently removed and inspected. The other engine has Ttricklow 240s, but their hyd roller springs are 1.54”. So no issues their either. Ok cool, I just read on Summit that 1.45" was the limit, but obviously not! I think they would be a good rocker for the money!
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Re: help me pick rockers for 440
[Re: B3422W5]
#2846223
11/14/20 06:12 PM
11/14/20 06:12 PM
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Joined: Mar 2003
Posts: 916 SE Washington
Forest
OP
super stock
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OP
super stock
Joined: Mar 2003
Posts: 916
SE Washington
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I'm looking for opinions. We have a 440 in my wife's duster that is drag race use only. It has the ProMaxx heads. I think they are a copy of a Edelbrock RPM? Either way we have ran the motor for 2 seasons with stock rocker arms and push rods. It has a Launati Voodoo hydraulic flat tappet cam with .533 lift. It ended up bending a pushrod and breaking the adjacent rocker arm at the last race this year. So it's time for an upgrade.
Originally I was thinking of the chromoly comp rockers but the max spring diameter is much less than Harland Sharps. I'm open to anyones thoughts or suggestions. I would look into the rockers Mancini is selling. Made by Harland Sharp, lifetime warranty, under 500 bucks. Buddy runs the small block versions of them on his trick flow heads and really likes them. Great bang for the buck https://www.manciniracing.com/ben15alro.html Thats interesting...wonder what the difference is? The adjusters? Actual Harland Sharps are nearly double the cost...
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Re: help me pick rockers for 440
[Re: Stanton]
#2846260
11/14/20 08:07 PM
11/14/20 08:07 PM
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Joined: Jan 2003
Posts: 11,786 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,786
Portage,michigan
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The "difference" is the Harland Sharps that everyone else sells have roller bearings for the shafts whereas the "Mancini" Harland Sharps are bored aluminum like every other aluminum rocker on the market. Hence the price difference. Yep. Still nice for the money,American made, and lifetime warranty
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car Best so far, 10.32 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: help me pick rockers for 440
[Re: Stanton]
#2846620
11/15/20 03:16 PM
11/15/20 03:16 PM
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Joined: Dec 2004
Posts: 10,607 Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,607
Rittman Ohio
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The "difference" is the Harland Sharps that everyone else sells have roller bearings for the shafts whereas the "Mancini" Harland Sharps are bored aluminum like every other aluminum rocker on the market. Hence the price difference. The early pics of those rocker arms showed bushing installed So they are not bushed that is a disappointment as I was considering them . Gus
Last edited by fourgearsavoy; 11/15/20 03:16 PM.
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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Re: help me pick rockers for 440
[Re: AndyF]
#2850687
11/23/20 08:32 PM
11/23/20 08:32 PM
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Joined: Mar 2003
Posts: 916 SE Washington
Forest
OP
super stock
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OP
super stock
Joined: Mar 2003
Posts: 916
SE Washington
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Crane or Comp? We have used the Comp rocker arms on a lot of engines. They work fine with flat tappet or a street roller type cam and generally last a long time. oops yea Comp...
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Re: help me pick rockers for 440
[Re: fourgearsavoy]
#2850868
11/24/20 10:32 AM
11/24/20 10:32 AM
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Joined: Nov 2004
Posts: 3,547 Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,547
Syracuse,NY
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So a little " backstory" on the HS non bushed rocker arms. Back when Crane was sold, and the new owners were clearly not interested in making rocker arms again, I thought that there should be a replacement for them, as they were a great little rocker arm, and nothing else really fit the bill in that price range. So, I started working on a HS rocker arm, non bushed, to fill that gap. I worked with them, to use a BBC rocker arm, that was drilled out, as that would be the most cost effective. I have the prototypes still in my shop. The first version, ended up being too short for the valve tip alignment. ( this project probably went on for 4-6 months). So, I was working at changing that distance, and at the same time. getting HS to make their standard rocker arm axle to fit an Edelbrock head properly. I determined it had to be moved .070. That was a done deal and we started selling the " E" version of that rocker. At that time, everyone just " lived with" the length being wrong. I wanted to fix that. Back to the unbushed rocker arm. " Somehow" ( still dont know why), my unbushed rocker design, made it to Mancini .Next thing I know, they had ordered 100 sets or something like that, and I was effectively out of that market. I didnt have the coin to pony up for that kind of investment in one series of rocker. I will post a pic of the original prototypes next trip to the shop.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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