Speedmaster (ProComp) 6.605 5140 Rods
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BBFTorino
dfree383
Mark O'Neal
Paul Kane
Doxnoogle
rmcomprandy
bbfguy1
11 posters
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Speedmaster (ProComp) 6.605 5140 Rods
Was wondering if anyone had any experience with these rods, and would they be an upgrade to a reconditioned broached rod with ARP hardware, or just a lateral move in terms of strength. They are a 5140 forging with a press pin small end. Competition products has them for $249.00 a set.
https://www.competitionproducts.com/Speedmaster-5140-Forged-I-Beam-Rods-Ford-460-6605-Press-Pin/productinfo/SPM274-1119/
https://www.competitionproducts.com/Speedmaster-5140-Forged-I-Beam-Rods-Ford-460-6605-Press-Pin/productinfo/SPM274-1119/
bbfguy1- Posts : 59
Join date : 2009-09-14
Re: Speedmaster (ProComp) 6.605 5140 Rods
bbfguy1 wrote:Was wondering if anyone had any experience with these rods, and would they be an upgrade to a reconditioned broached rod with ARP hardware, or just a lateral move in terms of strength. They are a 5140 forging with a press pin small end. Competition products has them for $249.00 a set.
https://www.competitionproducts.com/Speedmaster-5140-Forged-I-Beam-Rods-Ford-460-6605-Press-Pin/productinfo/SPM274-1119/
From Pro-Comp, if they have no moving parts and are of better material, they should be OK as an improvement over O.E.M.
Mark Miller likes this post
Re: Speedmaster (ProComp) 6.605 5140 Rods
Was trying to figure out why theyre almost $200 cheaper than summit, but those are press pin, ones on summit are floaters.
Doxnoogle- Posts : 36
Join date : 2022-07-30
Re: Speedmaster (ProComp) 6.605 5140 Rods
These con rods are an upgrade from the OEM 6.605" con rods and are a great alternative to refurbishing the OEM rods. The are not only fine with OEM-style rebuilder pistons to 500 HP, but you can use them with aftermarket forged pistons (which are usually 150-200 grams lighter in mass) to about 600 HP in a well planned combo.bbfguy1 wrote:Was wondering if anyone had any experience with these rods, and would they be an upgrade to a reconditioned broached rod with ARP hardware, or just a lateral move in terms of strength. They are a 5140 forging with a press pin small end. Competition products has them for $249.00 a set.
https://www.competitionproducts.com/Speedmaster-5140-Forged-I-Beam-Rods-Ford-460-6605-Press-Pin/productinfo/SPM274-1119/
My belief is that if they were produced in larger quantities then they might be priced even lower; nonetheless in properly suited applications they are still a good value at their current price point.
Re: Speedmaster (ProComp) 6.605 5140 Rods
They're okay...but watch the bolts. They can do add things with the bolts.
They've been around for decades, under other names.
They've been around for decades, under other names.
Mark O'Neal- Posts : 286
Join date : 2009-08-12
Re: Speedmaster (ProComp) 6.605 5140 Rods
Typical the machine work is all over the board with them and I’d be suspect of the bolts.
dfree383- BBF CONTRIBUTOR
- Posts : 14841
Join date : 2009-07-09
Location : Home Wif Da Wife.....
Re: Speedmaster (ProComp) 6.605 5140 Rods
I would replace the bolts with the ARP upgraded bolts, regardless!!
BBFTorino- Posts : 998
Join date : 2015-12-31
Re: Speedmaster (ProComp) 6.605 5140 Rods
Not true about the machine work--have you ever measured a set? Every single set that I've personally measured I've found to be within spec on both the big end and also the small end, and just as consistent as a set of brand new Scat rods....and frankly, they measure better than other big name name rods that I've measured. (As for the bolts, see my thoughts on that below.)dfree383 wrote:Typical the machine work is all over the board with them and I’d be suspect of the bolts.
Mark Miller likes this post
Re: Speedmaster (ProComp) 6.605 5140 Rods
For a 500 HP 460 build? Or even a 600 HP 460 build with the lighter piston/pin combo? In this application a $100+ ARP rod bolt upgrade on a $250 set of brand new rods might bring piece of mind, but consider that even the FoMoco OEM 3/8" bolts in the stock BBF rods hold up better than the OEM rods themselves. So, it's the OEM rods that need greater structural upgrading than do the rod bolts. That being said, the supplied bolts in these aftermarket rods might not be ARPs but they are up to the service duty asked of them.BBFTorino wrote:I would replace the bolts with the ARP upgraded bolts, regardless!!
Mark Miller and Doxnoogle like this post
Re: Speedmaster (ProComp) 6.605 5140 Rods
I think it might be interesting to bring a few different brands of similarly spec'd con rod bolts to an Instron Machine and see where things really are these days. Maybe pull a full set of each brand to really get good sample/amount of data. I actually might be able to get this done for little more than the cost of the bolts and will look into itMark O'Neal wrote:They're okay...but watch the bolts. They can do add things with the bolts.
They've been around for decades, under other names.
One thing for sure: if the brown box bolts were failing all over the world in those rods then it would be all over the internet
stanger68 likes this post
Re: Speedmaster (ProComp) 6.605 5140 Rods
Paul Kane wrote:Not true about the machine work--have you ever measured a set? Every single set that I've personally measured I've found to be within spec on both the big end and also the small end, and just as consistent as a set of brand new Scat rods....and frankly, they measure better than other big name name rods that I've measured. (As for the bolts, see my thoughts on that below.)dfree383 wrote:Typical the machine work is all over the board with them and I’d be suspect of the bolts.
I measured a number of sets early on and they where horrible never bothered wasting my time again with them
dfree383- BBF CONTRIBUTOR
- Posts : 14841
Join date : 2009-07-09
Location : Home Wif Da Wife.....
Doxnoogle likes this post
Re: Speedmaster (ProComp) 6.605 5140 Rods
[quote="Paul Kane"]
Was my assumption as well.
Mark O'Neal wrote:
One thing for sure: if the brown box bolts were failing all over the world in those rods then it would be all over the internet
Was my assumption as well.
Doxnoogle- Posts : 36
Join date : 2022-07-30
Re: Speedmaster (ProComp) 6.605 5140 Rods
Paul Kane wrote:For a 500 HP 460 build? Or even a 600 HP 460 build with the lighter piston/pin combo? In this application a $100+ ARP rod bolt upgrade on a $250 set of brand new rods might bring piece of mind, but consider that even the FoMoco OEM 3/8" bolts in the stock BBF rods hold up better than the OEM rods themselves. So, it's the OEM rods that need greater structural upgrading than do the rod bolts. That being said, the supplied bolts in these aftermarket rods might not be ARPs but they are up to the service duty asked of them.BBFTorino wrote:I would replace the bolts with the ARP upgraded bolts, regardless!!
Well, yeah I get that. Not wanting to spend more money than necessary. But I also take into account, the cost of the other parts that may get damaged if one of these cheapie's lets go...like block, crank, pan, and camshaft.
BBFTorino- Posts : 998
Join date : 2015-12-31
Re: Speedmaster (ProComp) 6.605 5140 Rods
True enough, and everyone has different ideas and levels of halfassery they can live with. Ill speak from my position, as i think its well suited here. I want a 500hp straight budget build, less a power goal, more a "as much as i can for as little as i can". Only reason im approaching it that way is i fully intend to build a nice forged bottom end 500+ mill down the road, funds just dont allow it now. My thinking is, why spend money now, when i can put it towards later. In such a build im not running $1500 worth of roller cam and gear, im not running even cheap aluminum heads, i am running the cheapest forged pistons i can lay hands on. If it works, dollar per hp and smiles per buck is as high as it gets, if it blows up and its all trashed, im out $1500. Rod bolts are more than 10% the cost at the point. They claim to come with ARP, idk if they are or are 8430 knockoffs, but they seem to do the job for the average enthusiast who buys them, and the occasional hot rodder that runs them far beyond their intended application.
Doxnoogle- Posts : 36
Join date : 2022-07-30
Rods
You know Dox just go with these rods and most likely all will be good .At least everyone will be off your back with the old stock rods issue.Doug
manofmerc- BBF CONTRIBUTOR
- Posts : 562
Join date : 2011-03-31
Mark Miller and Doxnoogle like this post
Re: Speedmaster (ProComp) 6.605 5140 Rods
For the sake of conversation what is the consensus on the Eagle SIR I beams. They were already in the motor I just built. But I am worried about them. Forged RaceTech piston, 7000rpm 600crank horsepower.
nedceifus- Posts : 118
Join date : 2019-07-31
Age : 48
Location : Nebraska
Re: Speedmaster (ProComp) 6.605 5140 Rods
nedceifus wrote:For the sake of conversation what is the consensus on the Eagle SIR I beams. They were already in the motor I just built. But I am worried about them. Forged RaceTech piston, 7000rpm 600crank horsepower.
Other than being heavy, they seem to be OK.
5140 material is better than O.E.M. but, not as strong as 4340.
Mark Miller and nedceifus like this post
Re: Speedmaster (ProComp) 6.605 5140 Rods
I thought the internet hp rating on stock rods was about the same as what you’re rating the Procomps at. I remember 600hp 6000rpm being the rule of thumb.
I snapped a stock rod probably 10 years ago on an l2404 piston 466 that was sprayed every weekend for at least 5 years and 1000s of street miles. I have the same basic combo again with stock rods/l2404 pistons and it’s even faster now but I don’t spray it nearly as often in fear of wrecking a good running back up motor. So would the Procomp rods extend the life of this motor or does it basically needs a good rod/light piston to live? I’d guess it makes 550 crank and I’ve sprayed it a few times with a 90 jet on pump gas.
I snapped a stock rod probably 10 years ago on an l2404 piston 466 that was sprayed every weekend for at least 5 years and 1000s of street miles. I have the same basic combo again with stock rods/l2404 pistons and it’s even faster now but I don’t spray it nearly as often in fear of wrecking a good running back up motor. So would the Procomp rods extend the life of this motor or does it basically needs a good rod/light piston to live? I’d guess it makes 550 crank and I’ve sprayed it a few times with a 90 jet on pump gas.
droppedf100- Posts : 176
Join date : 2009-09-28
Location : South Jersey
Mark Miller likes this post
Re: Speedmaster (ProComp) 6.605 5140 Rods
Does it look like this?bbfguy1 wrote:Was wondering if anyone had any experience with these rods, and would they be an upgrade to a reconditioned broached rod with ARP hardware, or just a lateral move in terms of strength. They are a 5140 forging with a press pin small end. Competition products has them for $249.00 a set.
https://www.competitionproducts.com/Speedmaster-5140-Forged-I-Beam-Rods-Ford-460-6605-Press-Pin/productinfo/SPM274-1119/
Scott Foxwell- Posts : 419
Join date : 2011-06-23
Age : 66
Location : E Tennessee
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