ANYONE have good results from the Steed Speed Manifolds yet?

08BIGRIG · Oct 11, 2012

blk350on20s said:
Someone send him a set of 6.0 manis and pipes. Sucks to see all the hard work done and no payout. Manifolds are a nightmare and i wish them on no man lol. 6.0s were tough. I can only imagine the beefiness of a SS. Hopefully the engine dyno gets both an old set and revised set of SS.

That would be awesome. No BS it was a lot of work forsure.

e.nickkk · Oct 11, 2012

I have a set of stock 6.0 manis if your wanting them for the cause

08BIGRIG · Oct 12, 2012

As the new manifolds will be sent out soon here for testing, please keep us updated on the new design and how they do. Wish Leen the best with these.

steedspeed · Oct 12, 2012

Several sets delivered today. We shall see what they are worth very soon.

e.nickkk · Oct 12, 2012

Who did you send them to for testing

lusklxix · Oct 19, 2012

Has anything been said yet about refund or product replacement for the guys who bought these prior to the facts being stated in this thread? I kinda feel like I've been screwed out of $1000

08BIGRIG · Oct 19, 2012

Just call Leen at Steed Speed if you bought them from him or you have to return them to whomever you bought them and then Steed Speed will refund them. That is what I was told directly from Leen at Steed Speed.

bigrpowr · Oct 19, 2012

Swapping back to my 6.0's next week.

08BIGRIG · Oct 19, 2012

I am swapping back in two weeks as well to 6.0 maninfolds and Elite up pipes. I will be VERY happy to have the power back as well as quick spool up.

Tree Trimmer · Oct 19, 2012

kinda off topic, but.

other than where the bend/flange is, whats the benefit of the 6.0 manifolds?

are they that much better than stock?

Dzchey21 · Oct 19, 2012

Yep there was a thread with pictures comparing them... Way better.

Tree Trimmer · Oct 19, 2012

i dont suppose you could wave your magic mod-wand and send me a link? im not finding it.

Hotrodtractor · Oct 19, 2012

Dzchey21 said:
Yep there was a thread with pictures comparing them... Way better.

I'm going to play Devil's advocate for a moment....

Is there a dyno comparison just swapping the 6.4 manifolds out for some 6.0 manifolds? I'm sure they look better - but this thread so far proves that looks don't make power. I don't doubt that they do add ponies - but before this thread I would have thought the Steed Speed units would have done the same as well...

08BIGRIG · Oct 19, 2012

No one to date as far as anyone knows has done a back to back test between stock 6.4 manifolds and 6.0 manifolds. Someone please correct me if I am wrong as I would love to see this as well. I may consider doing a test when I get my 6.0 up pipes from Elite soon.

bigrpowr · Oct 19, 2012

08BIGRIG said:
No one to date as far as anyone knows has done a back to back test between stock 6.4 manifolds and 6.0 manifolds. Someone please correct me if I am wrong as I would love to see this as well. I may consider doing a test when I get my 6.0 up pipes from Elite soon.

Both Tadd and I were talking about your test the other day , thinking the same thing. He thinks the reason you didn't see so much of a peak power loss was because you came from a bit more inferior manifold. I only swapped to 6.0 manifolds because I thought there was a performance gain, but because the casting was safer at high egt. Just Dyno again after you swap and that will be another test. But Tadd does feel the 6.4 manifolds are weak compared.

gman1 · Oct 20, 2012

Dzchey21 said:
Yep there was a thread with pictures comparing them... Way better.

Tree Trimmer said:
i dont suppose you could wave your magic mod-wand and send me a link? im not finding it.

Found it.
http://powerstrokenation.com/forums/showpost.php?p=1296693&postcount=26

Tree Trimmer · Oct 20, 2012

thank you.

Dzchey21 · Oct 20, 2012

Thanks for finding that...psn...lol

Midweststroker · Oct 28, 2012

Finished our Woodstock build last week. 2010 F350 Tow Power Plus, host of other mods, including the third version of Steed Speeds. I cannot offer any before and after horse power numbers, but i can offer a testimonial to the quality and customer service. I pulled two classes last night at the RCD pull, work stock and 2.6. The manifolds and up pipes were super red both hooks. While the modified factory up pipes didn't survive the event, the manifolds did great. Already got a call from Leen to make sure all went well. I have the third version of these manifolds, compared to the factory 6.4 or 6.0 that I have, these cannot possibly NOT perform better. The turbos do spool almost instantly and make exceptional boost. I am not on here to make any substantiated claims, just a testimonial to my satisfaction to product quality and customer service.

bigrpowr · Oct 28, 2012

Midweststroker said:
Finished our Woodstock build last week. 2010 F350 Tow Power Plus, host of other mods, including the third version of Steed Speeds. I cannot offer any before and after horse power numbers, but i can offer a testimonial to the quality and customer service. I pulled two classes last night at the RCD pull, work stock and 2.6. The manifolds and up pipes were super red both hooks. While the modified factory up pipes didn't survive the event, the manifolds did great. Already got a call from Leen to make sure all went well. I have the third version of these manifolds, compared to the factory 6.4 or 6.0 that I have, these cannot possibly NOT perform better. The turbos do spool almost instantly and make exceptional boost. I am not on here to make any substantiated claims, just a testimonial to my satisfaction to product quality and customer service.

I would say if the spool up is good , that they are working.