Duramax Diesels Forum Truck of the Week
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Old 10-19-2018, 01:32 PM
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Default S&S street fighter engine dynoed

Whatís everyone think about this? They seem pretty happy according to their instagram posts. Made 1250hp 18xx torque on an engine dyno after 78 runs they cracked a piston.

How long is an engine dyno pull 10/20 seconds. So their motor lasted 13-26 minutes at power, very few of those being over 1000hp


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Last edited by gmduramax; 10-19-2018 at 01:37 PM.
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Old 10-19-2018, 01:43 PM
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How many chassis pulls would it have made?
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Old 10-19-2018, 01:51 PM
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Originally Posted by Mike L. View Post
How many chassis pulls would it have made?
Not sure but I sure as hell wouldnít pay $10,000 to find out
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Old 10-19-2018, 01:51 PM
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I guess it depends on what pistons were used. I get the impression that is a street motor which means they're probably cast pistons. I don't see a problem with that. Probably would have been over 1000, or close to it, on a chassis dyno.

Edit: so I just looked up the Wagler Streetfighter rotating assembly. They're listing it as a 1000 HP rotating assembly (which most people are talking about at the tire rather than crank). There's no way I would sell a set of stock replacement/delipped pistons for an engine pushing 1000 hp. Why not at least step up to the Mahle Motorsports race cast?
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Old 10-19-2018, 01:53 PM
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I guess it depends on what pistons were used. I get the impression that is a street motor which means they're probably cast pistons. I don't see a problem with that. Probably would have been over 1000, or close to it, on a chassis dyno.
Mahle Motorsports. Same thatís in my truck thatís made 100ís of 1000whp passes.
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Old 10-19-2018, 01:59 PM
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Quote:
Originally Posted by gmduramax View Post
Mahle Motorsports. Same thatís in my truck thatís made 100ís of 1000whp passes.
See my edit. They're delipped stock replacement pistons. That's pretty lame.
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Old 10-19-2018, 02:14 PM
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Quote:
Originally Posted by JoshH View Post
See my edit. They're delipped stock replacement pistons. That's pretty lame.
I could have sworn they said mahle Motorsports. Theyíre claiming itís an 800hp motor to the crank. Iíd rather roll the dice with a factory lly short block.
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Old 10-19-2018, 02:15 PM
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That is a disappointment in my opinion. On a chassis dyno or a track that engine would not last long. Never had a wagler part impress me yet other then the twisted pedestal and intake. Just like the whole DX crap. It's cool revving in parking lots but it doesnt work at the track.
It's hard to beat the fingers pistons. 3 years of hell on mine and they look great.
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Old 10-19-2018, 08:06 PM
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Their Mahle race cast pistons are in their competition street engines on their website rated to 1000hp. Anything over they have it listed as a forged Ross piston option. If I recall 1000hp is still a rough limit for the race cast as well isn’t it ?
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Old 10-19-2018, 09:15 PM
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Their Mahle race cast pistons are in their competition street engines on their website rated to 1000hp. Anything over they have it listed as a forged Ross piston option. If I recall 1000hp is still a rough limit for the race cast as well isnít it ?
Their ratings are at the crank. So 800ish at the tires
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Old 10-20-2018, 04:30 AM
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Silly not to use a fingers cast piston for a 1000hp build imo. We use them even at 1200hp
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Old 10-20-2018, 08:43 AM
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Why so much hate? For an entry level budget build rotating assembly I donít think itís that bad. This is for guys not looking to make 1000+ rwhp. More for your dd guy wanting that 600-800 rwhp. IMO I think thats pretty damn good and cool that they tested it to find the limit not many do that. I would put it in my truck.


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Old 10-20-2018, 09:46 AM
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Originally Posted by 20dmax08 View Post
Why so much hate? For an entry level budget build rotating assembly I donít think itís that bad. This is for guys not looking to make 1000+ rwhp. More for your dd guy wanting that 600-800 rwhp. IMO I think thats pretty damn good and cool that they tested it to find the limit not many do that. I would put it in my truck.


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They said on instagram its rated for 800hp at the crank. Thatís about 680 to the tires for 10k. My stock lmm short block made it 500ish passes in the 500-660whp range until it cracked a piston. Is that 10k worth spending?
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Old 10-20-2018, 09:51 AM
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I honestly think it's a good deal. How much would you have in stock replacement parts for sn over haul?
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Old 10-20-2018, 09:55 AM
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Quote:
Originally Posted by gmduramax View Post
They said on instagram its rated for 800hp at the crank. Thatís about 680 to the tires for 10k. My stock lmm short block made it 500ish passes in the 500-660whp range until it cracked a piston. Is that 10k worth spending?


Was rated at that before they did this testing. Go on their website. Now rated at 1000hp. 10k? $5175 also on their website. Not sure where you got 10k???


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