Is 482 on a Dynojet good?
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From: Portland Oregon
Is 482 on a Dynojet good? My first time on a chassis dyno today made 482 RWHP on a Dyno Jet.
Is that a good number? The dyno guy is old school with a ton of experience, he was impressed. I was happy with it.
377, SD tuned, FAST 90, LS6 GM CNC heads, Diamond flat top pistons, TSP 233/239 .600/.603 cam, headers, high flow cats, and Borla Turbo muffflers.
Does anyone know how much power is lost from a C5 drivetrain? What would that motor do on a engine dyno.
Is that a good number? The dyno guy is old school with a ton of experience, he was impressed. I was happy with it.
377, SD tuned, FAST 90, LS6 GM CNC heads, Diamond flat top pistons, TSP 233/239 .600/.603 cam, headers, high flow cats, and Borla Turbo muffflers.
Does anyone know how much power is lost from a C5 drivetrain? What would that motor do on a engine dyno.
Thread Starter
TECH Resident
Joined: Aug 2004
Posts: 875
Likes: 2
From: Portland Oregon
Dynamic Compression is 7.99, that's with a .053 gasket, flat tops with 2.7cc valve pockets. Static is 10.6. I really wanted to keep this one low because my last motor with 8.9 dynamic was knock crazy.
Depends,I've been on dyno jets that gave me 30hp over a mustang dyno with no mod changes. go to the track and look at the mph vs weight of the car. that will tell you more. Nice numbers tho.
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that's pretty good but it could be better, but depends on the fuel u run. 8.5 DCR is premo for 91 octane. if u have the PTV clearance then I'd get a thinner gasket or mill the heads to get it. if u have to, flycut the pistons to gain that extra .5 DCR if it doesn't clear. pretty sure u'd be over 500rwhp if u did that. SCR doesn't matter unless ur running boost. DCR is what counts to make max hp on NA. 8.9 DCR is fine if u were running more octane....MAYBE if u were running 93 but def needed some more octane, 91 mixed with a lil 100 would have worked. what kind of fuel were u running on ur 8.9 DCR?
btw...what was the weather likewhen u did that dyno and what's ur alt?
really good setup, can't go wrong with a L92 and a "smaller" cam
btw...what was the weather likewhen u did that dyno and what's ur alt?
really good setup, can't go wrong with a L92 and a "smaller" cam
Last edited by Screamin_Z; Jul 28, 2009 at 01:04 AM.
Thread Starter
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Joined: Aug 2004
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From: Portland Oregon
91 mixed with a lil 100 would have worked. what kind of fuel were u running on ur 8.9 DCR?
I tried that same setup with an .040 gasket with the same results. The 8.9 just did not work for me.
I am running 28 degrees with the new L92, and pump gas, DCR 7.99 could not be happier, no knocks yet, have not been on the track. I am going to try more timing to see what the limit is. It was 85 degrees when we hit the dyno, the number on the text page is 478, on the graph it shows 482 (corrected ?)
