Numbers are awfully low after tune...what's the deal??
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Numbers are awfully low after tune...what's the deal??
I just recently rebuilt my motor (LS1) and I sent it to Kaltech in Long Island to get tuned. After tuning it on the dyno Brian told me it only put down 385 rwhp. Here is a list of my modifications and let me know if you also think that number is way too low. I don't know what kind of dyno he has or how good his tunes are but if anyone else had their car there tell me what you think:
[LS1 Motor]
- LS7 Lifters
- Crane Pushrods
- Patriot Gold Springs
- TSP 233/239 Cam
- TSP True Dual Exhaust w/ Dynomax Bullet mufflers
- Pacesetter Long Tube Headers
- FAST 92mm tb
- FAST 92 Intake Manifold
- 42 lb injectors
- Casting #799 Heads (stock)
- Stock Rear
- T56 Transmission
[LS1 Motor]
- LS7 Lifters
- Crane Pushrods
- Patriot Gold Springs
- TSP 233/239 Cam
- TSP True Dual Exhaust w/ Dynomax Bullet mufflers
- Pacesetter Long Tube Headers
- FAST 92mm tb
- FAST 92 Intake Manifold
- 42 lb injectors
- Casting #799 Heads (stock)
- Stock Rear
- T56 Transmission
Last edited by kobraa; 06-15-2010 at 04:13 PM.
#2
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auto or manual? 10 bolt or 12 bolt? underdrive pulley? lid? are the heads ported/ milled/ valve job? stock head gasket?
are those numbers standard or sae corrected?
they aren't horrible depending on the above questions...this would be better suited for the dyno section too I would think
are those numbers standard or sae corrected?
they aren't horrible depending on the above questions...this would be better suited for the dyno section too I would think
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6 speed manual. Stock rear. MLS Head Gaskets. The heads are not milled and are the same as 243 heads. Stock Lid. I just think for that set up I should be making at least 415rwhp.
Last edited by kobraa; 06-15-2010 at 04:11 PM.
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yea thats low i put down 390rwhp cam only on that same dyno i would think with a set of ok heads and a fast you would be over me hes a good tuner so its not the tune he knows what hes doing where are you located on the island i would be happy to run you to see if its running good he has a mustang dyno it reads a low i put down 415rwhp on a dynojet
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yea thats low i put down 390rwhp cam only on that same dyno i would think with a set of ok heads and a fast you would be over me hes a good tuner so its not the tune he knows what hes doing where are you located on the island i would be happy to run you to see if its running good he has a mustang dyno it reads a low i put down 415rwhp on a dynojet
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I have a BIG H/C setup, full boltons, exhaust, UD pulley, double roller timing chain, whole fuel system is redone; pump, injectors, rails, etc.. and I only put down 410 at Kaltech.
Not to mention he moved my throttle cable to the higher position (WAY too much slack) and my full throttle was actually like 3/4. I saw your car there.
Not to mention he moved my throttle cable to the higher position (WAY too much slack) and my full throttle was actually like 3/4. I saw your car there.
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Haha yeah...thats the first time I have seen my car in almost 2 months. Thanks for the picture! Yeah i dk I hope its just his dyno thats reading a little low because for my set up I expected alot more power.
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After some researching....
"if the heads are off of an LS6 and have the lighter valves, then yes stock length. But if they are 243 castings off a 6.0 then they have regular valves and will need a longer pushrod to keep the geometry correct The valves stems are longer on the lightweight LS6 valves to make up for the reduced base circle of the LS6 cam."
"My understanding is that the 799 head is the same head as the LS6 243 head. If I remember the history correctly, the 243 was the initial head for the LS6 and made in Canada. The 799 head is possibly made in Mexico and used on 2007 and later LS2s??"
Just an idea...
I would check pushrod length
"if the heads are off of an LS6 and have the lighter valves, then yes stock length. But if they are 243 castings off a 6.0 then they have regular valves and will need a longer pushrod to keep the geometry correct The valves stems are longer on the lightweight LS6 valves to make up for the reduced base circle of the LS6 cam."
"My understanding is that the 799 head is the same head as the LS6 243 head. If I remember the history correctly, the 243 was the initial head for the LS6 and made in Canada. The 799 head is possibly made in Mexico and used on 2007 and later LS2s??"
Just an idea...
I would check pushrod length
#20
i believe the 799s were also used on some 5.3 trucks. regardless, i think pushrod length needs to be checked since ls7 lifters are being used. if they are too short, its the equivalent of running a much smaller cam which would explain being down on power.