expected more from my set-up
10-28-2007, 06:24 PM
#1
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expected more from my set-up 
I put my car on the dyno yesterday, I was hoping for 400 hp/390ish tq. My mods are:
220/224 114 lsa cam
stage 2 patriot heads
Crane 1.8 rockers
crane push rods
double roller timing set
melling oil pump
stock ls6 intake
bbk 80mm tb
headers, y pipe, cat back....
160 t-stat
That about sums it up, what do you guys think?
10-28-2007, 07:28 PM
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I haven't changed anything besides converting to speed density. But it feels like it slightly gained after the tune. It does have a decent torque curve
Last edited by krobinson123; 10-28-2007 at 07:34 PM.
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10-30-2007, 07:17 AM
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i guess your right, it is a dynojet. when the previous owner was having the car built it was meant to be procharged. I'm not sure how much timing...
10-30-2007, 08:24 AM
#13
The A/F doesnt look like its tuned for NA. And if you dont know what the timing is, how can you make that assumption? It could be 19 degrees, when it may want 28 degrees.
The A/F doesnt look rich enough for FI but too rich for NA. It should flat line at 13:1. See where it starts to dip, right about peak HP?
Taking a little bit of fuel out of it, combined with getting the timing where it wants to be, hell you could be looking at 15-20 hp.
The A/F doesnt look rich enough for FI but too rich for NA. It should flat line at 13:1. See where it starts to dip, right about peak HP?
Taking a little bit of fuel out of it, combined with getting the timing where it wants to be, hell you could be looking at 15-20 hp.
10-30-2007, 05:59 PM
#15
Is that a Crane or VHP cam? I am running a smaller VHP cam with Dart 205 heads, Crane 1.7 rockers and when I had the LS6 intake I made 393 in a Vette which usually do less than an f-body on the dyno. I would say re-visit the tune a bit. The curves look nice and smooth so it does not appear that there is some type of major issue or anything wrong.
i agree with above, get a fast 90
10-30-2007, 09:13 PM
#19
I have tuned quite a few setups with Patriot heads, and 3 out 4 folks expect more. I don't know what the deal is with them, but they very seldom make GOOD power. That's the rub of a budget head in most cases. At any rate, I would expect 400-415rwhp with that setup based on similar setups on a dynojet.
10-31-2007, 09:56 AM
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I have tuned quite a few setups with Patriot heads, and 3 out 4 folks expect more. I don't know what the deal is with them, but they very seldom make GOOD power. That's the rub of a budget head in most cases. At any rate, I would expect 400-415rwhp with that setup based on similar setups on a dynojet.