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Basic NA build, what am I missing?

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Old Oct 22, 2016 | 02:52 AM
  #1  
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Default Basic NA build, what am I missing?

Car is a 99 Vert, manual, 26k miles
Mods so far:

XS Power long tube headers
TSP 228r cam (228/228/.600/.600/112 LSA)
Blackwing air filter
160* thermostat
25% U/D pulley

Car dynoed at 380 rwhp, 362 ft/lbs

Next I would like to port my throttle body, get an LS6 intake manifold, and a pair of PRC stage 2.5 5.3 liter heads.

What else can I add that would add power?
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Old Oct 22, 2016 | 08:10 AM
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Supercharger ????
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Old Oct 22, 2016 | 09:22 AM
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Maybe a cold air intake and put some money aside to upgrade your clutch.
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Old Oct 22, 2016 | 09:50 AM
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When you replace the heads, you'll need a better intake manifold than the LS6 unit and you will need an LS2 throttle body to allow the engine to breathe properly. A FAST 92 intake would be a good choice - a ported FAST 92 would be an even better choice. You'll most likely need new injectors too!
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Old Oct 22, 2016 | 10:23 AM
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Originally Posted by tbrowne
When you replace the heads, you'll need a better intake manifold than the LS6 unit and you will need an LS2 throttle body to allow the engine to breathe properly. A FAST 92 intake would be a good choice - a ported FAST 92 would be an even better choice. You'll most likely need new injectors too!
I have read and seen videos that mention at the power levels he's at, a Fast 92 is not really a great idea. Until you are pulling more air than the TB can flow, increasing the size of it actually does a dis-service to the drivability. Might be ok for top end but makes the tune more finicky.

If it were me I'd stick with the LS6 intake and a nicer set of heads. 243/799, etc. Porting would be a good idea too.
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Old Oct 22, 2016 | 01:49 PM
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I would do A/I heads (243) or the MMS as cast heads. Agree on the cold air intake and the clutch. When I did my heads/cam, the clutch wouldn't hold on the dyno. What a pain. And careful being too aggressive from a standing start or you will be looking for rear/transmission parts too.
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Old Oct 23, 2016 | 09:00 AM
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Trickflow heads.
MSD intake.
LS2 throttle body.
Vararam.
Injectors.
Gears.
Clutch.
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Old Oct 23, 2016 | 10:08 AM
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Car is a 99 Vert, manual, 26k miles
Mods so far:

XS Power long tube headers
TSP 228r cam (228/228/.600/.600/112 LSA)
Blackwing air filter i would buy either the callaway or the vararan intake myself
160* thermostat i would skip that on a n/a build really no reason to have it
25% U/D pulley
get a ls6 intake with throttle body combo
243 heads , make sure you do the upgrade on your valve train as well



i would add the rear steam port's as well...

Car dynoed at 380 rwhp, 362 ft/lbs

Next I would like to port my throttle body, get an LS6 intake manifold, and a pair of PRC stage 2.5 5.3 liter heads.

What else can I add that would add power?
Reply

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