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Discussion Starter · #1 ·
Is it possible to get 500 whp n/a from a 2008 TBSS AWD with all the bolt-ons (stock block but with aftermarket heads & cam)? Is there a recipe for this without nitrous or boost?
 

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500 whp AWD?
 

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You said stock block, but are we talking a completely stock bottom end?
 

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keep in mind the ALL stock motor is 395 hp at the flywheel. Getting 500 hp to the hubs may require a supercharger at best. I am just guessing though. Waiting for others to chime in as my mechanic suggested loosening up the drive chain before slapping on a Maggie. I'm curious too
 

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TrailblazerSS
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keep in mind the ALL stock motor is 395 hp at the flywheel. Getting 500 hp to the hubs may require a supercharger at best. I am just guessing though. Waiting for others to chime in as my mechanic suggested loosening up the drive chain before slapping on a Maggie. I'm curious too
Can you elaborate on why your mechanic recommends loosening up the drive chain before installing a Maggie?

If someone has done this recommended mod please chime in also.
 

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Discussion Starter · #8 ·
Have already upgraded transmission internals along with super servos, external transmission cooler, 3600 Yank converter, long tube headers, JBA cat-back,160 t-stat, oil catch can, underdrive pulley. Build rough draft worked up on paper is as follows:

  • PCM of NC Attitude V3 Cam 225/235, .61x/.62x, @ .050", 113 LSA
  • PRC As-Cast 225cc LS1/LS2 Cathedral Heads - Stainless Steel Intake/Exhaust Valves - No Springs - 62cc Small Bore Chamber - Includes all machine work (Part #: 199-AsCast)
  • Brian Tooley Racing valve spring set for L83/L86/LT1 engines using stock rocker arm ratio - spring specifications: 55lbs at 1.780″, 380lbs at 1.180″, 400lbs at 1.130, coil bind at 1.070″ - includes: (16) .660″ lift Platinum dual valve springs (part number SP001-1), (1) titanium retainers for Gen-V L83/L86/LT1 cylinder heads (part number SR008-16), (1) spring locators (part number SL505060-16), (1) LSx blue valve guide seal kit (part number VS LS KIT), (1) LSx valve 7° valve locks (part number VL7°8MM-32), (1) .015" shims for stock valve guides (part number SS015-16) (Part #: SK007/0560/BL)
  • COMP Cams Hi-Tech chromoly pushrods - heat-treated - 5/16" diameter - 7.400" length - set of 16 (Part #: 7955-16)
  • OEM GM rocker arm bolt for LSx engines (aside from LS7, LS9, and GMPP LSX) - quantity of 16 required per engine (Part #: 12560961)
  • Smith Brother's bronze bushing trunnion bearing upgrade for LSx and LTx engines - includes: 16 micro-polished hardened shafts, 32 C932 bearing bronze bushings (Part #: SBLST-KIT)
  • OEM GM camshaft retainer plate for 1997-2021 LSx, LTx, and LVx engines (Part #: 12589016)
  • OEM GM camshaft retainer plate for 1997-2021 LSx, LTx, and LVx engines (Part #: 12589016)
  • OEM GM camshaft sprocket bolt - to be used with GM (12586481, 12576407) (Part #: 12556127)
  • OEM timing chain for Chevrolet Corvette C5.R, C6.R, and C7.R Pratt & Miller Engineering racecars - manufactured by IWIS (Part #: KAT-7636)
  • OEM GM timing chain damper for 2005 Chevrolet Corvette (LS2) (Part #: 12588670)
  • OEM GM front cover gasket for 1997-2021 LSx engines (Part #: 12633904)
  • OEM GM front crankshaft seal for 1997-2021 LSx engines, and 2020-2021 Chevrolet Corvette Stingray (Part #: 12585673)
  • Johnson Lifters Drop-In Style hydraulic roller lifters - set of 16 (Part #: 2110)
  • OEM GM Gen-IV LSx lifter guide plate - quantity of 4 required per engine (Part #: 12595365)
  • OEM GM multi-layer steel (5-layer) cylinder head gaskets for LS2, LQ4, and LS9 engines - 4.020" bore - .051" thickness - each (Part #: 12589227)
  • Melling Performance High-Performance engine oil pump for GM LS1, LS6, LS2, and LS3 engines - cast aluminum construction - hard-anodized finish - standard volume - 10psi additional pressure over stock - adjustable bypass pressure - includes oil pickup tube O-ring (Part #: 10355)
  • OEM GM Intake Manifold Gasket Set (Part #: 89060413)
  • OEM GM valve cover bolt with integrated grommet - quantity of 8 required per engine (Part #: 12577215)
  • ARP Pro Series Cylinder Head Studs (Part #234-4317)
  • OEM GM exhaust manifold gasket for 1997-2021 LSx engines - single-layer steel - quantity of 2 required (Part #: 12617944)
  • NGK 3690: TR7IX spark plugs - box of 4 - NGK heat range: 7 - thread: 14mm - reach: 18mm (.709") - hex: 5/8" (16mm) - seat: tapered - resistor - projected tip - gap: .039" (1.0mm) - center electrode: Iridium - ground electrode: Nickel (Part #: 3690)
  • MSD 8.5mm Super Conductor Spark Plug Wire Sets (Part #: 32829)
  • PCM of NC Relocated Oil Pump Pickup Tube Kit TBSS & SSR - includes OEM oil pan gasket (Part #: P-150013)
  • 4 Inch PCM of NC TBSS Standard Airbox Intake - P-80008 PCM of NC Airbox Intake (4″ LS7 MAF) - Plug & Play 4″ MAF Conversion Harness (Part #: 4inchPCMofNCTBSSStandardIntake)
  • Trailblazer/Envoy/Saab 5.3L/6.0L Spal Dual Fan Kit | P-030014, P-030023 & 030007 Three Relay Spal Fan Kit 2007+ | 12″ Spal Fans (Part #: P-030014/P-030023/P-030007)
  • Nick Williams Performance drive-by-wire 103mm throttle body LSx - natural billet aluminum finish (Part #: SD103)
  • Injector Dynamics ID1050X Injectors 14mm (Grey) Adaptor Top (Set of 8) Orange Lower O-Ring (Part #: 1050.48.14.15.8)
  • Lingenfelter Trailblazer & SSR High Flow Fuel Pump Module 2005-2007 (Part #: L710091005)
 

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TrailblazerSS
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Only thing I see is the cam bolt, the new cam should be a 3 bolt not a single and the 103 throttle body might be a bit overkill for n/a. But I'm no engine builder smarter people will chime in.

Sent from my SM-G991U using Tapatalk
 
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Stock block stroked to a 403 with high compression pistons, monster cam, ported aftermarket rectangle port heads with bigger valves, port matched great flowing intake manifold, ported throttle body, 4+" intake, upgraded injectors, upgraded fuel pumps and spot on tune at low altitude might get you there. You could even use some of your existing parts.

As others said, there is some serious coin to get there NA.
Slap a entry level Procharger on and be there with nothing but injectors, cam and tune.
I put down 605rwhp 2WD on a used P1SC1 kit.
Take into consideration you are AWD, I would guesstimate that you would be in the 550ish area.

Bonus is you can easily install a Procharger kit yourself and save that labor cost. If I can do it on in my garage, most people could if they put in the effort.
 

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Discussion Starter · #11 ·
Only thing I see is the cam bolt, the new cam should be a 3 bolt not a single and the 103 throttle body might be a bit overkill for n/a. But I'm no engine builder smarter people will chime in.

Sent from my SM-G991U using Tapatalk
Yes cam is 3 bolts and quantity of bolts would be 3
 

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Can you elaborate on why your mechanic recommends loosening up the drive chain before installing a Maggie?

If someone has done this recommended mod please chime in also.
I think his logic was two-fold:
1) my engine, already having over 100,000 miles on it, has a noisy lifter, so he thought it best to upgrade the intake system (cam, valves, lifters, etc.) before subjecting the motor to the stresses of a supercharger.
2) Once the upgrades were made, he thought I might like the additional power as is and not need to add the maggie.
I'm sorry is not using the correct terminology. I am going on memory that is not always 100%
 
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