Speed Inc. Heads & Cam Package
COMPANY: Speed Inc.
VEHICLE: Camaro / Firebird
PART NUMBER: N/A
PRICE: $2,649.99
POWER GAIN: See dyno chart
Similar though not identical to the company's LS2 head & cam package offerings, Speed Inc.'s LS1 system starts off with Stage 2 ported Patriot LS6 heads using 2.02 and 1.57 valves and a 59cc chamber. As to the valvetrain, the COMP cam of your choice is accompanied by COMP pushrods.
An ASP underdrive crank pulley also is included, as are NGK spark plugs and coated Pacesetter long-tube headers with an off-road Y-pipe (neither exhaust item pictured). All necessary hardware and gaskets are also included in this price, as is mail-order tuning. Optional upgrades include AFR heads ($900), an LS6 intake for older F-cars, and Dynatech Supermaxx headers with cats ($850). To get the gains shown in the accompanying dyno chart, you will also need a free-flowing cat-back exhaust (not included).
TSP Heads & Cam Package
COMPANY: Texas Speed & Performance
VEHICLE: Most LS1
PART NUMBER: N/A
PRICE: $2,369.00
POWER GAIN: 70-100 hp (rear wheels)
Complementing the company's packages for LS2 engines, Texas Speed offers this LS1 heads & cam system that features Precision Race Components "Terminator" cylinder heads. These particular heads use a 200cc intake runner and feature a 62cc combustion chamber to help net a 10.85:1 CR on an otherwise-stock LS1. Based off of Edelbrock LS1 head castings, these heads have a 3/4-inch thick deck for added strength and sealing. Also included is your choice of a TSP bumpstick and a set of TSP hardened chrome-moly pushrods. And, like with TSP's LS2 package, tuning is available for an additional $250 plus shipping for PCM.
For those on an even tighter budget, Texas Speed offers basic LS1 heads/cam packages using ported 5.3L castings starting at $1,599. Check out the company on the Web for more information.
LT1 Low Budget
SLP LT1 F-Body Performance Package
COMPANY: SLP Performance Parts
VEHICLE: Camaro / Firebird
PART NUMBER: 21014, 22100, 30017C, 30029, 31042, 30044
PRICE: $1,567.20
POWER GAIN: 37 hp (rear wheels)
Though not technically available as an SLP PerformancePac, the variety of LT1 F-body bolt-ons offered by SLP can combine to form a worthy power-enhancing package. And though the items we've gathered here work only for 1995-1997 Camaros and Firebirds, you can easily set up a package for 1993-94 single-cat cars using similar part numbers. On the induction end of the equation, SLP's Cold Air kit ($279.95) picks up air from outside the hot engine compartment and delivers it past the company's Throttle Body Flow Booster ($36.00), yielding a smoother, cooler air charge inside the intake manifold. As to the exhaust side, SLP's polished, ceramic-coated 1 3/4-inch headers ($720.95) feature 3/8-inch stainless steel flanges for strength and are bolted up using the company's header install kit ($61.75).
Capping off the system and offering increased exhaust tunes is SLP's "Loud Mouth" exhaust, which, though originally designed for later LS1-powered cars, bolts up easily via use of a PN 30044 installation kit. The exhaust will set you back $432.55 and the install kit just $36. When combined, these items yield significant power and torque gains at the rear wheels! You can sub in a quieter "Loud Mouth II" exhaust if you like; or you can also leave the cat-back out and save some dough, but you'll lose about 11 rwhp. The choice is yours!
SLP C4 330 HP PerformancePac
COMPANY: SLP Performance Parts
VEHICLE: Corvette
PART NUMBER: 24000
PRICE: $1,441.80
POWER GAIN: See dyno chart (rear wheels)
If you've got a 1992-1996 Corvette, you're in luck: SLP offers an affordable PerformancePac just for you. This package deal saves you $75 over buying each of the components individually, and comes with intake components including an SLP Cold Air Induction System and Throttle Body Flow Booster.
Increased valve lift is afforded via aluminum 1.6-ratio narrow-body roller-tip rocker arms, and a "PowerFlo" exhaust system sets the deep rumble of your Corvette's LT1 free. Want to add a distinctive visual touch? Slap the included "330 HP PerformancePac" badges on your Vette's exterior to let the world know your LT1 means business!
Thunder Racing LT1 F-Body Performance Package
COMPANY: Thunder Racing
VEHICLE: Camaro / Firebird
PART NUMBER: LT1PP2
PRICE: $499.99
POWER GAIN: See dyno chart (rear wheels)
Proven on GMHTP's project LT1 Firebird ("Thunderstruck," Nov. 2006), Thunder Racing's LT1 F-Body Performance Package keeps it simple and affordable, yet offers impressive gain-per-dollar fun. A stainless steel MagnaFlow cat-back exhaust system improves the exhaust note while adding torque throughout the rpm range, and a K&N cold air intake moves the filter out of the restrictive stock airbox and into cool air in the space just ahead of the driver's side front wheel.
Finally, a throttle body airfoil further reduces intake system restriction for dyno-proven gains. At just under $500, it would be tough to find more LT1 power for less dollar. Note that in the accompanying dyno graph that a 160 thermostat will also be needed to achieve the indicated increase.