Brian Tooley BTR LS3 Stage 4 Camshaft Kit
- .636/.636 inch lift, 233/24X duration, 111 LSA
- 500+ WHP target on a stock displacement 6.2L
- 3,500 to 7,000 RPM operating range
- GM 6.2L, 6.0L, LS3, L99, L76, L77
- .660 inch dual springs, 7.400 inch chromoly push rods
- 17 pounds, 24 x 14 x 6 inches
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
BTR's most aggressive naturally aspirated LS3 cam, supplied with dual springs, steel retainers, push rods and valve seals. A professional tune is required, and lifters are not listed in the title.
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ASIN: B0H6LL3PQBCategory: Camshafts
Overview
Setting out to push an LS3 as far as it will go, this kit supports the Stage 4 V2 cam with a matched set of springs and push rods. The dual springs come with steel retainers and locks, and valve stem seals finish the kit.
The seller says stock torque converters work with this cam in the Camaro SS, Corvette and G8, which is unusual for a cam this aggressive. A professional tune is still required, and the operating range starts high, so it favors high rpm driving over low speed manners.
Who it's for
Builders of LS3 engines in a Camaro SS, Corvette or Pontiac G8 who plan a tune and bolt on supporting modifications. Owners of other engine sizes, or those wanting a mild street cam, should look elsewhere.
Pros and cons
- Dual springs matched to the lift
- Steel retainers and locks included
- Chromoly push rods supplied
- Works with stock converters per the seller
- Professional tune is required
- Lifters not named in the title
- Piston to valve clearance must be checked
Performance notes
The wide duration and high lift fill the cylinders at high engine speed, which is why the operating range starts well above idle. The springs and chromoly push rods resist flex and float at that lift, and the tune decides how much of the potential reaches the wheels.
Specifications
| Brand | ENGINE SUPPLY |
|---|---|
| Dimensions & fit | |
| Product dimensions | 24 x 14 x 6 inches |
| Item weight | 17 pounds |
| Valve springs | .660 inch dual springs |
| Push rod length | 7.400 inches, 0.080 inch wall |
| Capacity & performance | |
| Operating range | 3,500 to 7,000 RPM |
| Other details | |
| Duration | 233/24X degrees |
| Part number | BTR-LS3STAGE4 SK001 7829-16 |
| Lobe separation angle | 111 degrees |
| Valve lift | .636 inch intake and exhaust |
Frequently asked questions
Does the BTR LS3 Stage 4 kit fit an LS1 or LS2?
No. The description says the kit is built specifically for 6.2L LS3 based engines, and the title lists L99, L76 and L77 variants.
Do I need a different torque converter with the Stage 4 cam?
The seller says stock torque converters work in the 5th Gen Camaro SS, Corvette C6 and Pontiac G8, and a professional tune is still required.
Are valve stem seals included?
Yes. The description lists 16 valve stem seals, along with steel retainers and locks for the dual springs.