TSP CHOPacabra LS Cam Kit 214/222 .550/.550 108 LSA + LS7 Lifters + Trunnion Upgrade +
- 214/222 duration at .050, .550/.550 lift
- 108 LSA with 106 ICL
- 1999 to 2013 GM 4.8L, 5.3L, 5.7L cathedral port LS V8s
- 16 LS7-style roller lifters with guides
- PAC1219-style beehive springs, .625 in, 340 lbs/in rate
- 7.400 in pushrods, 0.080 in wall, chromoly
- 2 LS1-style MLS head gaskets in the kit
- Professional tune required, factory converter works
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A cam swap kit for cathedral port LS engines that pairs an aggressive lopey cam with lifters, springs, pushrods and gaskets. Plan on a professional tune and a rough idle.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B0H96VHLM3Model: 12499225 55100Category: Camshafts
Overview
A cathedral port LS cam swap on a truck or car gets its parts in one box here: camshaft, roller lifters, beehive valve springs, pushrods, valve stem seals, gaskets and a rocker arm trunnion upgrade. The cam is ground for a choppy idle, and the trunnion kit turns stock rocker arms into roller bearing ones.
Buying the cam with matched lifters, springs, pushrods and head gaskets removes the guesswork over which parts work together. The grind is aggressive, so idle quality and street manners change a lot, and the listing says a tune by a professional is required for every application.
Who it's for
Owners of late-model GM trucks and performance cars with cathedral port V8s, who want an obvious chop at idle and have a tuner arranged, are the target. Anyone after a quiet stock idle, or with different heads, should look at another cam.
Pros and cons
- Lifters, springs, pushrods and gaskets included
- Rocker trunnion upgrade in the box
- Works with factory torque converters
- Beehive springs matched to the lift
- Professional tune required
- Rough lopey idle by design
- Listed for cathedral port engines only
- Timing chain and cam bearings not listed
Performance notes
Duration and lift decide how much air the engine moves, and the lobe separation angle sets the choppy character at idle. The beehive springs are matched to the lift so the valves stay controlled at higher rpm. The listing says the factory torque converter works, but the engine needs a tune to use the added airflow.
Where it stands among camshafts
- #1 most-searched brand and model of the 5 camshafts lines we track (by search demand, not sales).
From the specs of the 15 camshafts we list; not a test result.
Specifications
| Brand | ENGINE SUPPLY |
|---|---|
| Model | 12499225 55100 |
| Dimensions & fit | |
| Product dimensions | 24 x 14 x 4 inches |
| Item weight | 17 pounds |
| Installed height | 1.800 inches at 135 lbs |
| Capacity & performance | |
| Open load | 348 lbs at 1.175 inches |
| Other details | |
| Engine fit | GM 4.8L, 5.3L, 5.7L cathedral port LS V8 |
| Model years | 1999 to 2013 |
| Duration at .050 | 214/222 |
| Lobe separation angle | 108 |
| Valve lift | .550/.550 inch |
| Intake centerline | 106 ICL |
| Valve springs | PAC1219-style .625 inch beehive |
| Spring rate | 340 lbs/in |
| Lifters | 16 LS7-style roller lifters with guides |
| Exterior | Machined |
| Pushrods | 7.400 inch length, 0.080 inch wall, chromoly |
| Coil bind | 1.100 inches |
| Head gaskets | 2 LS1-style MLS |
Frequently asked questions
Does the CHOPacabra kit include a timing chain or cam bearings?
Neither is listed. Named contents are the camshaft, 16 LS7-style roller lifters with guides, PAC1219-style beehive springs, pushrods, valve stem seals, a front timing cover gasket set, 2 LS1-style MLS head gaskets and the rocker arm trunnion upgrade kit.
Do I need a stall converter or a tune with this cam kit?
The listing says it works with factory torque converters, so no stall upgrade is needed. A professional tune is required for all applications.
Is the TSP CHOPacabra a smooth street cam?
No. It is sold for an aggressive lopey chop at idle, so expect a rougher idle than a stock cam.