XXTREME 245 LS1/LS2 Cathedral 3.898 Small Bore (SOLD IN PAIRS)
$1,609.00 – $2,904.00
The 245 cathedral head is the best of both worlds with the 11-degree valve angle and cathedral port shape. No cathedral head can come close. Independent dyno tests have shown an LS1 to produce over 490 horsepower to the wheel through a 4l60 transmission with factory manifold and cam on pump gas.
Requires 3.898″ bore minimum and LS3 intake rocker.
Features:
- Pro designed ports & chambers
- 245cc as-cast port designed and tested in the USA
- Ultra-smooth 356-T6 Aluminum Casting
- 5 angle valve job
- 63CC or 59CC Chamber size or additional options available
- 11 Degree Valve Angle
- Diamond honed guides
- Built-in raised valve cover rail
- Monster .750 deck thickness
- Billet LS3 OEM Rocker Stand
- For use with standard or 6 bolt pattern
- Large spring pockets
- Utilizes 2.08 intake valve and 1.60 exhaust valve (Larger sizes available upon request)
- Multiple spring options
- Assemblies include: 21-4N stainless 1pc swirl polished back cut valves
- Machined and Assembled in the USA
- Outperforms other comparable heads in the industry
Related products
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XXTREME 245 LS 1/LS2 Cathedral 4.00+ Large Bore
$1,682.00 – $3,035.00 Select options
(SOLD IN PAIRS) -
XXTREME 240 LS 1/LS2 Rectangle 3.898 Small Bore (SOLD IN PAIRS)
$1,609.00 – $2,904.00 Select options -
XXTREME 260 LS3 Rectangle Large Bore
$1,682.00 – $3,035.00 Select options
(SOLD IN PAIRS)