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Charts & Guides for Part Number SUM-1313
Summit Racing™ Pro SBF Windsor Big Nasty Hydraulic Roller Cams SUM-1313
Part Number: SUM-1313
Summit Racing™ Pro SBF Windsor Big Nasty Hydraulic Roller Cams
Pro SBF Big Nasty 3 Hyd. Roller Windsor 5.0, 226/239 Dur. 109.5 LSA + 2 Adv. .518/.518 lift with 1.6 rocker, .550/.550 with 1.7
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Overview
Brand:
Manufacturer's Part Number:
SUM-1313
Part Type:
Product Line:
Summit Racing Part Number:
SUM-1313
Item Number:
8819544
UPC:
190861385948
Cam Style:
Hydraulic roller, OE roller
Camshaft Use:
Truck/Street/Strip
Camshaft Manufacturers Description:
Pro SBF Big Nasty 3 Hyd. Roller Windsor 5.0. Big Nasty 1, 2, and 3 all have 10-14 degrees of overlap, so pick the ones that makes power where you want it! Big Nasty 3 has the strongest top-end power! Gear or a deeper stall helpful to get the engine up "On-The-Cam".
Basic Operating RPM Range:
3,200-6,600
Intake Duration at 050 inch Lift:
226
Exhaust Duration at 050 inch Lift:
239
Duration at 050 inch Lift:
226 int./239 exh.
Advertised Intake Duration:
278
Advertised Exhaust Duration:
290
Advertised Duration:
278 int./290 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.518 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.518 in.
Valve Lift with Factory Rocker Arm Ratio:
0.518 int./0.518 exh.
Lobe Separation (degrees):
109.5
Camshaft Gear Attachment:
1-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Billet cams require a melonized or composite distributor gear. Aftermarket pistons with deeper valve reliefs and a vacuum canister are recommended.
Summit Racing™ Pro SBF Windsor Big Nasty Hydraulic Roller Cams
Summit Racing™ Pro SBF Windsor Big Nasty hydraulic roller cams are performance camshafts built for Ford small block Windsor engines (1986+ roller blocks), featuring aggressive grinds for high-RPM power and a noticeable idle. They're designed with high-lift, optimized valve events to work with modern heads, offering improved scavenging for more power, often tested at appx. 450+ hp in street/strip applications.
Key features and specs:
* Target application: Street/strip, typically requiring 3.73+ gears and a 3,500+ stall converter for optimal performance.
* Performance: Known for a mean, choppy idle with strong mid-to-high RPM power (up to 7,300+ rpm)
* Specs example (SUM-8909): 248/258 degree duration at 0.050 in., providing significant overlap for "big" sound
* Design: Made in the USA from hardened bearing steel, designed to be stable at high RPM while using modern beehive springs
* Compatibility: Designed for 1986-96 Ford Windsor roller blocks, often requiring upgraded valve springs and hardware
* These cams allow for a "big cam" sound and performance while maintaining relatively good street manners, tailored for performance enthusiasts aiming for high-end power
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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