Check Availability

Is this converter legal for your car? CARB legality checker · instant

Enter your Engine Family Number and we will confirm whether this exact converter is street-legal for your vehicle.

COMP Cams

SKU 35-602-8

COMP Cams 35-602-8 Big Mutha' Thumpr 243/257 Hydraulic Roller Cam for Ford 351W

Name: COMP Cams 35-602-8 Big Mutha' Thumpr 243/257 Hydraulic Roller Cam for Ford 351W
Brand: COMP Cams
SKU: 35-602-8
Price: 577.95 USD
Availability: InStock

$577.95 USD

Check Availability

Check availability, to reach.

Free shipping over $80 To the USA

Warranty 12 Months

Is this converter legal for your car? CARB legality checker · instant

Enter your Engine Family Number and we will confirm whether this exact converter is street-legal for your vehicle.

Street/ strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.

Big Mutha' Thumpr 243/257 Hydraulic Roller Cam

Specifications

Camshaft Series	Thumpr
Camshaft Material	Austempered Ductile Iron
Usage	Street/Performance
Grind Number	299THR7
Lobe Separation	107 DD
Lifters Included	No
Valve Springs Required	Yes
Assembly Lubricant Included	No
Camshaft Gear Attachment	1-Bolt
Cam and Lifter Kit Upgrade	CL35-602-8
Cam, Lifter and Gear Drive Upgrade	GK35-602-8
Engine Family	Ford 351W 8 Cylinder (1969-1996)
K-Kit Upgrade	K35-602-8
Grind Number	299THR7

⚠️ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.

Warranty: 12 Months

Sold by Specification. This is an engine build part, chosen by its measurements rather than by year, make and model. Match the specifications to your build. If you are unsure, check with your mechanic or dealership. Making sure it fits is the customer's responsibility.

A vehicle fitment list isn’t available for this part.

Please check the product description for the manufacturer’s application details, or ask a specialist — we’ll confirm whether it fits your vehicle before you buy.

Shipping Information

Free shipping is available for eligible orders.

Shipping: Free to the USA.

Orders are processed during normal business days. Delivery dates may vary by carrier and destination.

Owner Reviews

Be the first to review this part. Real owner feedback, tagged with the exact vehicle it was fitted to, helps the next shopper buy with confidence.