Engine Kits

1964-92 SB Chrysler 273-360 (long snout) Hydraulic Camshaft
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1964-92 SB Chrysler 273-360 (long snout) Hydraulic Camshaft



Part #: 20-602-4
List Price: $287.98
Our Price: $143.99
You Save: $143.99



Small Block Chrysler 273-360, 1964-1992 (Long Snout)  295T H-107 Big Mutha Thumpr™ hydraulic Flat Tappet Cam. Big Mutha' Thumpr™ - Street/strip, needs 9.5:1 CR , 2800+ stall, intake, gears, & headers, very rough idle

APPLICATION/CAMSHAFTS 

 Comp

RPM

DURATION

 VALVE LIFT

 

Part

 

ADV

@ .050”

@ 1.5:1

 

Number

Range

IN.

EX.

IN.

EX.

IN.

EX.

Small Block Chrysler 273-360, 1964-1992 (Long Snout)

Thumpr™ - High performance street, stock converter ok, best with 2000+ converter & gears, choppy / thumping idle

20-600-4

2000-5800

279

296

227

241

.486 .473
Mutha' Thumpr™ - High performance street/strip, needs 9:1 CR, 2500+ stall, intake, gears, and headers, rough idle

20-601-4

2200-6100

287

304

235

249

.497 .483
Big Mutha' Thumpr™ - Street/strip, needs 9.5:1 CR , 2800+ stall, intake, gears, & headers, very rough idle

20-602-4

2500-6400

295

312

243

257

.507 .494

Musclecar sound is back and nastier than ever;
Thumpr™ Cams deliver incredible exhaust lope and impressive performance

Part Number 20-602-4
Engine 1964-2000 Chrysler
273ci-360ci
8cyl.
Grind Number CRS 291T H107 BMT
Description CRS Big Motha Thumpr Hyd. Flat Tappet  

  Intake Exhaust
Valve Adjustment 0 0
Gross Valve Lift 0.507 0.494
Duration At 0.006 Tappet Lift 295 312

Valve Timing At 0.006    
  Open Close
Intake 44 84
Exhaust 71 49

These Specs Are For The Cam Installed At 102 Intake CL
  Intake Exhaust
Duration At 0.05 243 257
Lobe Lift 0.338 0.329
Lobe Separation 107  

Recommended Valve Springs 995-16

Let's face it, nothing grabs our attention at a car show or cruise night more than the hard hitting sound a thumping, high performance idle. Thumpr™ Camshafts deliver that aggressive, head-turning sound like no other cam on the market. Available in hydraulic flat tappet and hydraulic roller camshafts, Thumpr™ Cams are now available for most popular applications, carb and late model efi.

Designed to provide maximum performance when combined with the latest in valve train components, such as Beehive™ Valve Springs, Ultra Pro Magnum™ Rockers and Magnum™ Pushrods

 

Advertised Duration 295 int./312 exh.
Advertised Exhaust Duration 312
Advertised Intake Duration 295
Basic Operating RPM Range 2,500-6,400
Brand COMP Cams
Cam Style Hydraulic flat tappet
Computer-Controlled Compatible No
Duration at 050 inch Lift 243 int./257 exh.
Exhaust Duration at 050 inch Lift 257
Exhaust Valve Lash 0.000 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.494 in.
Grind Number 295TH7
Intake Duration at 050 inch Lift 243
Intake Valve Lash 0.000 in.
Intake Valve Lift with Factory Rocker Arm Ratio 0.507 in.
Lobe Separation (degrees) 107
Notes Stock springs cannot be used. Includes special shafts, spacers and a special 10º 4 groove lock. Requires an adjustable valve train and machining on cylinder heads.
Part Type Camshafts
Product Line COMP Cams Thumpr Hydraulic Flat Tappet Camshafts
Quantity Sold as a kit.
Valve Lift with Factory Rocker Arm Ratio 0.507 int./0.494 exh. lift

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