Cummins 4BT

CUMMINS 4 CYL 4 BT 3.9 Rocker Ratio 1.75/1
PROF. I.D. #		Duration @.050	Cam Lift	Valve Lift	Lobe Sep.	Description	List Price
STAGE 3 C.343.S	INT.	181°	.280	.490	106	Big Stick - best all around power gains. Our most popular drop-in cam. No core required.	$465 US
STAGE 3 C.343.S	EXH.	210°	.307	.537			$465 US

STAGE 4 C.346.S	INT.	181°	.280	.490	107.5	**Straight drop in. No core required.	$570 US
STAGE 4 C.346.S	EXH.	218°	.323	.565		**Straight drop in. No core required.	$570 US

STAGE 5 C.349.S	INT.	199°	.296	.518	108	Competition only! Valve relief required. No core required.	$639 US
STAGE 5 C.349.S	EXH.	218°	.323	.565		Competition only! Valve relief required. No core required.	$639 US

All our cams are brand new cast blanks and no return core is required.

TAPPETS: We recommend only COLT CAMS CUSTOM 1.4 diameter lifters = $110.00 US a set.

RETAINER: All our cams are drilled and tapped to accept our custom retainer to keep the gear from walking off. This is not required but highly recommended - $57.00 US

VALVE LASH: All grinds INT .010” EXH: .020” COLD

STOCK CAMS: We do carry brand new stock cams as well - $250.00 US

**NOTE!!!!! When we say our camshaft is a straight drop in, we mean: In almost all cases.
However, due to many contributing variances in an engine: heads planed, block decked, valve recession etc... any cam including stock, should always be checked for clearance before start up!

Cummins 4BT

**NOTE!!!!! When we say our camshaft is a straight drop in, we mean: In almost all cases. However, due to many contributing variances in an engine: heads planed, block decked, valve recession etc... any cam including stock, should always be checked for clearance before start up!

**NOTE!!!!! When we say our camshaft is a straight drop in, we mean: In almost all cases.
However, due to many contributing variances in an engine: heads planed, block decked, valve recession etc... any cam including stock, should always be checked for clearance before start up!