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Old 01-03-09, 02:41
Alex Blair (RIP) Alex Blair (RIP) is offline
"Mr. Manual", sadly no longer with us
 
Join Date: Feb 2003
Location: Ottawa ,Canada
Posts: 2,916
Default Jeez....

Quote:
Originally Posted by Barry Churcher View Post
In all my experience building engines for drag cars and owning a stock car I never did figure out what a 3/4 race cam was. 3/4 of what!
Barry
Barr7y/...
You probably forgot more stuff than some of these young whelps with their souped up rice rockets ever will know...
Crane still advertises them..They run a little rough on the idle but come on when you give 'er...try one...good for the street..blow away some of those young whipper snapper at the lights..
Best $129.99 US you'l ever spend..

Crane #270-100172

Energizer 3/4 Race Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .450''/.450''
Duration: 274°/274°
RPM Range: 1800-5800

100172 - Crane Cams Energizer Cam & Lifter Kits Details

Chevy 262-400ci Small Block 1955-98

*Note: In order to use these camshafts in 1955-57 265ci blocks, it is necessary to machine a small groove in the rear main journal of the cam to allow oil flow to the top of the engine.

**Note: Beginning in 1987, most of the V-6 and V-8 engines were equipped with hydraulic roller camshafts. There are differences in the block to accommodate a cam retention thrust plate and the anti-rotation mechanism for the lifters. These blocks are identifiable by bolt holes for a cam retention plate under the upper timing sprocket, as well as bosses and tapped holes in the lifter valley for lifter retention hardware. The camshafts on these engines have a step nose and smaller bolt circle on the front of the cam. An earlier model camshaft may be used in these blocks by using the appropriate timing chain set and adding a thrust button when using a roller cam.
1988-99 Chevrolet 305 and 350 V-8 engines (and some 1987 350 V-8 engines) use a different configuration camshaft core than the 1955-87 engines and cannot be interchanged.

ROUGH IDLE, MODERATE PERFORMANCE USAGE, GOOD LOW AND MID-RANGE TORQUE AND HP, MILD BRACKET RACING, AUTO TRANS W/2500+ CONVERTER, 2600-3000 CRUISE RPM, 8.75 TO 10.0 COMPRESSION RATIO ADVISED.

Grind Number: 274 H06
Operating Range: 1800-5800 RPM
Duration Advertised: 274° Intake / 274° Exhaust
Duration @ .050'' Lift: 218° Intake / 218° Exhaust
Valve Lift w/1.5 Rockers: .450'' Intake / .450'' Exhaust
Lobe Separation Angle: 106°
Max Lift Angle: 102° ATDC Intake / 110° BTDC Exhaust
Open/Close @.050'' Cam Lift: Intake - 7° BTDC (opens) / 31° ABDC (closes)
Exhaust - 39° BBDC (opens) / (1°) BTDC (closes)

__________________
Alex Blair
:remember :support :drunk:
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