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Build Some Power With a '92-'96 Gen II LT1

Don't step over it in the mud. The forgotten small-block is supercheap to procure. Get to building.

Photography by Chad Golen, Courtesy GM Media Archives, Evans Cooling Systems, , SAE International
UPGRADE LIST
DESCRIPTION PN PRICE
Ignition
MSD cap and rotor kit 8481 (early style) $170.06
84811 (later style)
Cooling
Meziere water pump WP118 211.69
Intake
Edelbrock Performer RPM LT1 7107 399.95
LT4 7109 464.95
Cylinder heads
Trick Flow Specialties TFS-30400010 1,409.95 sold in pairs, assembled.
Bare heads available.
Edelbrock Performer 61909 539.50 sold individually, assembled.
Bare heads available.
Air Flow Research 180 cc 0908 1,824.00 sold in pairs, assembled
Scoggin-Dickey CNC-ported SD3287 1,082.50 sold individually, assembled
LT4 cylinder heads
COMPARISON
LT1 LT4
Crankshaft Cast-iron Cast iron with rolled and undercut fillets
Rocker arms 1.5:1-ratio stamped steel 1.6:1 forged aluminum roller
Timing chain Link-style powdered-metal sprockets Roller-style steel sprockets
Valves:
Intake 1.94 2.00 hollow-stem
Exhaust 1.50 1.55 sodium-filled
Valvesprings Round section Oval section wire
Compression ratio 10.4:1 10.8:1
Camshaft:
Duration @ 0.050 inch 205/207 203/210
Lift 0.447/0.459 0.476/0.479
Lobe separation 117 degrees 115 degrees
Intake runner 170 cc 195 cc
Airflow 212 cfm 240 cfm
Horsepower 300 @ 5,000 rpm 330 @ 5,800 rpm
Torque 340 lb-ft @ 4,000 rpm 340 @ 4,500 rpm
Redline 5,700 rpm 6,300 rpm
SOURCES
Air Flow Research
10490 Ilex Avenue, Dept. MMFF
Pacoima
CA  91331
MSD Ignition
El Paso
TX
9-15/-857-5200
msdignition.com
Edelbrock
Dept. 5.0
2700 California St.
Torrance
CA  90503
310-781-2222
www.edelbrock.com
PCMforless
Ellwein Engines
Saint Leonard
MD
Ellweinengines.Com
Scoggin-Dickey Parts Center
Lubbock
TX
N/A
www.sdparts.com
Evans Cooling Systems
Dept. MM
P.O. Box 434
Parkerford
PA  19457
888-990-2665
N/A
www.evanscooling.com
Street & Performance
479-394-5711
www.hotrodlane.cc
Golen Engine Service
17 Dracut Rd.
Hudson
NH  03051
Summit Racing Equipment
P.O. Box 909
Akron
OH  44309
McKeown Motorsport Engineering
Nanjemoy
MD
Trick Flow Specialties
1248 Southeast Ave.
Tallmadge
OH  44278
330-630-1555
Meziere Enterprises
20 S. Hale Ave.
Escondido
CA  92029
800-208-1755
www.meziere.com
By Chad Golen
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plozier
Where do I find a pulley to replace the ac pump on an lt1 engine as mentioned in the article

Pat
imgerry
Since I just purchased a swapper out of a 1996 B car along with the 4L60E trans, brackets, wiring, ecm and periphials I was gratified to learn the answers from the questions I had about it before rereading the article online. I'm planting it in a '78 Z-28'ed frame under my 1958 Chevy Apache panel truck! By the way, the tech tip of the Y body accessory-drive system may keep me from having to dodge my frame rail...Thanks!!
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