Part Number: 104227 Grind Number: POWERMAX 2033 (FORMERLY COM
Engine Identification:
Start Yr. End Yr. Make Cyl Description
1994 Up CHEVROLET 8 FOR 94 AND LATER ALUMINUM HEAD EQUIPPED LT1 CAMAROS, FIREBIRDS AND CORVETTES. WORKS IN STOCK AND MILD MODIFIED ENGINES. BOOSTS MID AND TOP END WITHOUT LOW END LOSS. USE 10758-16 1.6 RATIO ROCKER ARMS FOR MORE POWER. NOT FOR USE W/STOCK SPRINGS. FOR MASS AIR F.I. ONLY. BASIC RPM 2000-6000
Engine Size Configuration
305 C.I. V

Valve Setting: Intake .000 Exhaust .000 HOT

Lift: Intake @Cam 319 @Valve 479 All Lifts are based
on zero lash and theoretical rocker arm ratios.
Exhaust @ Cam 345 @Valve 518
Rocker Arm Ratio 1.50

Cam Timing: TAPPET @.004
Lift: Opens Closes ADV Duration
Intake 25.0 BTDC 67.0 ABDC 272.0 °
Exhaust 76.0 BBDC 30.0 ATDC 286.0 °

Spring Requirements: Triple Dual Outer Inner
Part Number 99893
Loads Closed 130 LBS @ 1.850 or 1 27/32
Open 314 LBS @ 1.360
Recommended RPM range with matching components
Minimum RPM 1500
Maximum RPM 5700
Valve Float 6300

Cam Timing: TAPPET @.050
Lift: Opens Closes Max Lift Duration
Intake (2.0) ATDC 32.0 ABDC 107 210.0 °
Exhaust 49.0 BBDC (5.0) BTDC 117 224.0 °

 

What lift will your heads handle?

 

dunno but there stock heads and the tech guy said it will work fine

 

any reason you are running stock heads on a 383? i would suggest if possible to go with some aftermarket heads and a custom speced cam from one of the major companies. your best bet if you go with aftermarket heads might be to contact one of the many lt1 tuning shops and ask them about a custom grind cam. custom grinds are the same price for the most part as off the shelf grinds but will be a much better combination.

 

only reason is i ran out of $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

 

I'd say its small for a 383. I'm running much larger on a 355, but I do have good heads. - I hope you atleast port the crap outta the stock heads or having a 383 isn't gonna gain you much over a mild modded 350.

"The top end makes the power, you just build the bottom to stay together..."

 

stay under a .500 lift with stock heads/springs or you'll be sorry, the last thing you wanna do is break a spring