I have a short block 350 from an 89' vette. I want serious hp but I don't want to blow my engine up. I plan to go either small cam with a dual plane intake or large cam and single plane. So that puts me around 425hp and 6500rpms or 475hp and 7000rpms. How much can these engine take in stock form? Remember no nitrous or blower. Thanks. - Jesse

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1986 CAMARO Z28 -> 151,000 original miles, 43,000 on 89' vette 350 block, Holley 650 DP, Weiand intake, 1.6 rockers, 1 5/8" headers, no cat, 2 1/2" Flowmaster catback, Mallory coil, March pulleys, T5 with 3.35 1st gear, 90% Centerforce clutch, 3.73 posi, Eibach 1" drop springs, Spohn LCA's, Spohn adjustable panhard rod, Subframes connectors, polyurethane swaybar bushings/endlinks, 2 12" Sound Streams, 2 Infinity 6X9's, 2 Pioneer 6X9's, 800 watt Lanzar Vibe amp. ET 13.22@ 106.4MPH Next mods-> Homemade ram air, B&M shifter, Extreme Energy 230/236 cam, Holley Street Dom intake.

 

the weak link is the rod bolts. if it were mine and i wanted it to last i'd buy a good set of rods (lunati) or at the very least a set of arp rod bolts. you have enough miles on it to make a rebuilt worth while.

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-=ICON MOTORSPORTS=-
1st & 3rd

 

An 89 block is a good one because of the roller cam. You can go with a more radical cam this way. I would get things to beef up the engine like screw-in rocker arm studs, and stud girdles. Also, I would get a good set of rods androd bolts, like ede mentioned, along with forged pistons and crank. I wouldnt trust a stock harmonic balancer to 7000 rpm, either. And since you want such high rpm, I would go with the single plane intake and a big cam.

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1983 Pontiac Firebird SE
LG4-Based Chevy 400
700R4 Tansmission
Modified 4 Barrel Q-Jet Carb
Accel Super Stock 8mm Wires
Edelbrock Pro-Flo Air Cleaner
3.23 Posi Rear
14X7" Cragar SS/T Wheels
35X4 CD/AM/FM Head Unit
100WX2 Amp
2 Pioneer 12" Subs in Custom Box
Third Gen Performance