Performance Auto

07/01/2025

Engine matches 604 crate HP on alcohol from 3600 RPM to 4500 RPM and then starts building impressive HP from there as can be seen on the Dyno screen picture shown. Lower line on dyno pic is 604 engine. Lots of current spec motor racers out there are losing ground on slow restarts or on tracks where they are coming out of the corner slow during part of the race. This engine combination should address that issue.
ENGINE WILL BE AVAILABLE IN THE NEXT FEW WEEKS AFTER TRACK TESTING FOR A COUPLE NIGHTS
Performance Auto
2801 Falls Ave
Waterloo, Iowa
319-291-6580

03/28/2025

Want to buy worn out 602 or 604 Blocks. Will pay $400.00. Call us with any questions.

02/15/2024

09/23/2019

Fresh 383 small block chevy 4 bolt main block. RHS Aluminum heads. New dish top hypereutectic sealed power pistons, 5.7" eagle rods, Eagle internal balance crank, Clevite bearings, Erson # E110046 hydraulic cam 232/234 duration, .488 .488 lift, Erson aluminum full roller rocker arms, Comp cams chrome moly pushrods, Melling oil pump, 7 qt street strip pan, .250 link double roller timing set. Edelbrock performer rpm dual plane intake. 9.9 Compression. Peak HP is 421 at 5500 RPM. Makes 442 lbs. of torque starting at 3200 rpm and 461 lbs. @ 4400 RPM. Price is less carburator, distributor, water pump, starter and plug wires.

STOP IN AND HEAR IT RUN. $4800.00

Performance Auto
2801 Falls Ave. Price is less carburator, distributor, water
Waterloo, Ia pump, starter and plug wires.
319-291-6580

07/17/2019

Fresh Street / Strip Pump Gas 496 BB Chevy Engine 636 HP, 607 lb. Torque
$8,800
Waterloo, Iowa
Fresh on the dyno 496 big block chevy engine. 636 horsepower @ 5900 rpm, 607 ft lbs of torque @ 5000 rpm. Runs on 93 octane pump gas. New Wiseco forged pistons, S**t forged steel crank, S**t H beam rods, Erson hydraulic roller cam - 238/246 duration, .621 lift. Aluminum PBM heads. Scorpion made in the USA aluminum roller rocker arms. Moroso 6 qt. oil pan. Edelbrock performer rpm air gap intake. Price is less carb, distributor, water pump, plug wires. Stop in and hear it run.
Performance Auto
2801 Falls Ave
Waterloo
319-291-6580

06/23/2019

Fresh Wiseco Flat Top Piston 6" Rod IMCA USRA 350 Chevy 4 Bolt Short Block
$2,600
Waterloo, Iowa
Fresh .060 forged piston 4 bolt main assembled short block. New Wiseco 434 gram lightweight forged flat top pistons,New S**t crank, New S**t 6.0" bushed 3/8" cap screw rods, 1/16 1/16 3/16 moly rings. Clevite bearings. Balanced rotating assembly. Bored and honed with torque plate. Square decked .020. File fit rings. Legal short block for B Mod or hobby stock.

PERFORMANCE AUTO
2801 Falls Ave.
WATERLOO, IA
319-291-6580

03/02/2019

Now offering cylinder head, carburator and manifold flow testing and porting work with the addition of our Superflow SF600 flow bench.