Two gaskets are supplied to seal the plenum to the base. Don't use any sealer on them. Just four stainless steel bolts are needed to hold the top down.Two gaskets are supplied to seal the plenum to the base. Don't use any sealer on them. Jus The cool thing about tuning an EFI motor is that you do it while the engine is running. Also, the perfect tune-up is usually just a few keystrokes away, but it may take a while to get there if you're not careful. That's because it's just as easy to go way off base with your fuel map as it is to get the thing right in a matter of minutes. Holley has gone to great lengths to supply what it feels will be a reasonable fuel map for each particular EFI kit, but just like with a carburetor, there's always some power to be found with tuning somewhere. However, unlike tuning a carb with traditional jets and air bleeds, tuning EFI takes only seconds, and the results can be felt instantly. In the end, this stroker Mouse made some great power, and the fact that it idled incredibly smooth at just around 600 rpm points to its being a great daily driver. The throttle position sensor (TPS) goes on the side of the throttle body and tells the computer how far the throttle blades are open. This can be roughly translated into how much power your foot wants the engine to make.The throttle position sensor (TPS) goes on the side of the throttle body and tells the com ENGINE SPECS Bore/stroke/cid: 4.030/3.832/391 cid Crank: C.A.T. 4340-steel Rods: C.A.T. 4340-steel 5.7" Pistons: JE forged 10.4:1 Rings: Total Seal gapless Bearings: Clevite "H" series Camshaft: Lunati hydraulic roller PN 50156 Cam Specs: 232/242 degrees at .050 290/300 degrees advertised .510/.525 lift 110-degree lobe separation Oil system: Milodon stroker pan and HV pump Heads: Holley Street Avenger EFI: Holley Stealth Ram Ignition: Holley Annihilator The Holley ECU monitors coolant temp as well as both ambient and manifold air temp. It can also be programmed to turn on or off things like electric fans and bump up idle speed when you turn on your A/C, since it now knows how hot the engine is and how well it idles.The Holley ECU monitors coolant temp as well as both ambient and manifold air temp. It can Before randomly trying to figure out where each wire goes, sit down and read through the entire instruction manual. You might find it difficult to read at first, but it'll all make sense once you're trying to plug things in.Before randomly trying to figure out where each wire goes, sit down and read through the e Not only does EFI have lots of electrical connections, there are also lots of vacuum connections and even some vacuum connections that go to electrical connections! The Manifold Air Pressure (MAP) sensor is one of them. In non-boosted engines like this one, a 1-BAR MAP will always read intake manifold vacuum, instead of pressure.Not only does EFI have lots of electrical connections, there are also lots of vacuum conne Sitting to the left is Holley's EFI expert, Doug Flynn, who flew out to California to help us tune this thing perfectly. Dyno operator and co-owner of Vrbancic Brothers Racing, George Vrbancic, is actually pretty well up to speed on tuning EFI motors and was even able to show Doug a thing or two.Sitting to the left is Holley's EFI expert, Doug Flynn, who flew out to California to help Even though the Holley ECU controls the timing advance curve, you still have to set it first the old-fashioned way. We set ours to a max 36 degrees and tweaked the distributor's curve with the computer to get the best power. There are no springs or advance mechanism in the Holley distributor to wear out, either.Even though the Holley ECU controls the timing advance curve, you still have to set it fir We had to try one old hot rodder's trick to see if we could squeeze out more power. We swapped the Lunati 1.5:1 intake rockers with some 1.6:1-ratio rockers and found just a hair more power.We had to try one old hot rodder's trick to see if we could squeeze out more power. We swa RPM TQ HP 2600 401 199 2800 424 226 3000 439 251 3200 444 271 3400 444 287 3600 441 302 3800 445 322 4000 455 347 4200 461 368 4400 463* 387 4600 461 403 4800 457 418 5000 449 427 5200 434 430 5400 429 441 5600 416 444* 5800 401 443 6000 383 438 Avg 436 356 Max* 463 444 SOURCES C.A.T. Power engine parts 345 Cloverleaf Dr., Suite C Baldwin Park CA 91706 Lunati Cams A Holley Performance Products Company 4770 Lamar Ave. Memphis TN 38118-7403 Holley Performance Products 1801 Russellville Rd. Bowling Green, KY 42101 KY 42101 270-782-2900 www.holley.com Total Seal Phoenix AZ 800-874-2753 totalseal.com Hye-Tech Performance 13912 Valley Blvd., Unit A La Puente CA 91746 Vrbancic Brothers Racing 1463 E. Philadelphia Ontario CA 91761 909-930-9980 JE Pistons « | 1 | 2 | View Full Article Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!