Chevy Small Block Part 16 - Pt. 16: Rebuild For The New Year

Danger Mouse Gets A Fresh Start In 2004

Mike Petralia Jan 1, 2004 0 Comment(s)
Sucp_0401_10_z Chevy_small_block_part_16 Tuning 2/14

The COMP Cams belt drive will be reused due to its durability and the quick cam changes it allows. It's also really easy to set camshaft endplay with it so we definitely like building engines with these.

The new, taller slugs put DM's pistons right at "zero" deck, which is what we like to see for the best possible power. In addition, they also raised DM's compression by a little more than a half point. Other than the new slugs, DM was put back together just like it was the first time. The file-fit Speed-Pro rings were gapped a little wider than standard to accept some extra abuse and a pair of steel O-ring Fel-Pro heads gaskets (PN 1003) were clamped on top.

For its next bash on the dyno, we will retest the Holley Street Avenger TBI fuel injection system that we had tried before. To make DM more TBI friendly, Speed-O installed a smaller Lunati hydraulic cam and some World Products Sportsman II iron heads. Then they topped it off with a Holley Street Avenger dual plane intake manifold to give the TBI the strongest signal possible. We asked Speed-O to reuse the COMP Cams 1.5:1 magnum roller rockers button up the ignition with a new computer-controlled electronic distributor from Holley.

Sucp_0401_11_z Chevy_small_block_part_16 Block_honing_machine 3/14

To give the Motown block more bite on its new set of Speed-Pro rings, Speed-O-Motive brushed it with their block hone.

We figured even though this equipment might not break any records in the horsepower deparment, it would definitely complement the low-speed torque characteristics of the street-worthy TBI. Who knows, we might break a new low-end torque record with this set up. You'll just have to wait until next month to find out. Because that's when we'll head back to Vrbancic's dyno once again to see if we can make the TBI fly.

Danger Mouse Rebuild Specifics For Part 16
Compression: 9.1:1
World Products: Motown block 4.030 bore
World Products: Sportsman II iron heads 64cc
Lunati: hydraulic flat-tappet cam PN50179LUN (268-279 degrees advertised duration, 215-224 degrees duration at .050, .489/.489 lift, 112-degree lobe separation, 108-degree intake centerline)
Lunati: crank, rods, and flattop pistons
Holley: dual-plane manifold PN300-36
Speed-Pro: rings and bearings
Fel-Pro: gaskets
Milodon: oil system and fasteners
Speed-O-Motive: assembly


Comp Cams
Memphis, TN 38118
West Covina, CA 91790
Holley Performance Products
Bowling Green, KY 42101
Lunati LLC
Olive Branch, MS
Simi Valley, CA 93065
Speed-Pro Sealed Power Corporation
Muskegon, MI 49443




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