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

Danger Mouse Gets A Fresh Start In 2004

By Mike Petralia, Photography by Mike Petralia, Seth Millhollin

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.

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 Milodon
2250 Agate Ct.
Simi Valley
CA  93065
26555 Northwestern Hwy.
MI  48033
Speed-Pro Sealed Power Corporation
100 Terrace Plaza
MI  49443
Holley Performance Products
1801 Russellville Rd.
Bowling Green, KY 42101
KY  42101
131 W. Lang Ave.
West Covina
CA  91790
Lunati Cams
Olive Branch
Bill Mitchell Hardcore Racing Products
51 Trade Zone Ct
Source for World Products
NY  11779
By Mike Petralia
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