The Holden Grey motor is often referred to as the Holden side plate. The engine earned its name as they were painted grey from the factory. They came in 2 sizes, 138ci and 132ci. More engineering and after market modifications have gone into this engine than any other engine in Australian automotive history.

May 06, 2013

Hot Grey Motor in FC

10:02 Posted by GreyFC No comments


Here are the specs:

Short motor

Stock block, crank, rods & pistons
35-75 cam with steel timing gear
lightened flywheel
recurved dizzy
raised oil pressure (the ol’ washers behiend the spring trick)
fully balanced, clutch and all

Head & manifold

Shaved enough to raise compression to 8.6/1
179 intake valves in relieved chambers
hardened valve seats
runs premium unleaded fuel
ported intake & exhaust
Matching ported speco manifold with oversized mating rings
10mm alloy plate, Tig welded to manifold to head face to
clear 4 into 2 into 1 Extractors

Carbs

Triple 1-1/32 strombergs
fitted with venturi restrictors

Devilrod

Frogmouths were purchased from Alan Fountain Ph(02) 4392 2215
they come with the mesh and an adapter ring to holden strommies
as they are made for American stromberg 94′s

What problem?
The motor revs its ring out as some of our club members can atest.
Although I dont give it a hard time very often.
All I wanted to achieve was a lumpy idle, A nice sound through the gears & to look good to

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