C
ONGRATULATIONS to Brisbane’s
Aaron Treymane, who has claimed
the world record for the quickest and
fastest door car running an aspirated
small-block Chev. Built totally in Aaron’s
Tremaniac Racing workshop, the 1200hp,
400ci small-block recently ran a rip-snorting
6.888@198mph in the team’s Jerry Haas-built
2011 Pontiac.
The engine utilises a GM block, and needs a
conventional head gasket to ensure studs are
in the stock location. The motor is a big-bore,
small-stroke deal that is still based on an SBC
but has splayed-valve, symmetrical-port billet
heads that were custom-made in-house. The
intake is a custom billet job with Braswell carbies
that are not rated by cfm but by venturi size; they
would be around 1300cfm. The 60mm cam is
line-bored with internal oil feeding.
With the motor being revved to 11,000rpm,
valvetrain maintenance is critical. Every three
passes the inlet valve springs are changed,
and every six passes the same happens on
the exhaust side. With the mill needing to be
in mint shape to be competitive in Pro Stock,
Aaron actually has four of these combinations,
and every 35-40 passes each engine gets a full
rebuild with valves, rods, pistons, etc.
The GXP Pontiac has all the bells and
whistles, from full carbonfibre body and brakes
to a 40-spline Mark Williams alloy rear end, with
Penske shocks front and rear.
A 6.888@198mph is an incredible
accomplishment in any car, let alone an aspirated
small-block, and Aaron reckons there is more in
the tank! s
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