Street Machine - - Urban Warfare -

CON­GRAT­U­LA­TIONS 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!

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.