Quote Originally Posted by HK1837 View Post
I was thinking more about the chassis's ability to handle that sort of hp! :-) Reliably anyway. Plus stuff like unis, leaf springs, brakes etc!

I know little about Gilmer drives though, so can't really help on that front. Maybe look at what the carbied group C and group A cars were running, they were pulling 450hp or thereabouts. There are a few of them around still running as per original engine bays. Most of the A9X's that finished in the top 5 or so from 1979 are still kicking around, and a lot of the VC-VL Commodores are still around too. What sort of 308 is it that develops 500+ hp? I assume it is blown? Or at least stroked to near 400ci?
I'll do some research into them over the next few days and work out what I should do.
The motor is a 308 crank so unstroked, and also naturally aspirated!
The motor has had some serious building to pump out this hp and was the most HP a well known Tasmanian mechanic has seen out of a naturally aspirated 308.
Spec:
Crain hi 6 ignition system
Full ARP stud kit in motor
Acel bearings
20 up on the bore
Crow push rods
HUGE Crow cam solid cam .680 tho lift
$8000 spent on porting and head work
750 Holley
Gide plates 4 push rods
Crane dual valve springs
Heads ford 4v valves
Ford roller rockers
Rockers are Yella Terra
10 to 1 completion ratio
Motor is balanced and blue printed
Standard stroke crank 308
Crank is brand new and was nitrated so are the rods
Flat top pistons forged pistons
Fel Pro head gaskets etc etc

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Thanks for the helpful info Smooth!