ok ive just bought the 2275roller from 66deluxe
http://forums.aussieveedubbers.com/viewtopic.php?tid=55742 
its currently running 8.1comp 1:1.5 rockers 041 heads 40webbers electronic ign how would you guys rate this combination and where would i start to improve it

[ Edited on 3-9-2006 by newoldmanx ]

[ Edited on 3-9-2006 by newoldmanx ]

First thing to do will be to drive it and see what you think.
You may realise that you have more power than you need.
That is a good grunty combo(depending on cam of course).


If it were mine? I would upgrade the heads to some CNC "wedge" ports and manifolds.
If you intend to keep your small carbs then go for the "oval" ports.
Both these types of heads ARE NOT bolt-on.
The manifolds are a loose fit and will need dowelling,
and the springs will need a thin shim and perhaps
some work to adjust the spring travel to your combo.
And of course CCing of the chambers(and possible machining) to get your desired ratio.
The power gain will be worth every cent!

[ Edited on 3-9-2006 by dangerous ]

So is this beasty running yet?

newoldmanx,
Having had experience with roller cranks in a previous life, I would suggest to keep the compression at or under 8:1. This will save the rollers in the conrod pounding into the journal over time, creating dents or grooves, eventually preventing the rollers and cage from rotating resulting in failure of the conrod.
Be aware also, that the main bearings are modified to allow oiling to the rollers
Has the crank been pinned to keep it in index?. If you intend to do any/many drag race starts, this would probably be a good idea