408 W2 combo - where to from here

Thanks for all the feedback guys. Head porting is going to happen, possibly with 2.08 valve upgrade, aiming for around 300cfm at 600 lift.

The converter and gears is my next issue, possibly a newer converter that hopefully can be built with a bit more flash stall to get it up into the torque curve a bit higher, I don't think the current stall speed is bringing it out in the right spot with the single plain inlet after looking at some of the dyno charts on the rhs head article/408 combo done over there.

The gears, mine has an Aussie valiant diff with upgraded axles in it that replaced the 7 1/4 us diff as it was a 318 car. I might build up another housing with some 3.89 gears to try in the car if I can't find some 3.7s

The cam is a tricky one. I have been looking at a crane f256 with 256/260 duration and around 600 net lift with my 1.6 rockers to take advantage of the heads once ported, just worried that it might not survive the street miles being a sharper ramp/ flat tappet. My only other option would be some mrl solid roller lifters and a solid roller with just a bit more duration and around 600 lift?

Darrylsdart - thanks for the example, it seems pretty similar to what i am running with just a bit more in the gear/ carb department plus ported heads.gives me something to look at, what cam are you running?

3406pk - I looked at that idea but my 18s have a relatively low profile tyre and are very similar in diameter to my 26" street et slicks and hard to find a slick much smaller than that. Only option may be higher sidewall on the 18s next time I put tyres on it to make it taller on te street, shorter on the track.

Only other option is a set of indy 360-1 heads I was offered, non ported. This isn't going to be an easy upgrade cost wise as I will need to port them, new 1 7/8 ttis, have heard the supplied rocker gear isn't that crash hot and have heard casting quality isn't the best. The casting quality is my major concern.