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That's the only combustion chamber shape I've seen and is the one shown in the magazine articles of the day. It was a revision to the MKII design but I don't know if there were any later revisions. Also, it's not uncommon for heads to have their chambers altered for domed pistons. Dan Jones

> 1. Have to run the TR8 Federal injection system. It is the flat top plenum > (to clear the hood). > 2. I could probably get away with the twin plenum from the SD1 Vitesse, no > one would know, but it would be cheating. Both the twin plenum Vitesse and single plenum Range Rover intake...

> We recently got a stock Triumph 3.5L V8 upper and lower manifold and it is > much better with respect to the ports. We suspect it would make more power > too. Are you restricted to the TR8 "federal" injection manifolds or can you use the Range Rover set-up? Can you run parts raced by...

Gurney Weslake heads > After some surfing around the Net, I found this on the GW heads. Sounds like > a completely stock, unported pair of heads. Those flow numbers you quoted were from me. They were indeed from a completely stock set of heads, as purchased from Gurney. I also believe...