siggyfreud

Mine ran fine on the stock tune for break in. Whether you stroke it or not, you may have to bore the cylinders depending on wear. The extra displacement is somewhat counteracted by the lower compression on the b302.

grabber blue gt

Personally I wouldnt do that. I'm sure if you got a motor through brenspeed they could write you an emissions tune for both the motor with the blower and the motor without the blower. Also Roush sells a complete forged shortblock out of the P51 mustang that is nothing but a stock spec 4.6l 3v with forged internals. Blow By Racing has it on their website

boomer123

Thanks for the advice guys, I think I'm going to pull the engine myself and take it to a shop and get it bored and go from there, If the shop is cheaper than buying a bottem end from brenspeed....

And what Forced induction cams and springs would you recommend? If anyone is running them I would love some imput on power gains etc with their blower.

Thanks

grabber blue gt

I can speak as far as cams, but everyone with a centri blower seems to go with the brenspeed detroit rockers (blower grind). Most guys with roush m90s seem to go with the ford hot rod cams

boomer123

Thank you! you helped me out a lot grabber blue, and all others.

Diabolical!

Man that sounds like an incredible price. You know what compression ratio that is?

grabber blue gt

I believe they do stock but I am not 100% on that.

chris09

thats funny because brenspeed themselves told me with the vortech i should get the na grind. blower grinds are for the roots/posi blowers.

boomer123

What clutch do you guys think I should go with for around 600hp?

grabber blue gt

Well thats why I said I cant speak as far as cams, just seems to be what people mostly go with with a centri is just detroit rockers themselves. On the fnsweet forum where its only m90 or tvs blowers, 90% of people go with hot rod cams