uhhh....just don't let it near a dyno or I think you'll be disappointed. To make 415 (either gross or net) out of a streetable car you'll need more cubes or a power adder. On a chassis dyno, I bet my 289 wouldn't make over 300 HP, and it has all the goodies including the afore mentioned AFR heads.gotstang said:IMO there's no reason you couldn't make about 415hp
I don't know what is comfortable. Current 289 has stock heads except smog bumps were ground down and upper ceiling sort of D-ported. 600 Vac Holley on Weiand 8006, stock cam and Tri-Ys. It is about 220-230hp gross based on chassis dyno and 1/4 mile trap speed. As we know that the horsepower is all around ie that is the air I may try just adding AFR185s I have on my hood now. They are intended to 342 but since that have been coming on last three years it may not be ready next spring anyway. So why not on 289, it's only a head swap.timmoore55 said:How much horsepower can I coax out of a 289 without stroking it and still make it comfortable to drive?
What are the components needed to do this?