Dart 1969 - faster 1/4mile

MOPARMAGA said

Okay cool, I'm trying to figure out why my builder wants to get a cam that's for 12.5:1 minimum for my 470 that is eeking out 11.8:1. He said he'll explain later today & I trust him. I think he was looking at a 263 intake 270 exhaust @.050 duration solid roller. I have trick flow 240s so maybe that is influential in his decision, but I don't yet know enough, I thought i knew something lol

Click to expand...

If you look at AndyF's 470 build with TF240's he used a 260'[email protected] solid roller with 700+lift at only 10.5:1 to make 750hp, the heads are a lot to do with it yes.

We run a BIG mild wedge motor at only 10:1 with Indy 365CNC -13's and a small s/roller with only 260/[email protected], runs real good, makes its max power@5500>5900rpm, around 150hp less than it [email protected]:1 and with .750" lift and dur in the 270's+ but its a heavy street/strip car run on V-power pump swill that we don't wanna turn to 7000+rpm with a 4.500" stroke.