Missed on this combo?

So big change of plans after 2 phone calls. First call was that the rocker I sent to Dave Hughes didn't really spec out to 1.6. Ahhh... not even 1.5. I friggin knew it! I know how to measure lift at the damn valve. 16 new ones, each one checked out, are on the way. Good on Hughes!

Also spent 90 minutes on the phone with Tim at Bullet. 90 minutes. Gave him flow numbers, dyno numbers, everything. When he plugged in my flow numbers on some software, it all jive pretty much exactly like my dyno sheets. Not really what we all expected.

To shorten up the story, my exhaust flow is way too efficient for the corresponding intake flow. He used the same term someone did on this thread. "That thing can't clear it's throat". Something about 75 percent is where you want to be, intake vs exhaust. I'm way over.

So before I start epoxying anything. Send the cam back. It's going to be split duration, alright. But split the other way. I think he said 269/255. Seen it before, done this before, so we shall see.

So really.....when you look at things, I had a 560 horse motor, not 400, or even 450, but 560,,, that had way less lift than thought, and had a cam ground for heads that I didn't really have. I have a feeling this is all gonna work out. Just a hunch. Got nothing to lose except time.


Where is he going to put the LSA?

The 75% rule is ok for a start, but good heads are more like 60-65% exhaust/intake flow. And I wouldn't say they exhaust is that good, it's that the intake is not that great.

How the hell did Dave let rockers get out the door with the wrong ratio? He blows his own horn about his ratios being correct. You have to check everything. That's one reason why it costs so much to do this. You have to verify everything.

Keep us posted. Hopefully some learn from this episode about checking and rechecking and double rechecking.