Don Terrill’s Speed-Talk

1980RS wrote: ↑Wed Oct 14, 2020 6:18 pm I ran 10.90's@120mph with minimal porting and stock size valves with my 062 Vortec heads. Like to see that with a camel hump head.

vortecpro wrote: ↑Wed Oct 14, 2020 7:07 pm

1980RS wrote: ↑Wed Oct 14, 2020 6:18 pm I ran 10.90's@120mph with minimal porting and stock size valves with my 062 Vortec heads. Like to see that with a camel hump head.

What track did you run at? What weight did you run at?

falcongeorge wrote: ↑Wed Oct 14, 2020 11:14 am

vortecpro wrote: ↑Wed Oct 14, 2020 7:46 am Typically what I've seen the best 062/906 with zero shift can flow 240 @ around .500 lift unported and thats rare. Ported with a 1.940 valve I get around 260 CFM @ .550 lift. A 291/462 fuelie flows generally in the high 190s stock round .500 lift. Ported with a 2.02 valve still thick enough to use I get around 262 CFM but @ .650 lift. On the exhaust I get around 210 CFM, which I don't think I've seen on the Vortec head. With the fuelie I can run any piston I want. On welded fuelies (comp eliminator) I've seen much more flow. Super Stock 1.940 Fuelies flow 270 CFM with a 1.940 valve.


Some pictures of the last set of Vortecs I did.



28 inches, sealed 4.030 bore 1.940 valve.

.300 193
.400 234
.500 259

Exhaust was 180 @ .500

At last, someone else posting some hard data instead of mindlessly reguritating crap he read on other forums. And these guys are telling him he should replace his professionally cnc ported camel bumps with BONE STOCK vortecs, not based on the data, which says otherwise, but because "the internet says so".
So sad to see mindless groupthink taking over here, there used to be a preponderance of thinkers here, this place used to be an island in a sea of internet ****, but I have noticed the erosion more and more. Has the real conversation gone over to the Hotpass boards exclusively?
As far as the chambers, angle mill the bumps and run the piston/head tighter, if you are really that worried about it. Tell you what, lets see one of these guys telling the OP that he has to chuck his ported bumps and start over donate the OP some dyno time, stock vortecs and eps against the Brzenenzski camel bumps and torker, optimise timing and jetting, for both combos and have at it. I don't even like the torker II that much, my guess is, it'll be a bloodbath, the vastly superior bump exhaust port will make the EP's torque advantage a wash, and the torker and bumps will walk all over the vortecs and EPS on top. FWIW, I usually see 255/260 from max effort (sleeved head bolt holes,no weld/epoxy) bumps myself, and I only consider myself a decent amateur porter.
Sure, IF you don't have a clue as to how to port heads, bolting on a pair of vortecs will gain over a pair of stock camel bumps. So what? I've ported them both, and I'd take a pair of ported bumps and a single plane over a set of stock Vortecs and an EPS any day of the week. Honestly this isn't even worth arguing about, its stupid to even be discussing this. I feel like I have wandered into the Steves nova forum or the HAMB. WTH has happened to this place?
OP, the stuff these guys are selling is cheaper by the truckload. You have a good set of heads there, and taking into account the two intake choices you presented (which I assume are dictated by the rules you run under?), they are the superior head. This stuff is expensive enough without wasting money on stuff that isn't going to do squat for you. I'm done here, there will be five more pages of bus jumpers spouting "vortecs is better, cause it says so on every forum" crap before this thread dies, thats how the internet works. Save your money and spend it somewhere where it will actually do you some good.