Cool, thanks for the update! I'm in no hurry myself as other things came up that needed money, so I have time to start saving again
When I put my name in for the second run, I was told 50% deposit...... 1400.00 so 2800.00 for an assembled pair.
Includes 3/8" T/A valves & Dual Super Springs? 11/32" Chevy would be nice. Maybe beehive springs too.....
8mm and beehive LS stuff would be even COOLER! the real estate on the head doesn't allow much room for bigger valves so reducing the stem as much as possible would be like putting in bigger valves without actually installing bigger valves but the stem to the outer diameter of the valve increases allowing more room for more air to sneak by. Plus the LS stuff seems to be less costly than the old school sbc stuff for some reason? Derek
Talked with Mike Sr and they are still doing the R&D to make sure the heads meet thier potential. They are experimenting with valve sizes and port shapes. They are dialing things in then having another set of castings done and hopefully those heads will be close to what the production heads will be like. I have no doubt these heads are going to be better than most ported irons right out of the box.
We have finally got to work on the head this last month, really sorry to all for the time this is taking. To make it brief for right now. Intake started out at a peak of 213 cfm and the exhaust at 160 cfm just valve jobbed and no clean up anywhere. Intake port entry had not been opened at all. Michael, (my son) opened up the entry close to a valley pan gasket, int went 241 cfm. Then we blended the chamber, 247 cfm. He then blended the bowl area and smoothed the short side, 271 cfm. Worked a little behind the pushrod and widened the short side, 277 cfm. This is using a 1.940 valve with a back cut. Percentage of opening is 87%. I feel there is more with the 1.940 valve. This is the first port Michael has ever ported. The exhaust started at 160 cfm using a 1.550 at 85% with a 2.0" pipe extension (header flange- from our kit). All that Michael did to the exhaust port was the blending of the chamber and of the seat area in the bowl. Exhaust port now is at 198 cfm. Both ports can take larger valves. We found that our machinist had left .045" on the deck which has the chamber at 71cc. We will fix this and are shooting for a 53-55cc chamber. Have a few other things to check and then I will have the patterns updated. Thank you all for you patience.
Having the patterns to make them flow 277 in. and 198 ex. as cast would be a great starting point! Can't wait to see what the new as cast 277 in. and 198 ex. can be ported to! Can you post the flow chart for those numbers so we can see what lifts that flow was at? Thanks!
So is this R&D before they are released to the public? Are these going to be off the shelf, bolt on performance heads? Or are we still going to have to port them after we buy them??
X2. Now is the time to get the runners & bowls fine tuned, before production. Would be nice if only minor clean up is needed, if desired. We want out of the box Super Heads!
That's what it sounds like they are doing from Mike's post? They do have the as cast technology now, you can get as cast made in USA sbc Profiler heads that use the "as cast" technology that certain sets of those heads flow around 280 intake IIRC right out of the box with zero porting! Those are very reasonably priced as well if you don't mind waiting for them because they are sold out months in advance! Casting technology has came a long way, hopefully TA's foundry uses the newer casting techniques for more consistency from head to head and better performance as well.
That would be to their advantage if they actually do that well out of the box because people will like how their engine ran so much just before they blow it up, then TA can sell them new heavy duty aftermarket rods and nice performance pistons that will handle the abuse the heads give the engine now! Plus balancers and perhaps crankshafts if the new heads are breaking those because they can't handle the N/A RPM! And when the limit for the block is found, maybe a new block with 4.00" bores like the v6 block they make has?!(lets hope if they make a new sbb 350 4.00" bore block though its out of cast iron so the little people can still afford one?) It would be a great advertisement campaign the put a big warning sign on the box to use factory rods at your own risk! Then below the warning sign, part numbers and pictures for the better rods.
I wouldn't know the first thing about pricing, but I'd pay a decent amount for an iron 350 block with room to grow.
