They are 500 cfm Edelbrock carbs. Part number 1804. They've worked pretty well in the past on cross rams or tunnel rams so I think they'll work well here too.

I have a couple of the solid plates on hand for low deck engines. I'll have RB plates in stock in a few weeks.

Great, put me down for one, probably get a timing cover, too. I better go check your site for what else I want/need. Thanks for reply, I'll keep a lookout.

Have you done any mods to them, beyond jets/metering rods?

Not even sure we changed metering rods. According to my notes the only change last time was to put larger jets on the secondary side.

This is a 700 hp engine so each carb is only feeding 350 hp which seems reasonable for a 500 cfm carb. According to the mass airflow the engine uses 900 cfm at 7000 rpm so dual 500 carbs should work fine. I do have dual 800 Edelbrocks that I can throw on there if I want. I suppose that might be an interesting test.

Well,I've read this entire thread in bits over the last few days.Great to see this cylinder head available and nice to hear about the good quality as delivered.Thanks for all the input from everyone,builders,tuners,racers and others using the heads.And AndyF,nice to see you continuing to design parts to fit new products,nice stuff! Good read,RT

I am just now starting the assembly of my new Trick Flow headed 512 lo deck motor for my 76 dart drag car, I am taking picturs and documenting information as I go along and will one day post it all here and then give track results in the spring,,,,at least that's the plan. going to be a busy winter.

Andy, any thoughts on using the Holley 1000 CFM annular carbs. yet to test with?

Not even going to try to use those carbs. I looked them over and the jetting is so far off from stock I didn't want to touch them. Looks to me like maybe they were set up for Q16 or E80 or something like that. Did not appear to be a race gas tune. I just unbolted them and put them in a box for safekeeping.

The engine ran great with these 500 cfm Edelbrock carbs. Every time I swap over from Holley carbs to Edelbrock carbs I'm amazed at how much smoother the engine runs. For an engine like this the dual Edelbrocks are probably tough to beat. If I had a pair of 600 Edelbrocks I'd try them but I doubt this engine would make any more power.

Just a quick one Andy. Where would be the best place to buy a set of these heads ?

Probably with a 10% off coupon from Summit.

Summit owns Trick Flow so I'd think Summit is going to have the best prices.

Those carbs came off of Mike Swanns old PSCA heads up car, they where modded by some shop down south in SO CA, probally C&J engr.
I had loaned one them out to a local bracket racer and I didn't think to check to see if they jet extensions on them, they didn't, and that made it bog off the line a tiny bit but it ran more MPH and quicker ET than his 950 HP did at Woodburn on back to back runs
Mike didn't seem to like them back then due to the annular boosters according to him

Al ,
you get a Summit pro shop discount with your ANDRA licence now . used to have to ring for a coupon number .

Tex

Here is a pull with the tunnel ram. Fairly boring until the end when the carb linkage falls off.

https://youtu.be/jOeDF7DjSgI

Doh!, you could have held off posting THAT video.

I had a set of TF heads matched up to a 337 intake.
Larry Smith from Flow2Tech Cylinder heads in NC did the work. Here are the numbers.
In. Ex.
1.99 63
2. 170 126
3. 243 165
4. 306 192
5. 340 210
6. 352 222
7. 370 231
This is cfm the intake ports are 246 cc

Those are pretty good numbers for only opening the head up a little bit. I'd like to do that with my heads but then I'd have to go round up some different intake manifolds and start all over again.

This looks interesting.
https://static.trickflow.com/pdf/TFS_Dealer_Sheets_Rev11.pdf

Looks like they just opened up the intake ports, the exhaust #s are the same.
Andy, do you have any head to head numbers on the combo? How much would this run in approx $. Thanks, Steve
BTW the spring and retainers look great!