That’s correct. The standard is a 6.535 rod. I chose a longer rod and shorter piston.
Dom, I know you would go dominator lol. I plan to do a lot of street driving and prefer a power valve.
This carb has worked well for me. I thought about trying one on the dyno but I don’t think I’ll end up doing so since I don’t plan to run one.

The dyno shop might have a dyno mule 4500 and adapter on hand if you have time and feel like seeing “what if”?

It’s not always magic.

I've run a half dozen or so 270 head combos on the dyno and they have all made more than 700 hp. Some of them with less compression and a smaller cam than what you are using. If everything else is equal in your build then I'd expect 720 hp from what you have but it always depends on the details. The carb has to be right on as does the timing and the plugs and lots of other little details.

G3 392 has 1.21", Just for the sake of comparison

Who says a p/v isn't in Dommys silly......A friend goes 7.80 in the 1/4 w/a p/v in his carb......Unless the adapter and manifold are blended, I don't expect crazy gains but if you did, you'd be amazed but then I'd go straight to a Dommy manifold w/a spacer.....

Dom, I did not know that. Maybe one of these days I’ll talk to an expert 😄.

Ray Meyers on here one Drag Week with a 1050 Dommy carb I did and got up to 16 mpg's.......

Good stuff...let us know how it does on the dyno. Personally, I'd tickle the runner dividers floor transition with a bigger radius...might help fuel distribution.

Ok guys. First pull were at 723hp@6100 and 690tq. That’s at 34 timing and 1” spacer and a 950 carb.

This is the 2nd pull. 36 timing 1” spacer. 950 carb.
729hp 680tq.

Try 32 degrees. Sometimes those TF heads like less timing.

Very nice!

I guess he has now!!

Stopped at 743hp@6100 and 699.9tq. I’ll give more details when I get home.
Didn’t try more than the 950 carb. It needed more carburetor badly.

Nice!!

740 is starting to get serious. A Dominator on a 400-3 intake would pick it up another 20 or so. We'll be running a very similar low deck 512 on the dyno soon with a 400-3 intake and a 4500 bolt pattern Holley Sniper. Expecting 750 hp from it.

X2!!

Can’t figure out how to load pics or videos.
AndyF, I have read your articles and others and didn’t want to get too optimistic. But these heads really do make serious power.
There was easily more In it. Vacuum through the carb was 1.9” and afr was 13.5. Through mufflers. I decided to stop there since I won’t be using that carb anyways. 2” spacer gained 5hp over the 1”. 38 timing over 36 only gained 1hp. BSFC was very impressive down into the 300s. Didn’t mess with valve lash or anything other than timing and spacers. Last run we cooled it down to 120 degrees.. Thats when
we made 743hp@6100 and 700tq@5000

Nice numbers. What type of fuel did you run it on???

Harley we ran it on 98 octane just for safe measure. Although dynamic compression is only 8.5 so it may run. Just fine on pump premium.