If your carb cant flow enough air, it will choke out.skinny z wrote: ↑Wed Feb 12, 2020 2:25 pmI'm not 100% sorted out at this point although it's been said this kind of combination has been done for decades. Still, I like the research side so I keep experimenting.67RS502 wrote: ↑Wed Feb 12, 2020 1:33 pmWith the 224/224 cam it is a very similar to my 383.
My heads are on the very large side for it, but still made decent power, and ran well.
It made 483hp/490tq.
Chevy II with 373s a 10" verter and a 200-4r it ran 10.90s
daily driver mellow, good power at 4000.
mph was the same shifting at 6500-6800 with big heads.
Not sure what your goals are, with a decent head it should be very similar to my combo performance wise.
That your similar to 224/224 carries up to 6500+ I suppose says something about your heads. From what I'm finding is that I can expect to run out of breath before 6000. Which is fine by me. That said, I'm also finding that I could wind it up a little tighter. A decision I'll make once I've gone over the heads to make sure I haven't messed them up in the last couple of years.
If your tune goes fat up top, it will run out
If the ports are too fast, it will choke out
Simple things like spacers and bigger carbs can help. Bring it to a chassis dyno, you wouldnt believe how much power can be made there. Air filter , air bleeds, float level adjustments. Then throw some jet back in it and tske it to the track.