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Years ago my car ran 11.87 at 111.9 mph w/ a set of bone stock 906 heads on a 509/292 MP cammed 440. I switched to a set of mildly home ported 915 closed chamber heads...no other changes and the car ran 11.40 at 117.4 mph in similar conditions. That gain in flow and a little compression REALLY woke it up. Was a whole different animal.

tell me more, what was the rest of the combo?


440, stock crank, heavy 6 pack rods, Ross flattops, ported 915s, MP 509/292 hyd. cam, stock rockers and pushrods, Edelbrock Performer RPM intake, 830 holley DP, 1 7/8" headers, 3" exhaust w/ 2 chamber flowmasters.
727 w/ 10" TCI Streetfighter converter (around 3500 stall), 4.10 gear, 28x10 slicks.
The car weighed 3700 lbs w/ me in it back then. Drove it on the street all the time.
Went 11.40 at 117.4 mph on motor and mid 10s on a small nitrous hit. Had a lot of fun w/ that combo.



do you know what the compression was with that combo? what the compression height of those pistons were? I also have a heavy bottom end with the TRW 6-pack pistons. I cant remember how far down in the hole these pistons are but the compression height i think is 2.062 and with my stock 452 heads is at 9.4:1. I wish i would have gone with that 292/509 cam instead of the 284/484 as i have heard of lots of fast combos with that cam. Im willing to change the combo up some to get it faster and more matched but would like to keep the bottom end as-is. Its only got about 500 miles on it since i built it several years ago.