Dyno testing a stock(?) 1972 440

Let's do the cam and carburetor swap side by side.

Installed the 509 and then installed an 850 cfm Mighty Demon. The fuel lines for the Demon hit the ignition coil towers so I just slipped a 2" Super Sucker 4 into 1 carburetor spacer between the intake and carb to get some clearance.

........................509........................850 carb & spacer

RPM.................TQ/HP...........................TQ/HP

2500...............360/171.........................359/171
2600...............371/183.........................373/184
2700...............384/197.........................382/196
2800...............396/211.........................392/209
2900...............407/225.........................412/227
3000...............409/234.........................431/246 oh oh, whats happening?
3100...............415/245.........................441/261
3200...............425/259.........................442/269
3300...............436/274 max TQ..............450/283 max TQ
3400...............432/280.........................449/290
3500...............432/288.........................441/294
3600...............430/295.........................436/299
3700...............428/302.........................435/306
3800...............425/307.........................430/311
3900...............421/312.........................434/322
4000...............419/319.........................438/333 we're getting there
4100...............419/327.........................445/347
4200...............419/335.........................444/355 yeah!
4300...............416/341.........................443/362
4400...............412/345.........................434/363
4500...............403/346.........................432/370
4600...............399/349.........................429/376
4700...............400/358.........................427/382
4800...............389/356.........................419/383
4900...............388/362 max HP..............415/387 max HP, heh heh 7.45:1 compression
5000...............377/359.........................405/386
5100...............366/355.........................391/379
5200...............359/355.........................383/379
5300...............345/348.........................374/377
5400...................................................361/372

We gave it some air and it won't quit pulling. Wait until you see the torque curve with the cylinder heads! Low compression FREIGHT TRAIN!