Stock 416 head flow numbers here
10-18-2010, 08:40 AM
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Car: 1989 G92 IROC-Z
Engine: 5 Liter 305
Transmission: T5
Axle/Gears: 3.45
Stock 416 head flow numbers here
People have been asking, and after I have looked for months, there is not a single thread that has the direct 416 flow bench data on TGO??? The other threads I have found show 081's, which are shown to be a little better than these in this test. Brzezinski's cylinder heads show 165/115 @.400" anyway...
stock 416s, right off the motor, untouched. tested at 28" on superflow SF600 bench, 4.06 bore. clay radius @ intake port, no pipe on exhaust.
IN EX
.1- 49/41
.2- 103/82
.3- 153/105
.4- 180/115
.5- 184/118
.6- 185/120
Thanks to "big orange" @ chevelle tech.
This should give people looking a decent reference to a stock 416 305 HO head.
stock 416s, right off the motor, untouched. tested at 28" on superflow SF600 bench, 4.06 bore. clay radius @ intake port, no pipe on exhaust.
IN EX
.1- 49/41
.2- 103/82
.3- 153/105
.4- 180/115
.5- 184/118
.6- 185/120
Thanks to "big orange" @ chevelle tech.
This should give people looking a decent reference to a stock 416 305 HO head.
Last edited by TxTtopZ; 10-18-2010 at 08:50 AM.
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