*Accurate average torque readings were attained after 4,000 rpm, allowing for converter lock-up (less slippage).

Note: a gain of 134 rwhp at 6,100 rpm (not peak) was realized from the previous ported-head swap, and now the roller cam.


Indy Sr Heads Flow Chart
As tested at Ray Barton Racing Engines, SuperFlow SF-600 flowbench.

LIFT .200" .300" .400" .500" .600" .700" .800"
INTAKE CFM 150 215 266 308 335 357 374
EXHAUST CFM 112 151 195 215 239 252 260

Note: To obtain similar flow and power numbers, Indy sells the SR295 CNC heads. The CNC heads will save you from many hours of porting.

SOURCE
COMP Cams Schumacher Creative Services
Seattle
WA
2-06/-364-7151
engine-swaps.com
Indy Cylinder Heads
8621 Southeastern Ave
Indianapolis
IN  46239
317-862-0224
SLP Performance Parts
1501 Industrial Way North
Toms River
NJ  08755
Ray Barton Racing Engines
Robesonia
PA
6-10/-693-5700
raybarton.com
TTI Exhaust Systems
Corona
CA
9-51/-371-4878
ttiexhaust.com