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TJR · 04-23-2001, 10:44 PM

I got the new issue the other day, and was curious if anyone saw part I of the new series on flow testing of the small block heads? Generally,I take the data printed in the magazines with a "grain of salt", but I think these numbers seem reasonable. I know flow isn't everything but here are some points of interest:

- The old GT-40 heads flowed better than the GT-40P throughout the entire range(both intake & exhaust)

- The Holley (20 degree) heads peaked at .400 lift intake.

- The TFS heads out flowed the AFR (165) up to .500 intake. The AFRs put up some impressive exhaust flow numbers (over 180 cfm from .500 - .700 valve lift).

Overall, I thought it was a pretty informative article and am looking forward to next months issue. I would of liked to see the Edlebrock Performers tested, they quoted the manufactures peak numbers (226 cfm int./175 cfm exh.@.600) but didn't test them. The Brodix ST 5.0 heads looked pretty good, but the TFS heads might be in the near future.

T.J.

------------------
1989 lx notch
89,000 miles
bolt-ons,stock heads/cam
60'- 2.07, 8.90@78, 13.93@99

[This message has been edited by TJR (edited 04-23-2001).]

[This message has been edited by TJR (edited 04-23-2001).]

[This message has been edited by TJR (edited 04-24-2001).]

04-23-2001, 10:44 PM	#1
TJR Registered Member Join Date: Apr 2001 Location: Bowling Green, OH Posts: 270	Muscle Mustang & Fast Fords I got the new issue the other day, and was curious if anyone saw part I of the new series on flow testing of the small block heads? Generally,I take the data printed in the magazines with a "grain of salt", but I think these numbers seem reasonable. I know flow isn't everything but here are some points of interest: - The old GT-40 heads flowed better than the GT-40P throughout the entire range(both intake & exhaust) - The Holley (20 degree) heads peaked at .400 lift intake. - The TFS heads out flowed the AFR (165) up to .500 intake. The AFRs put up some impressive exhaust flow numbers (over 180 cfm from .500 - .700 valve lift). Overall, I thought it was a pretty informative article and am looking forward to next months issue. I would of liked to see the Edlebrock Performers tested, they quoted the manufactures peak numbers (226 cfm int./175 cfm exh.@.600) but didn't test them. The Brodix ST 5.0 heads looked pretty good, but the TFS heads might be in the near future. T.J. ------------------ 1989 lx notch 89,000 miles bolt-ons,stock heads/cam 60'- 2.07, 8.90@78, 13.93@99 [This message has been edited by TJR (edited 04-23-2001).] [This message has been edited by TJR (edited 04-23-2001).] [This message has been edited by TJR (edited 04-24-2001).]