Inliners International Forums General Discussion Engines Springs for 235 and 261 Engines

Yes, info appreciated on both the Bulldog and the Schneider cams, especially the .050 lobe events.

The most solid info I have is on the 261 / early Vette cam, which is also a Clevite 229-1293:
Lift Lobe / Valve Gross
.274 .406 intake
.281 .416 exhaust
293-338 duration advertised, these are all over the map depending how they are measured since the ramps are so shallow
189-193 duration at .050" lobe intake / exhaust
110 LSA Lobe Separation Angle with 4 advance or 106 ICL Intake CenterLine

Similar info on Bulldog and Schneider appreciated.

My guess is the triple sidedraft Vette carbs would add about 4% across the board vs the twin Rochesters. Just a guess though based on other dyno comparisons and the Gonkulator.