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MAURICE BLENDHEIM · 05-10-2014, 12:09 PM

Richie…The old Holley intakes were either a 300-2 or a 300-25 (look on the bottom for numbers). The early 300-2's were shorter and were described to work better with manual transmissions. The 300-25 offered better design to enhance torque curve and referred for automatics. The 300-2 was advertised for 3500-7500 RPM and the 300-25 was 4500-7600 RPM. Both manifolds hold themselves to 8000 RPM. The 300-25 is the preferred design. Our results have shown a more broad torque over the Victor JR. (3500-8000). Hope this helps…Maurice.

05-10-2014, 12:09 PM	#2
MAURICE BLENDHEIM Senior Member Join Date: Jun 2011 Location: Langley (no igloos), British Columbia, Canada Posts: 569 Likes: 311 Liked 285 Times in 87 Posts	Re: Sbc holley intake Richie…The old Holley intakes were either a 300-2 or a 300-25 (look on the bottom for numbers). The early 300-2's were shorter and were described to work better with manual transmissions. The 300-25 offered better design to enhance torque curve and referred for automatics. The 300-2 was advertised for 3500-7500 RPM and the 300-25 was 4500-7600 RPM. Both manifolds hold themselves to 8000 RPM. The 300-25 is the preferred design. Our results have shown a more broad torque over the Victor JR. (3500-8000). Hope this helps…Maurice.