Holley 300-261
Moderator: Team
Holley 300-261
Anyone here have any experience with this manifold -------Considering for a 2 bbl 500cfm drag motor 360ci 9.8-1 262/266 .550lift ported 441 heads currently using Victor 4x4--RPM Range 5000-7300---Dyno 452@6200rpm Have also considered VicJr Thanks for any feedback
Re: Holley 300-261
What is the port opening size as ported on your 441 heads?
Do you know the flow numbers for your valve size as ported?
Do you know the flow numbers for your valve size as ported?
The Older I Get, The Dumber I Get
Re: Holley 300-261
Use the Holley 300-110 intake with a taller height and better transition from a 2 barrel adapter.
You will be glad you did!
You will be glad you did!
The Older I Get, The Dumber I Get
Re: Holley 300-261
I ran that Victor 4+4 years ago and almost any manifold is better that that. For instance, I borrowed a Vic Jr and it was .15 quicker than the 4+4, had to return the Vic Jr and the car slowed down .15
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Re: Holley 300-261
On the 4412 carbed circle track engine we dyno tested it ... the Professional Products #52032 was slightly more powerful everywhere at wide open throttle. Part throttle transition and driving quality were not tested and that sometimes means more than a little bit of power.
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Specialty engine building at its finest.
Specialty engine building at its finest.
Re: Holley 300-261
I saw something on FB bout this intake the other day and almost made my own post, thought it said it was new. I'd like to see a test vs a air gap style high rise dual plane with a more street/strip combo, hardcore race combos will still favor the larger single planes I bet.
https://www.holley.com/products/intakes ... ts/300-261 300-260 is the multi port version
https://www.holley.com/products/intakes ... ts/300-261 300-260 is the multi port version
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I know as much as I can learn and try to keep an open mind to anything!
If I didn't overthink stuff I wouldn't be on speedtalk!
I know as much as I can learn and try to keep an open mind to anything!
If I didn't overthink stuff I wouldn't be on speedtalk!