Holley 300-133
11-07-2014, 10:32 PM
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Holley 300-133 Anyone seen dyno of the Holley 300-133 dual four med rise dual plane intake?
I'm thinking of running this with two Holley 0-9776 465cfm mech secondary carbs. The engine is an LS3 with forged flat tops. 2600# car with T56. 4.56 gear. Also looking at a custom cam and using dual spring kit from Tooly with titanium retainers.
Aleck
I'm thinking of running this with two Holley 0-9776 465cfm mech secondary carbs. The engine is an LS3 with forged flat tops. 2600# car with T56. 4.56 gear. Also looking at a custom cam and using dual spring kit from Tooly with titanium retainers.
Aleck
11-08-2014, 03:01 PM
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I have been eye-balling that intake myself. For a spare engine for my '61, I have an LS2 and some 1 7/8" Heddman BRP fenderwell headers. I thought it may be fun to swap to an LS platform sometimes for just driving around. Maybe fab some coil covers from an old set of 348 valve covers so it looks like the 409 @ first glance??
I have a dual quad 409 (478" W-motor, 2" Jardine Fenderwell headers) with Edelbrock 600's (holley's won't fit the stock intake..not much else available) and I could probably just use the same carb's, lines, linkage set-up.
I have a dual quad 409 (478" W-motor, 2" Jardine Fenderwell headers) with Edelbrock 600's (holley's won't fit the stock intake..not much else available) and I could probably just use the same carb's, lines, linkage set-up.
11-08-2014, 10:28 PM
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Pretty picture is about 26 years old. Wish it was still that nice, but it will be again. Has been with me through a divorce, 4 kids of my own and now have 3 more with my wife.
The rat motor is an all iron 427.
The 409 is a friend's, but mine will look exactly the same externally except it will have an aluminum water pump and GM dual quad intake instead of the Edelbrock intake. Mine isn't together yet, so no pictures of it to post.
The wrapped up crate in the background of the "pole barn" picture has the LS2 in it.
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11-08-2014, 11:00 PM
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Thanks! Have admired your Buick for years. Reminds me of a similar one from way back that had a GN engine.
The 427 (433") is a little too nasty for a driver with 13.5:1 and aluminum rods. I went low 7's @ 96 with a lousy 1.76 - 60' with it and the original suspension.
The 409 W (474") will be 11.5:1 and slightly milder....along with weighing nearly 100 pounds less than the iron big block. I'm hoping to get equal or better power out of it and put the car back on the street occasionally.
If I ever get around to the (carb'd) LS2, it may get a pair of L92 heads I have stashed - and it will weigh around 150-175 pounds less than the iron 427. Probably will be down 100 HP in comparison too, but should be able to make long distance trips without a hitch.
A friend told me I need Velcro engine mounts.
The 427 (433") is a little too nasty for a driver with 13.5:1 and aluminum rods. I went low 7's @ 96 with a lousy 1.76 - 60' with it and the original suspension.
The 409 W (474") will be 11.5:1 and slightly milder....along with weighing nearly 100 pounds less than the iron big block. I'm hoping to get equal or better power out of it and put the car back on the street occasionally.
If I ever get around to the (carb'd) LS2, it may get a pair of L92 heads I have stashed - and it will weigh around 150-175 pounds less than the iron 427. Probably will be down 100 HP in comparison too, but should be able to make long distance trips without a hitch.
A friend told me I need Velcro engine mounts.
Last edited by 1961ba427; 11-08-2014 at 11:26 PM.
