SBC Intake Manifolds: Creating Another List.

[1980RS]

For the Holley fans, here is a new out-of-the-box 300-25 Strip Dominator with a 1205 gasket...

How does the 1206 gasket fit the 300-25 strip dominator ?

You will need to raise the port roof to match the 1206 gasket as the out of the box 300-25 is very close to the 1205. That's what I did one my 300-25.

[ChopperScott]

For the Holley fans, here is a new out-of-the-box 300-25 Strip Dominator with a 1205 gasket...

How does the 1206 gasket fit the 300-25 strip dominator ?

You will need to raise the port roof to match the 1206 gasket as the out of the box 300-25 is very close to the 1205. That's what I did one my 300-25.

1206...

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6901...

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[rfoll]

I was surprised how much material I had to remove from the roof to fit my Track 1 heads. A Vic Jr. is tiny compared to the 300-25. I was also surprised of the quality of the casting compared to all of the Edelbrock manifolds I have.

What surprised you concerning the quality of casting?

How does the 1206 gasket fit the 300-25 strip dominator ?

I'll head out to the garage and take a few pics.

I was surprised after looking at Edelbrock castings for so many years. Some were really terrible and didn't fit correctly.

[ChopperScott]

I was surprised how much material I had to remove from the roof to fit my Track 1 heads. A Vic Jr. is tiny compared to the 300-25. I was also surprised of the quality of the casting compared to all of the Edelbrock manifolds I have.

What surprised you concerning the quality of casting?

How does the 1206 gasket fit the 300-25 strip dominator ?

I'll head out to the garage and take a few pics.

I was surprised after looking at Edelbrock castings for so many years. Some were really terrible and didn't fit correctly.

I haven't handled enough Edelbrock manifolds to make a comparable judgement. I've read that the later Super Victor 2925 is a much better casting. As far as Holley is concerned, I can't say I'm too impressed with the castings out-of-the-box, but with a little time and effort, they could prove to be nice pieces.

[ChopperScott]

As far as Holley is concerned, I can't say I'm too impressed with the castings out-of-the-box, but with a little time and effort, they could prove to be nice pieces.

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[ChopperScott]

This one is a Mopar, raised runner manifold, modified for small block chevy, that a friend of mine had on his 434...

Mopar SBC.jpeg

[ChopperScott]

This is his current intake manifold...

Mike Thompson Intake.jpeg

[In-Tech]

-12 rails, nice

[Tom68]

This is his current intake manifold...

Mike Thompson Intake.jpeg

Like button, where's the WOW button.

Man he must be revving that high.

[ChopperScott]

This is his current intake manifold...

Mike Thompson Intake.jpeg

Like button, where's the WOW button.

Man he must be revving that high.

Mike is proficient at tuning Holley EFI with nitrous. He'll be going with a blown alcohol, ProCharger combo next time out.

MT Intake.jpeg

He runs the car to the 1/8 mile on a 275 radial...

MT Time Slip.jpeg

MT Camaro.jpeg

[1980RS]

This is his current intake manifold...

Mike Thompson Intake.jpeg

Like button, where's the WOW button.

Man he must be revving that high.

Mike is proficient at tuning Holley EFI with nitrous. He'll be going with a blown alcohol, ProCharger combo next time out.

MT Intake.jpeg


He runs the car to the 1/8 mile on a 275 radial...


MT Time Slip.jpeg

MT Camaro.jpeg

He must have let off the throttle on that run buy the 1/8 to 1/4 mph. Nice time though.

[skinny z]

He must have let off the throttle on that run buy the 1/8 to 1/4 mph. Nice time though.

Yep. By my reckoning it takes about 3 seconds to cover the eighth mile at 145 MPH.

[ChopperScott]

He must have let off the throttle on that run buy the 1/8 to 1/4 mph. Nice time though.

Yep. By my reckoning it takes about 3 seconds to cover the eighth mile at 145 MPH.

He definitely cruised to the 1/4. It would have spit out the bottom end if he stayed on the throttle. He tells people it's a 327.

[ChopperScott]

I didn't want to give up on the Holley 300-110. Even though I tried it with two sets of 1206 gaskets (2 x .060), I decided to order a set of of 1266 gaskets (.120). After further inspection, I'm confident it will work. I will just need to be careful with the roof on the one set of runners when matching.

300-110 1266.JPG

[Bigchief632]

This is his current intake manifold...

Mike Thompson Intake.jpeg

That intake works great if you want your TQ to peak higher than your hp. For his procharged methanol deal, it won't matter though. Might actually help.