edelbbock carbs

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Frankshaft
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Re: edelbbock carbs

Post by Frankshaft » Mon Jul 16, 2018 8:17 am

F-BIRD'88 wrote:
Mon Jul 16, 2018 12:13 am
The ignorance and thus mis information is really thick here.

The 4-71 on a basic 454 is more than capable of a real deal 650+++hp
on pump gas. Do not choke off with a small carb or small carbs.
Use 2x650's minimum. 2x750's is JUST right.
Drive the 4-71 blower at a 1.3:1 to 1.6:1 drive ratio on the 454.
this is no where near excessive.
Use a ready available off the shelf cam such as a Comp XE284H-10 hyd flat tappet
or A comp XR 286R-10 solid street roller cam.
These are both great on street blower 454's
The edelbrocks are very easy to set up for roots supercharging.
The only real critical thing is the power piston spring choice
Use the 10.5" vacuum rated springs in the carbs.
Carbs will need rejetting.
Edelbrock carbs do not like big fuel pressure 5.5psi at idle is great.
Yes you want a low cr for pump gas. 7.5 to 8.5:1
Home ported 049 or 781 oval port heads with larger 2.19x1.88 valves are fine. Use with flat top forged pistons for a street blower friendly low cr.
It will make big power and plenty boost 7psi is plenty on pump gas.
Ignorance and misinformation? LOL now that's funny. What do you actually build?

Walter R. Malik
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Re: edelbbock carbs

Post by Walter R. Malik » Mon Jul 16, 2018 9:53 am

Frankshaft wrote:
Mon Jul 16, 2018 8:17 am
F-BIRD'88 wrote:
Mon Jul 16, 2018 12:13 am
The ignorance and thus mis information is really thick here.

The 4-71 on a basic 454 is more than capable of a real deal 650+++hp
on pump gas. Do not choke off with a small carb or small carbs.
Use 2x650's minimum. 2x750's is JUST right.
Drive the 4-71 blower at a 1.3:1 to 1.6:1 drive ratio on the 454.
this is no where near excessive.
Use a ready available off the shelf cam such as a Comp XE284H-10 hyd flat tappet
or A comp XR 286R-10 solid street roller cam.
These are both great on street blower 454's
The edelbrocks are very easy to set up for roots supercharging.
The only real critical thing is the power piston spring choice
Use the 10.5" vacuum rated springs in the carbs.
Carbs will need rejetting.
Edelbrock carbs do not like big fuel pressure 5.5psi at idle is great.
Yes you want a low cr for pump gas. 7.5 to 8.5:1
Home ported 049 or 781 oval port heads with larger 2.19x1.88 valves are fine. Use with flat top forged pistons for a street blower friendly low cr.
It will make big power and plenty boost 7psi is plenty on pump gas.
Ignorance and misinformation? LOL now that's funny. What do you actually build?
Maybe one day he will actually try and go there ... then he MIGHT even learn something.
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Specialty engine building at its finest.

Frankshaft
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Re: edelbbock carbs

Post by Frankshaft » Mon Jul 16, 2018 10:20 am

Geoff2 wrote:
Mon Jul 16, 2018 5:16 am
Agree, use the Edel or original AFBs. Keep the Holleys for door stops....
Lol. That's even funnier than above.

pdq67
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Re: edelbbock carbs

Post by pdq67 » Mon Jul 16, 2018 1:42 pm

I was SOOO hoping that E-Brock was going to try to, "cover/capture", the aftermarket OEM carb market once they grabbed the Q-Jet stuff.

You know, WCFB's, AFB's, Q-Jets, T-Quad's, Autolites, 2G and 2GC 2-barrel, Stromberg 94 and 97's and so on. Everything but the many Holley carbs..

But Speedy Bill ended up with the Stromberg's and E-Brock canned the Q-Jet stuff so go figure...

I do figure that we really do need a GOOD reasonably priced source of OEM copies of our old carbs is why I mention all this.

pdq67

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