Hey Bugz:
The 1403 Edelbrock w electric choke is the carb I put on my stroker 331.
The engine had a bit of hesitation going uphill on part throttle, and the
tuning grid in the manual recommended specific changes which were possible
using the tuning kit you recommended. These changes were spot on, and the
hesitation disappeared.
As a bonus, my gas mileage went from 12 mpg to 25 mpg (Canadian Gallon) on
long (1500 mile) trips, so you can imagine how much my ancient 600 cfm
Holley was leaking.
BTW, on the dyno I got 317 hp @ 5200 rpm, with the torque running from 345
to 349 ft lbs from 3,000 to 5,000 rpm. Flat as the desert in Az. Awesome
street engine.
Its a great carb!
Dave
----- Original Message -----
Sent: Monday, July 19, 2010 2:40 PM
Subject: Re: [Tigers] "POS" carb
> Allan,
> The "little" Edelbrock is a great choice for a mild 260/289. I have had
> a 1403 (electric choke version) on one of my cars for seven years
> without issues. I wound up changing the needle and spring combination on
> the primaries and one step smaller jets in the secondaries to lean it
> out slightly. Your engine may/will have different needs, especially if
> you have tubular headers and a lumpy cam. I like them so much I just
> bought a 1406 (600 CFM Electric choke) carb for my stroker project.
>
> Buy the tuning calibration kit (part # 1486), it has all you need to get
> the mixture dialed in. The stock SU fuel pump is marginal for this size
> carb, I could drain the bowls on a hard third/fourth gear pull. I
> switched to a Holley Red Head fuel pump and that cured the delivery
> issue.
>
> Be sure to carefully check your stack-up height with your new manifold,
> some engine mounts are taller than others and with a F4B in place your
> air cleaner might be interfering with the hood. Swipe some Playdoh from
> the brat next door, put a ball of it onto the air cleaner and carefully
> close your hood. You need a minimum of 1/4" clearance, more is better. I
> had to go to a flathead screw for my air cleaner to gain enough room.
>
> Have fun, go fast!
>
> Bugz
_______________________________________________
Tigers@autox.team.net
Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
|