Bee Jay's throttle linkeage mod
07-14-2016, 12:47 AM
#1
Safety Car
Thread Starter
Member Since: Nov 2005
Location: Lompoc, CA. Santa Barbara County
Posts: 3,932
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Bee Jay's throttle linkeage mod
Here is a mod that really works.
I built this 383 engine this past winter. The good thing about this monster, is that it makes tremendous torque and horsepower right off of idle. The bad thing is, it makes tremendous torque and power right off of idle. It takes very little throttle to burn rubber and launch like a drag race. This is no fun when just cruising. The throttle is an on off switch. The original carb was a Quadrajet, and you would have to put the throttle half way down before the secondaries would even start opening. Not so with this Holley 4Di fuel injection. The secondaries are not progressive and all four blades start opening all at once. My friend, Wild Gill, built this bracket for me that moves the throttle cable mount point 14 mm up and 10 mm back, slowing the throttle action significantly. What a difference! I have more control over the throttle now and can enjoy this monster engine. The car is much more enjoyable to drive, and I can modulate right up to traction loss, or I can mash it and burn.
I built this 383 engine this past winter. The good thing about this monster, is that it makes tremendous torque and horsepower right off of idle. The bad thing is, it makes tremendous torque and power right off of idle. It takes very little throttle to burn rubber and launch like a drag race. This is no fun when just cruising. The throttle is an on off switch. The original carb was a Quadrajet, and you would have to put the throttle half way down before the secondaries would even start opening. Not so with this Holley 4Di fuel injection. The secondaries are not progressive and all four blades start opening all at once. My friend, Wild Gill, built this bracket for me that moves the throttle cable mount point 14 mm up and 10 mm back, slowing the throttle action significantly. What a difference! I have more control over the throttle now and can enjoy this monster engine. The car is much more enjoyable to drive, and I can modulate right up to traction loss, or I can mash it and burn.
07-14-2016, 10:49 AM
#3
Safety Car
With the throttle cable moved upwards and a longer throw or further away from the pivot point, do you still get full opening with the pedal on the floor? Looks nice!
07-14-2016, 12:04 PM
#4
Team Owner
Nice part fabrication!
I noticed that your temp sender is on the side of your AFR head right next to the header flange. Like mine used to be. I thought mine read artificially high.........................
silly me i see that you moved it in the bottom picture to your tall manifold filler housing
I don't think that I am pit crewing this year at the Rolex Laguna Seca event unless things change. Intrepid just brings about 6-7 cars these years and the boss sold his Lola t286.
http://tech-racingcars.wikidot.com/lola-t286
I noticed that your temp sender is on the side of your AFR head right next to the header flange. Like mine used to be. I thought mine read artificially high.........................
silly me i see that you moved it in the bottom picture to your tall manifold filler housing
I don't think that I am pit crewing this year at the Rolex Laguna Seca event unless things change. Intrepid just brings about 6-7 cars these years and the boss sold his Lola t286.
http://tech-racingcars.wikidot.com/lola-t286
07-14-2016, 02:18 PM
#6
Safety Car
Thread Starter
Member Since: Nov 2005
Location: Lompoc, CA. Santa Barbara County
Posts: 3,932
Received 543 Likes
on
198 Posts
Nice part fabrication!
I noticed that your temp sender is on the side of your AFR head right next to the header flange. Like mine used to be. I thought mine read artificially high.........................
silly me i see that you moved it in the bottom picture to your tall manifold filler housing
I don't think that I am pit crewing this year at the Rolex Laguna Seca event unless things change. Intrepid just brings about 6-7 cars these years and the boss sold his Lola t286.
http://tech-racingcars.wikidot.com/lola-t286
I noticed that your temp sender is on the side of your AFR head right next to the header flange. Like mine used to be. I thought mine read artificially high.........................
silly me i see that you moved it in the bottom picture to your tall manifold filler housing
I don't think that I am pit crewing this year at the Rolex Laguna Seca event unless things change. Intrepid just brings about 6-7 cars these years and the boss sold his Lola t286.
http://tech-racingcars.wikidot.com/lola-t286
That sensor is just for turning on the fans. I've since grounded the wire so that the fans are on anytime the ignition is on. I was really worried about this 383 beast overheating.
Last edited by Bee Jay; 07-14-2016 at 02:20 PM.
