holly warning...

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Jul 29, 2003 | 04:22 PM

cr125r

Thread Starter

Member

Joined: Jan 2003

Posts: 266

Likes: 0

From: Ringwood, NJ

Car: 1988 trans am

Engine: 5.7 gm H.O. crate engine

Transmission: 700r4

holly warning...

i have a holly 650 dp with mechanical secondaries. i was reading in the begining of the manual and it says not to use it on an auto tranny with overdrive...why? it says it WILL ruin it, i dont see how a carb could do such a thing.

also, my gas mielage sucks royally (not complaining) and ive heard its mainly due to the accelerator pump in the secondaries. would switching to a smaller size help? what would happen if i disconnected it all together? i know it would bring down power but could i? thanks

Jul 29, 2003 | 11:48 PM

dans82bird

Senior Member

Joined: Jan 2001

Posts: 908

Likes: 0

From: South NJ

Car: 1988 Mustang GT

Engine: 302

Transmission: T5

If I were you I'd stick with a 600 vac. secondary carb.

Jul 30, 2003 | 12:53 AM

Apeiron

Moderator

Joined: Jan 2000

Posts: 20,981

Likes: 11

From: Mercedes Norte, Heredia, Costa Rica

Car: 1984 Z28 Hardtop

Engine: 383 Carb

Transmission: 4L60

Axle/Gears: 3.54 Dana 44

Re: holly warning...

Quote:

Originally posted by cr125r
i have a holly 650 dp with mechanical secondaries. i was reading in the begining of the manual and it says not to use it on an auto tranny with overdrive...why? it says it WILL ruin it, i dont see how a carb could do such a thing.

The throttle arm doesn't have the correct geometry to properly operate the transmission throttle valve cable.