I just got my hands on a used Edelbrock TBI intake manifold and there is a 1/4" x 1/2" hole punched into the side of each throttle bore. Does anyone know if this is the stock condition or why someone would want to modify it as such? Should I leave it be or get the small holes welded shut?

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92 Camaro RS LO3, 5-spd, T-tops
Performance:
SLP 1 3/4" Headers (Coated by Paul Barry Motorsports), Flowmaster Catback Exhaust, Fastchip Performance PROM, Centerforce Dual Friction Clutch, Xact 8mm wires, Open Air Element w/K&N Filter, Z28 Grille w/aftmkt fog lamps
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, Edelbrock performer intake

 

Could those holes be from a NOS setup of some sort?

 

Can you post a Pic. so we can see what your talking about?

 

Aluminum termites huh....must be a Canadian thing.

The holes don't seem to serve any purpose. I guess I'll just take it down to a machine shop to get it shut. At least I know for sure that I can't bore out the holes to 2"...not because of the throttle body screws, but because the metal around the throttle bores is too thin.

 

Could somebody explain to me how to post a pic on this board?

 

OK, I talked with a guy who works at a machine shop and he said that he had seen holes like that before but did not know why they were put there. If someone would be so kind to explain to me how to post pictures I can show everyone what I am talking about. I would really like to get some input on this.

 

could have been for nos or vacuum something?

 

Not sure what they are there for but I have spare stock intake in the garage that has the same things.

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CD Smalley

[This message has been edited by NotDadsW41 (edited March 16, 2001).]

 

To post a picture you need to have the picture online somewhere. Get an account with geocities or something like that. Then upload the picture to there servers the same way you would upload the picture for a website. Then use the UBB code {img}http://.....{/img} replace { with [ and } with ], it's that easy.

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, Jon (91 RS too many mods to list)