gf got me the Holley TBI replacement unit for my 305 which intake would you guys recommend using with minimal mods to getting it working right. Plus my ecu is on the fritz is there any other TBI ecu's I could use to replace my 89 305 model?

 

I might be wrong on this, but im pretty sure that the holey TBI unit is too much for a 305. You could actually hurt your performance by using it. The stock ones are good up to about 300hp.

 

So should I return it? Or what I mean i dont think it could be that bad, but what intake could i use with it... that i dont gotta **** there and work with it for hrs on end to work...

 

Which tb did you buy from Holley? The one with an 1-11/16" bore or the 2" bore one? The smaller one will work fine on a 305, the larger one will take a lot more work. As for which intake you need depends on which tb you have. The smaller tbi will work well on either a Edelbrock or Holley tbi intake or a fourbarrel intake with an adapter plate. If you have the 2" tb then you lose the option of the Edelbrock tbi intake unless you want to bore out the holes to 2"s and thats too much work to be an economical alternative.

Steve

 

I beleive its the one with the 2" bores, but I will return it and get the one with the smaller bores if some1 had the part # for it... Because I would rather go with the edelbrock intake to install because I hear its a breeze. So if yas could get me the part # for the smaller bore unit that would be gr8.. Also my ecu is kinda dead do to wet leaking in on it. Which alt. could I use its a 89 305 L03 engine. Thanx Guys

 

I would stick with the stock GM TBI unit if I were you. In un-tuned form I'm running 14.77 with a 3500+lb race weight with the stock TBI. Spend your money else where. I agree with the above post that the stock TBI can probably support 300hp of airflow (you will need good ported or aftermarket heads to make that much power in a 305).

 

You can use any 89 thru 92 746ecm out of a camaro or caprice.

Steve

 

Ok so im gonna go ahead send the TBI unit back swap it for the edelbrock intake. now with the ecu issue I can get one from a 91 caprice but i believe its a 350. Wont my car run rich as a ****... or can i use the general ECU and put my 305 chip in it???

 

YES, all the 746 ECUs are the same, the chip contains the program for your specific combo. Get the ECU and swap in your chip you already have.