right now i have the basic LO3 but in november im swapping it out and dropping in an 87 350...the 350 is basically stock. it has a edelbrock manifold on it that i am getting an adapter for so i can keep TBI. Is that a bad idea?
my mods are in my sig. I am going to get a custom chip burned after the 350 goes in too.
so j/w what would i run after this swap?
im assuming i would run mid to low 15 right now.

 

If it were me...and it was with my 89 TA once....I'd get rid of the TBI and go carb'd.

 

i have to keep it for emmsions...

 

actually im thinking about a carb now.. lol how much hp would i have and what would i run with a carb?

 

now that i think about it. i might go carb.
what would i run with a carb?
how much hp you think i would have?

 

why would you have to keep the TBI for emissions? you must live in some goofy place like california. lol. It's hard to say what you would run. it would all depend on the rest of your engine, rear gears, tranny. a lot of variables. when I took the 305 TBI out of my 89 and put in a 350 carb I used a basicly stock 350 from an older TA that already had a carb. I put on an edlebrock carb, 400 heads, and a new water pump and alt. I had a rebuilt 700r4 tranny and 3.23 rear end. It ran 0-60 in about 7-8 seconds. but I never had it dynoed so I'm not sure about the HP. But I'm going to assume not much...maybe around 250-300. but carb is always better than TBI...in my opinion anyway...I got rid of a TPI setup for a carb in my girlfriends camaro.

 

ok thanks. so ill basically have the same thing as you had except 3.73's

 

yup.

 

Wow your 15! Look kid can you make some money about $700? If you can buy these heads:

eBay Motors: VORTEC PERFORMANCE 350 CHEVY CHEVROLET CYLINDER HEADS (item 250018449275 end time Aug-24-06 06:17:28 PDT)

Then buy a cam a XE268 or 274 there pretty cheap. Just don't put a stock 350 in, your not going to be running any faster than you are now.

 

it's true. if you want performance then you need to put some money into it.

 

TBI is junk for performance (sorry TBI fans). It only makes power to 4000 rpm's if you're lucky. If you're upgrading to a 350, obviously to make more power, then you need a carb. Score yourself like a Edelbrock top end kit (cam, carb and intake kit) and don't look back except to look at your competition. Have fun

 

Thanks guys. I am looking around for some fast burn heads or somethin like what that link was for. I'll also save up for a cam...maybe an LT1 cam or something.

 

There are way better cams out there than a Lt1 cam. A ZZ4 cam is better and cheap too.

 

Your ignorance overwhelms.......

Many tbi guys have pulled to 6k rpms and the stock setup pulls to 5.5k fairly well other than week valve springs and tiny cam......

Tpi is what has problems with revs. They are usually very rev limited by their manifold design to around 5k (or about 1000 rpms more depending on how much money you spend in to modding it out). Although they are far from a bad setup and are very torquey because, of that manifold design.

Btw tbi is efi (electronic fuel injection) so it meters the fuel much better than a carb could ever do which means better drivability, better economy, and if in perfect tune better hp and torque than a carb setup too.

Btw edelbrock is known for manifolds, and carb designs definetly not their cams. Lunati makes better cams as well as comp cams both for reasonable ammounts of money and will net ypou better driability and power than a comparable edelbrock cam.

 

I'll admit, I don't have too much experience in tuning TBI cars, but I did own two (89 s-10 4.3 TBI and 91 RS vert. 5.0 TBI). Sorry for jacking your post, but this could be informative. I know the injectors obstruct airflow into the engine so my questions are: How much cfm does the stock TBI flow? Can it be modified to flow more? Can the injectors prvoide sufficent fuel to handle a modded 350? And after all is said and done, is it gonna make the power that a carbed setup would and for more or less $$$? Again not starting a war, just curious. Thanks for both your time. Later

 

The stock injectors can't handle it. I would have to upgrade to some off of a 350. A carb would be cheaper but if I spent the money TBI would be better. I would also need a new probably burnt chip. The injectors aren't that much in the way. You can buy a spacer that raises them up a bit and supposedly gives it better flow. I doubt you could see a difference. If you do all the ultimate TBI mods it would flow extremely well.