Floorman279

For a while i was wanting to convert to carb just becuase they allow the motor to breath better and i like the performance of carbs. i was looking at my jegs mag and saw this

http://www.bbkperformance.com/produc...ttle-body.html

Let me know if this is worth the price i can't decide thanks.

FlamedROC

52mm would be a nice upgrade if you have done a few mods already. Such as headers, exhaust, intake mild cam etc. a 58mm is only really needed when you are running a mini ram or like intake bigger cam, built lower end of the engine etc. Personally I always wanted to upgrade to one of these but the money just didnt seem worth the small if any gain I would have seen.

Kevin91Z

iTrader: (1)

Please dont hack up your TPI car and put an antique carb on it. TPI engines can be made to perform with a little more thought process than just throwing parts at it.

A bigger throttle body is one upgrade you can do that works great when you have also upgraded the rest of the intake and exhaust. For a stock engine, they're not worth it.

Toyota h8r

i have been to carb to tpi and about ready to go back....

i drove a the car my 327 came out of and it flew.....i put tpi on it and swapped into my 91 trans am and its slower than my bolt on LG4 LMAO

cost of fixing gm's screw up, i mean tpi setup.....is a lot.

i mean you have to swap to superram/mini-ram/HSR...yoda yoda yoda

THEN you have to keep screwing with the computer burning new chips and you still have something blah. The best option for top horsepower is either a single plane efi setup that resembles a carb setup.....or just swap in a LS1

Floorman279

yea but does the stock throttle body really restrict the motor as much as the ad says or are they just trying to sell it? Does anybody know what the stock throttle body size is? and i guess the bigger the opening the worse gas mileage you're goona get. 58 mm is worse then the 52 mm correct?

Floorman279

also, i clicked on the suggested items tab and up came the high volume electric fuel pump and regulator. If i would upgrade my throttle body should i upgrade those?

91interceptorZ

iTrader: (3)

on a stock intake and heads....throttle body will really only reduce throttle response....52mm is max for some modified cars...48mm is stock...higher powered motors can use 58mm TB.....I use a HSR intake, which in the last engine masters magazine..they took the same motor...put a carb on it and did a dyno run...then put a HSR on it...same temps of oil coolant and air....got 36hp more using fuel injection over carb...

Floorman279

well i only plan on upgrading the cam and going to alluminum heads roller rockers and headers. nothing else internally. which is best the stock 48 or the 52 and will i notice difference over the stock

Floorman279

what kind of intake did you say 91interceptorZ?

91interceptorZ

iTrader: (3)

I have a holley stealth ram.....they look like a dual carb tunnel ram with a plenum on top...very impressed with it...a little spendy, but worth it in my opinion...Mine also has been ported even more..but noticed power without porting work when I first got it.....I would say 52mm on yours is perfect.

Floorman279

well the whole saying bigger is better. the 58 is better than the 52 and since its 10 dollars more i was thinking of the 58. would the 58 be too much for a motor that i described

Floorman279

in the end how much money did you spend on that stealth intake? was it easy to install? any customizing?

91interceptorZ

iTrader: (3)

I think the 58mm is too big....get the 52mm for sure...plus the 52mm will give you better throttle response...bigger is for sure no always better, sometimes too big will kill your power....as far as holley stealth ram (HSR)...I think I got mine for five or six hundred total (you have to buy holley fuel rails seperate).....I have about 5 hours of porting and port matching on mine but you don't have to do that.....search on thirdgen.org for HSR or holley stealth ram and you'll find a ton of good stuff about it...some bad....I read an article in car craft once that the HSR was one of the best fuel injected intakes out there for a decent price....it produced the most usuable power.....

Floorman279

well what customizing did you have to do. i saw complete kits on theinternet including injectors fuel rails all that stuff and it was pushing $1700. not really worth it in my oppinion

91interceptorZ

iTrader: (3)

do you already have a Tuned port?? if so you only need the intake and fuel rails.....the only thing you have to do extra is hook the fuel lines up...shave a little bit off the throttle body linkage to get it to clear fuel rail (easy)....and intall adjustable fuel pressure regulation that might come with the fuel rails....it's not too bad all around....oh you'll have to get some adapters (local parts store) to hook up your vaccum lines and coolant lines...

91interceptorZ

iTrader: (3)

Make sure you're not looking at the full kit with the computer....with the commander 950 sytem...you don't need that if you have a tuned port....the part number is actually listed under weiand....which is owned ny holley (intake says holley on it)....it's WND-7540...like 300 bucks on summitracing.com and then of course add fuel rails and regulator....

Floorman279

the stock injectors will be fine? and are you talking about all the fuel lines (from the tank to the injectors?)

91interceptorZ

iTrader: (3)

how much horsepower are you going to run again??? you can use a fuel injector calculator to estimate. The fuel RAILS.....sits next to the intake....the part that connects to the injectors themselves...you have to buy that with the intake....you also have to run rubber or hard line from factory hard line in engine compartement on drivers side to your new fuel rails....fuel rail part number from summit is hly-534-185 with non adjustable regulator or hly-534-186 with adjustable pressure regulator...

Floorman279

the stock injectors will be fine? and are you talking about all the fuel lines (from the tank to the injectors?)

Floorman279

as of right now a rough estimate for me. probly have vortec heads new exhaust stuff, about a .500 cam lift and roller rockers. question, i was thinking about possibly doing this. since the standard 275 hp gm perf short block is about 1200 or so, could i have brand new stock bottum end parts (besides cam). But put about a .500 cam in there, vortec iron heads, roller rockers, headers and exhaust, and efi (as of right now still undecided) and have that be fine? plan on also getting a slightly better than stock distributor also.

Floorman279

hey interceptor i was thinking about getting flowtech headers out of jegs and saw you have them. What do you think?

Kevin91Z

iTrader: (1)

Flowtech headers are cheap junk, in my opinion.

Stick with the tried and true Hooker 2055 1 5/8" or board member Dyno Don's 1 3/4".