Brian Felts

Where is the best place to purchase a 52 mm throttlebody. What is the best one to get for the money



Brian Felts

gen3z

i like the holley,they spent a long time working to get this piece perfect and that they did!!!!!!!!!!!!!300.00 new not reworked like most 52mm tb's........

Brian Felts

Tell me where did you find this piece for $300.00


Thanks
Brian Felts

gen3z

i purshased mine from jegs about a year and a half ago,then i bought the 58 mm for 359.00 about 6 months later...

bigals87z28

either BBK or it was Edel that have the TB's for 299.99. The Holleys do look the best IMO.

Brian Felts

I Was kinda going to the BBK since it seems to be the cheaper one. Any input on that. The car has full exhaust from front to back and NO Cats. I am going with SLP runners ZZ4 cam and ZZ4 heads on my 305. I am trying to push the limits on my daily driver.....



Thanks for all the help
Brian Felts

gen3z

hey its your money which ever you choose i am sure youll be happy,especially if money is tight, join the fan club...

bigals87z28

Ok this is gunna start a war that will take this to about... 3 pages witha lock, but there is no need for a 52mm TB for your 305. You really dont need it. Im telling you this so you can save money and put it somewhere else. And BBK makes mustang parts so blah BBK.

Brian Felts

Yes I have read that many times. Do you guys really think its true. I will say I am more of a carb guy so I really trust your opinions. Do you have any other ideas if I keep my TB?

Brian Felts

bigals87z28

Ok your a carb guy. Let me ask you this. Would you put on a 1050cfm carb on your 305 and would you see any power major power increase over lets say, a carb around maybe 750?

Brian Felts

Yeah makes sense, any other mods you suggest to help out the TPI. I have AFPR, air foil,coolant bypass full exhaust and removal of all smog.



Brian

bigals87z28

lower intake base would be a good buy. If there is anything restrictive right now on your engine, it would probably be that.

biggtime

If its cheaper there is a reason.

BBK=junk

Brian Felts

Well I could ride with the base being a restriction,what would be a good base and where would I find it?


Brian

biggtime

I used to use a edelbrock. Accel also makes one. If you have vortech heads go to skoggins and dicky

D Stroy H8

The 52mm TB is not a good idea for the money... You were right in purchasing the airfoil because that helps the stock TB. For less money, you can invest in a dremel kit and really work the upper plenum. Open up the tb bore, grind down the EGR plate (right behind tb bore), and open up the runner outlets (gasket match them to the actual runners. When all is said and done, you have freed up quite a few CFM. You also now own a dremel tool/kit

If you aren't keen on the idea of porting yourself, you can buy a ported out upper plenum from TPiS for about 100.00 bucks.

This mod is much more sensical than a larger TB. Hundreds cheaper, and more powerful.

jamesbob02

Where does it say he has a 305? I thought he had a 355 TPI by his sig.

Brian Felts

Sweet thanks again for the input, let me tell you a little more of what I have done already. I know its only a 305 however I have a radical 350 in another 3rd gen.

I have already taken down the TB Egr plates and added the air foil. I have removed the baffels in the air boxes added a AFPR and did the coolant bypass. I was just wanting to be able to give it all the air the new cam and heads can take. I will say again I am pushing the limits but that is the fun RIGHT? I am going to get the SLP runners and port match the entire upper intake. DO you think the ALUM. Driveshaft would be a better idea?


THanks again
Brian Felts

Brian Felts

jamesbob02 my 355 is a deamon carbed Vortec headed LT4 Hot cam 89 RS. Let me tell you for a fairly cheap 350 it will run. I use the 305 TPI convertible for my daily driver. Check out my pages and let me know what you think.....THANKS TO ALL!!!!!!!!!!


Brian

NEEDAZ

Some input on the edl./BBK TB. I just put one on and ran into some things you will want to look out for. I got the 52mm TB used because my stocker had bad bushings and the blades where hanging open, NOT fun. The BBK needed some work before it was right. First thing I ran into was the threaded holes for the coolant/IAC plate where not as deep as in the stock TB. I had to trim about 3mm off of the screws for the plate to seat right and clamp down on the gasket. I almost missed this because they where so close to right but just not quite. The next thing was the holes in the top plate where off a little bit. So when the top plate was on it over hung the back of the TB. Not much but a little more then the thickens of the TB gasket making for a potential vacuum leak. I haven’t heard ANY of this before so I may have got a bum one, but thought I’d give you the heads up on what I ran into.

TRAXION

Yea ... it's so junky that I ran 11.6's @ 117mph with it. Pushing close to 400 to the rear wheels naturally aspirated on a stock L98 shortblock. Yea - junk. roflmfao.

Tim

biggtime

There is more to it than 1/4 mile times, there are a lot of quality issues with these. Read some of the other posts. I have put a couple of these on for people andf now refuse to. I do not feel the need to 'fix' a new part to make it work.
Holley's is billet, BBK is cast. Holleys fit and finish is outstanding
I buy a part to last and I do not see the bbk one lasting. I own a bbk one for a LS-1 and I would still sell it if I could buy a Holley one. I guess I just like quality parts.

bigals87z28

yeah, well your whole car is junk and you made up thoes times and have no film to back that up with. Your just a big liar!!





























kidding kidding. Trax's car is teh shiz. Trax knows a lot about this fan'dangled horseless carage stuff. But I will agree that the Holley stuff is pretty nice. I have no experiance with either of them other then seeing them.

1bad91Z

iTrader: (1)

IMO, the holley is a WAY nicer TB ! But, they both get the job done.

Here's a pic of my Holley 58mm:

TRAXION

And there ya have it. That is exactly what I was going for.

Tim

Matt87GTA

I have a BBK 52mm. When I depress the throttle, it allows various amounts of air into my engine. I like it. :lala: :lala:

NEEDAZ

TRAXION and Matt87GTA, did you two run into the same problems or was mine just a freak.

TRAXION

AFAIK, my TB came with new bolts for the IAC cover and they fit AOK. I kept the included top cover and it was delivered already attached. Mine didn't really have any 'problems' and was in a usable state as delivered. However, I did spend time with some sandpaper on the airfoil since I wanted it to be smoother.

FWIW, I am not saying that the Holley isn't better than the BBK. I think that it is. It's a nice billet piece, polished, etc. I am just saying that calling the BBK 'junk' isn't exactly the truth. If you want to spend the extra money on the Holley then by all means ... do it. It is a better piece. However, if you want to save some money then the BBK is a good choice. I actually wish I would have not bought a 58 and just jumped right up to the monoblade throttle body.

Tim

1bad91Z

iTrader: (1)

Yea, but the mono-blade cost and arm and a leg!! I dont think it would make a difference on your motor over the 58mm, but it still might help.

It's kinda funny how TPIS says "You'll have to convince us to sell you this one", when in reference to the mono-blade!

IROCZZ3

No- you dont need that big a throttle body because the Ramjet 502 uses a 48mm throttle body and you have just a 350! It'll be too big and you'll lose all low end torque!

TRAXION

If I had a penny for how many times I have heard that rediculous argument then I would be a rich man I know you were joking - thanx for making me laugh

I wish I would have bought the monoblade because I'm sick of wasting money. I bought a 52. Then I sold it and bought a 58. I should have just bought the monoblade right off the bat. I'm pulling some vacuum at WOT ... I tested without the airbox and I still have the vacuum. You make the call. I figure it can't hurt because I'll eventually use it on the big cube smallblock anyhow.

Tim

1bad91Z

iTrader: (1)

Traxion - are you not at 100 kPa at WOT ?

Matt87GTA

Nope, none of the problems you speak of.... Like Trax, my upper plate was installed when I got it but I have had it on and off a few times without issue. No problem at all with the IAC housing bolts...

There is no doubt that the BBK is not the nicest looking or smoothest finished of the TBs on the market. As mentioned above, it is cast and others like the TPIS and Holley ones are CNC'd. But it is also cheaper. That is the bottom line really. I'm not a fan of cutting corners, but lets be honest here... Want the best - be prepared to pay for it. Want something that will do 95+% of what the "Top of the line" TB of the same size will do? There ya are... . Plus, like Trax mentioned, you can always give it a little extra work to help out flow if necessary.

Also, I had a Holley 58mm for a while but I hated the way it changed the pedal feel. Holley changes the correlation of pedal depression to blade movement and for the life of me I cannot figure out why. Seems to me that GM did a fine job of that....

TRAXION

I end up pulling some vacuum in the upper RPMs. It starts off at 100kPa but declines to about 96kPa at WOT. I'm getting vacuum from somewhere and I tested with NO airbox and I get the same thing.

Tim

305sbc

iTrader: (3)

Are you testing with a vacuum guage or just the MAP?
Also where is it tapped into the system.. plenum? throttle body? or base?

TRAXION

Testing with the MAP via scanner. Tapped into the plenum (before the intake runners but after the throttle body).

Tim

305sbc

iTrader: (3)

Well that certainly suggests that your TB is a restriction on your engine.

If it's not too much trouble:
When you are WOT at the top of your gears see what a vacuum guage reads and note if you see the needle jumping or pulsating when you're getting this vacuum.

1bad91Z

iTrader: (1)

Thats pretty wierd man! Could it have something to do with your vaccum pump?

TRAXION

No. The vacuum pump is connected directly to the power brake booster.

Tim

3.8TransAM

Trax, got a question for you, did u take topend vacuum readings with all the styles of TB? Using the stock , the 52 and the 58 and then the monoblade? If u did what did u find?

Curious to see your results......................mine has 95k on it in the Formie(stock) and sooner or later it will end up getting the axe when it dies...

thanks and later
Jeremy

Z dude

good info guys! I kinda changed my mind on buying one now too(52mmTB)..
I have tons of upgrades and am also looking for more that will actually make a difference I have headers,3"all the way back,SLP runners,cam,1.6 rollor rockers,airfoil,ram-airkit,etc..

what about underdrive pulleys?? waist of $$ or no??

anything else?

bigals87z28

for the price, i would not go with underdrive pullies. I would put the money twards a cam or go have your heads ported or something, that will net you real power instead of just wasting your time with the pullies.

biggtime

I have a set on my Typhoon, It doesn't charge untill about 1,000 rpm. So when you are sitting with the air or heat on its ready to die. Spend your money somewhere else.

ray royer

i am also doing the cam and heads on my 305. so no to the bigger throttle body and keep the stock one with the airfoil. do you guys do anything to the stock throttle body besides the airfoil. or leave it completely stock. on the intake i am going to port the plenum. taking out the egr piece, does that affect the computer at all. and should i port the lower intake or buy a aftermarket one? and what should i do about runners. port stock ones or aftermarket? thanks for any help

JakeJr

I installed a BBK 52mm TB a few weeks ago; took off a 58mm BBK.

With the 58, throttle response was brutal and very hard to modulate. I found my self blasting away from stop lights/signs like Speed Racer and that's not what I was after.

The 52 is much more drivable and, with the exception of needing several adjustments to the minimum air flow setting and getting the bellows to fit, I didn't have a single problem.

With the Min Air Flow issue, if I tried achieving the 20/30 IAC count setting that I had when the stock 48 was on, the engine wouldn't idle down when I lifted from, say, freeway speed. Car just kept on going.

Made several different adjustments and finally had to settle on IAC counts in the low 50s (idle in gear) to eliminate the problem.

As far as the bellows, I tried the boiling water trick; the WD-40 trick and neither would work. Couldn't get that sucka on no matter how hard I tried.

I finally ended up using my high speed grinder and grinding down the OD of the TB bellows mounting to get it to slip on.

Just my experience.

Jake

doc

Brian,

How are you doing?

If you want to get the BBK 52mm TB, Summit Racing has them for $299.95