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Discussion Starter #1
are they worth the money if i get a 75mm and a maf to match it its about 250... am i gonna feel an increase
 

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Sheriff Metal Face
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75mm is too big for a stock 5.0. You'll lose alot of lowend power and it won't "hit" til later on in the powerband.

i have a BBK 70mm and it's still too big. It screams once it gets to ~3k rpms. I noticed more power in the upper rpms and WAY better throttle response. I want a 65mm though.
 

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75mm is too big for a stock 5.0. You'll lose alot of lowend power and it won't "hit" til later on in the powerband.

i have a BBK 70mm and it's still too big. It screams once it gets to ~3k rpms. I noticed more power in the upper rpms and WAY better throttle response. I want a 65mm though.
Wait what???

You miss your power before 3000 rpm? why?.... Are you towing trailers? ....
 

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I've been wondering about the MAF/TB combo. For a stock 5.0, what's the recommended combo. No bigger injectors, or anything else to add more power.
 

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I have not seen any lose in power or torque on anybody's car when putting a 75mm tb on a stock intake. It just isn't worth the money because you gain zero especially to the butt dyno. The stock intake opening is 55mm I believe so no matter what size tb you have yous till have an opening of 55mm then the restrictive lower manifold and heads to deal with.

It'll help when you swap to a better flowing upper/lower intake setup but don't expect it to be a gain in power when you bolt it up to your completely stock motor.

I've been wondering about the MAF/TB combo. For a stock 5.0, what's the recommended combo. No bigger injectors, or anything else to add more power.
I'd say an explorer intake with matching 65mm tb and as large as possible maf meter calibrated to your stock injectors
 

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Discussion Starter #9
ok thanks ryan does trickflow make a good throttle body or no? there kinda cheap....
 

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i got a 65mm(i think) when my stocker was sticking, bought it from summit and have had no problems at all. i didnt have to port match the intake for the 65mm either it was fine.
 

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Sheriff Metal Face
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Just a thought, if you have no power below 3k RPM, you might want to check your timing.
Just a thought.

I did a TB/Plenum on my 4.6 and felt nothing., 5.0 is different though. It responds better to mods.
I have power below 3k. Just not as much as I did with the stock TB. After putting the 70mm on, it feels like it holds back some before 3k then it launches like its spooling lol. But I did notice a loss. I know if I port matched my upper it would be alot better and smoother. 70mm tb with a 55mm opening on the intake is ftl
 

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I have power below 3k. Just not as much as I did with the stock TB. After putting the 70mm on, it feels like it holds back some before 3k then it launches like its spooling lol. But I did notice a loss. I know if I port matched my upper it would be alot better and smoother. 70mm tb with a 55mm opening on the intake is ftl
Most people think they can throw on parts and not tune ....

Add some timing lower in the rpm and all that power will come back.
 

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ok thanks ryan does trickflow make a good throttle body or no? there kinda cheap....
no problem, tfs normally makes good stuff but not sure if someone else makes there tbs and just rebrands it or not. I've actually had good luck with the cheap polished professional products tb's believe it or not. Stay away from bbk/edelbrock tb's. They are junk and whistle like crazy as well

Most people think they can throw on parts and not tune ....

Add some timing lower in the rpm and all that power will come back.
I totally agree
 

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Discussion Starter #15
Ok the professional pro are pretty cheap too ill look into it i still have to put on my heads and intake... so i was just looking for a good combo to keep the air flow i have explorer p heads and intake so you think 75mm would be to much or should i go with 70mm
 

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Sheriff Metal Face
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Most people think they can throw on parts and not tune ....

Add some timing lower in the rpm and all that power will come back.
Kinda weird because I know people who have run a 70mm on a stock intake but port matched the intake and it smoothed out the acceleration after. And it was doing the same thing as mine before the porting.
 

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Mine doesn't
mine did.. it's been known for along time now that it's common with bbk/eddy tb's. They eventually suggested drilling a tiny hole in the tb buttefly to help the situation. Do a search for it on corral.net if you want. bbk's quality control blows just look at there ssi intakes for example
 

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Kinda weird because I know people who have run a 70mm on a stock intake but port matched the intake and it smoothed out the acceleration after. And it was doing the same thing as mine before the porting.

Really have no clue what you are saying...
 
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