making most of my set up

[SAYNOTORICE]

i know the best way to compliment a new intake is a bigger tb and new mass air...with my setup should i run a 65mm tb and 70mm mass air or shouold i go larger???....how about 24#ers??? the engine wiil be untouched for awhile because i need to upgrade the worn suspension, and the body needs some work and paint as well....when this is done ill either rebuild the engine or opt for a fresh 306 keeping the intake and adding trick flow heads and cam in both situations

 

[Grn92LX]

75mm TB and get a maf for 24lb injectors now so when you upgrade heads/cam in the near future your already set. Or hold off on the maf/inj/tb until you do the heads/cam. I'd do the 75mm TB now so thats out of the way when you upgrade.

 

[SAYNOTORICE]

wouldnt i lose some power goin with one that large however?

 

[MustangMulch]

I would definitely wait on the TB. A 75mm will kill your low end. There's no point in doing it until you are going to do heads/cam.

 

[D347643]

a 70mm tb would be good if you have tw heads and a stage 1 cam. thats what im runnin.

 

[Smeckel]

Yeah, stick to a 65mm or 70mm untill you're running big numbers. Just going to hurt ya otherwise. 24#ers will be fine on your stock engine, though you might want to buy a regulator also.

 

[04sleeper]

A larger throttle body right now will not help you much, but if you want to get it just to have for later it should be ok. A larger mass air flow sensor will help you gain power now and later. I woulld recommend a Pro-M 80 MM plastic meter for 19 lb. injectors. It should be good for up to around 340 or so RWHP in N/A form. Unless you plan on doing more later then I would wait until later before spending your money. 24 lb. injectors will not give you any more power now.

 

[Grn92LX]

*sigh* A 75mm TB WILL NOT kill your low end!!!! Thats internet racer theory!!!!!!! Match your TB to the inlet of your manifold. While you dont NEED a 75mm now, it WILL be better for the plans you have down the road.

19lb injectors will not safely support 340rwhp. If your planning on making that much power, use a 30. But what do i know

Reading you guys responses makes me realize why I dont post real tech questions on stangnet anymore. I go to hardcore50 for real answers, not what an internet racer thinks will happen

 

[MustangMulch]

*sigh* A 75mm TB WILL NOT kill your low end!!!! Thats internet racer theory!!!!!!! Match your TB to the inlet of your manifold. While you dont NEED a 75mm now, it WILL be better for the plans you have down the road.

19lb injectors will not safely support 340rwhp. If your planning on making that much power, use a 30. But what do i know

Reading you guys responses makes me realize why I dont post real tech questions on stangnet anymore. I go to hardcore50 for real answers, not what an internet racer thinks will happen

You're real cool man!

 

[remat457]

i know the best way to compliment a new intake is a bigger tb and new mass air...with my setup should i run a 65mm tb and 70mm mass air or shouold i go larger???....how about 24#ers??? the engine wiil be untouched for awhile because i need to upgrade the worn suspension, and the body needs some work and paint as well....when this is done ill either rebuild the engine or opt for a fresh 306 keeping the intake and adding trick flow heads and cam in both situations

hmm...this thread seems like deja vu.
which tfs heads? it really depends on what you want to do and how far you want to take it.

in general if you are going for a street car i would say you are good with a 70mm TB....

 

[Grn92LX]

You're real cool man!

Thanks. I've done too much research and have a good amt of experience. I KNOW what works. I guess its a gift I have

It doesnt matter if guys dont wanna take my advice or not, im just here to help. Just trying to clear up internet myths that inexperienced people start.

 

[Mhypertext]

*sigh* A 75mm TB WILL NOT kill your low end!!!! Thats internet racer theory!!!!!!! Match your TB to the inlet of your manifold. While you dont NEED a 75mm now, it WILL be better for the plans you have down the road.

19lb injectors will not safely support 340rwhp. If your planning on making that much power, use a 30. But what do i know

*sigh*

my friend runs 19lb injectors on his car he has the BIG trick flow cam Edelbrock heads and Victor intake runs 11.20s all day long

what was u saying about support

 

[Smeckel]

*sigh* A 75mm TB WILL NOT kill your low end!!!! Thats internet racer theory!!!!!!! Match your TB to the inlet of your manifold. While you dont NEED a 75mm now, it WILL be better for the plans you have down the road.

19lb injectors will not safely support 340rwhp. If your planning on making that much power, use a 30. But what do i know

Reading you guys responses makes me realize why I dont post real tech questions on stangnet anymore. I go to hardcore50 for real answers, not what an internet racer thinks will happen

All I know is that when I put a 70mm TB on my basically stock engine, it felt like there was alot less power off the line compared to the stocker. I ended up throwing on the 65 and itdid feel stronger. However, I can't give any dyno numbers comparing them but by the ol' SOTP meter, I know I wouldnt bother going much larger without engine mods.

On a side note, if someone offered to trade a 70 for my 65 now, id prolly be willing.

Just my .02

 

[04sleeper]

19lb injectors will not safely support 340rwhp. If your planning on making that much power, use a 30. But what do i know

Reading you guys responses makes me realize why I dont post real tech questions on stangnet anymore. I go to hardcore50 for real answers, not what an internet racer thinks will happen

19's will work. I don't know where you get your sources from. I know several hardcore racers including Bart Tobener (EFI Renegade Champion), Jeremey Martorella (Trophy Stock Champion), Willie Figeroa (Wild Street Champion) just to name a few. I know otherwise.

 

[Grn92LX]

*
what was u saying about support

Did you read? I said SAFELY. Hmm, I wonder what the duty cycle is on that car LOL!

89sleeper- will 19's work, sure. Is it optimal? Hell no!

Too each their own

 

[mustangsquared]

There is a math formula for HP made that determines the "safe" injector size needed to support the HP output at 80% duty cycle... MAX Power = Flow rating /BSFC x # of cylinders. MMFF Sep 04 has this:

19 = 304 HP
24 = 384 HP
30 = 480 HP
36 = 576 HP

The HP is MAX Power (at .5 BSFC) with most injectors rated at 43 PSI.

 

[remat457]

Thanks. I've done too much research and have a good amt of experience. I KNOW what works. I guess its a gift I have

It doesnt matter if guys dont wanna take my advice or not, im just here to help. Just trying to clear up internet myths that inexperienced people start.

If I have learned anything it is that there is more than one answer -- it is all in the application and what you want to do in the end.

I am getting really tired of people calling others "internet racers" when they don't agree.

Check out 5.0 Dyno Tests and see some real dyno results with different TB's. Call up Edelbrock or TFS and see what they recommend. In the end, everyone has their own experience, setup, preferences and especially goals.

So, with that said I STILL would recommend a 70MM TB and stock injectors for light duty usage. If you find yourself at WOT (or the track) a lot do 24#s. Get a slightly larger MAF (than TB). This is for the setup listed (TFS heads, cam etc).

And I know it WILL work.

 

[Grn92LX]

On a h/c/i car, the bigger TB is the best bet. BUy whatever size TB matches your inlet on the manifold. If you have an edelbrock intake, buy a 70mm, TFS buy 75mm. It just helps in creating a nice clean path for the air into the manifold.

For the record, I have that dyno test book. They use a gt40 intake for one of their TB test, it says NOTHING in the article about porting the inlet to 75mm for the test, so testing the 75mm TB on that combo IS a wash. I dont need to call a manufacturer to find out what I need, im just gonna get one of the behind the phone monkeys on the phone. I'll take what smart people have to say and guys like ed curtis, jay allen. YOu know, engine combo designers/cam designers

Mike

 

[remat457]

On a h/c/i car, the bigger TB is the best bet. BUy whatever size TB matches your inlet on the manifold. If you have an edelbrock intake, buy a 70mm, TFS buy 75mm. It just helps in creating a nice clean path for the air into the manifold.

For the record, I have that dyno test book. They use a gt40 intake for one of their TB test, it says NOTHING in the article about porting the inlet to 75mm for the test, so testing the 75mm TB on that combo IS a wash. I dont need to call a manufacturer to find out what I need, im just gonna get one of the behind the phone monkeys on the phone. I'll take what smart people have to say and guys like ed curtis, jay allen. YOu know, engine combo designers/cam designers

Mike

My point was that there are many different answers to his question. The part about checking out Dyno Tests and calling head manufacturers was more directed to the person asking the question to get further info/opinions. The setup will never match but it is informational! Because as we all know these threads NEVER result in a consensus.


p.s. to SAYNOTORICE regardless of what size injectors you get I would definitely recommend an AFPR and higher cap fuel pump (I would say 155lph but opinions vary).