Dead topic (i know already!!) ???'s

[stang09er]

I am about to purchase the Accufab Plenum , but have a question about the throttle body. i curently have the BBK 70mm TB. Should i stay with it or bump it up to an accufab 75mm TB. Any input is greatly appreciated.

 

[hognutz]

stay with the 70mm. the accufab actually loses airflow with the 75mm. flows 628cfm with 70mm and like 618cfm with 75mm.

 

[stang09er]

stay with the 70mm. the accufab actually loses airflow with the 75mm. flows 628cfm with 70mm and like 618cfm with 75mm.

Thanks a lot bro. I can spend less $$$ now!!!!
Will the screws mate well to my existing throttlebody??

BTW Hognutz...your stang is BADA$$!!!

 

[stang09er]

nevermind.....i just saw your sig and you have the same TB as i do!!

 

[clarkjr]

Actually, Accufab has just redesigned their plemums and they have a full 75mm opening, previously a 70. Thus, it should flow better with a 75mm tb. I think the new flow numbers are on their site.

 

[stang09er]

Just preparing you all for a long post....here it goes!!

 

[03Sleeper]

Naw you will be Fine you only should go with a 75mm if you use a S/C so 70mm to a accufab Plenum will be fine..

 

[stang09er]

FORD 1996 - 2004 4.6L 2V
STOCK 65MM
TESTED @ 5" - 248 CFM
CORR @ 20" - 496 CFM
CORR @ 25" - 556 CFM
CORR @ 28" - 588 CFM
ACCUFAB 70MM
TESTED @ 5" - 299 CFM
CORR @ 20" - 598 CFM
CORR @ 25" - 670 CFM
CORR @ 28" - 708 CFM
ACCUFAB 75MM - test results not available

1996-2004 4.6L 2V PLENUM FLOW RESULTS
5" 20" 25" 28"
STOCK PLENUM 1998 - 2001 ONLY 210 420 470 498
w 65mm Stock Mustang T/body 186 372 417 441
w 70mm Accufab T/body 207 414 464 491
w 75mm Accufab T/body 206 412 461 488

STOCK PLENUM 2001 & UP ONLY 213 426 477 505
w 65mm Stock Mustang T/body 194 388 435 460
w 70mm Accufab T/body 206 412 461 488
w 75mm Accufab T/body 207 414 464 491

Trick Flow Plenum Only 260 520 582 616
w 65mm Stock Mustang T/body 218 436 488 517
w 70mm Accufab T/body 251 502 562 595
w 75mm Accufab T/body 250 500 560 593

C&L Plenum Only 240 480 538 569
w 65mm Stock Mustang T/body 204 408 457 483
w 70mm Accufab T/body 235 470 526 557
w 75mm Accufab T/body 252 504 564 597

Dragon Plenum Only 280 560 627 664
w 65mm Stock Mustang T/body 226 452 506 536
w 70mm Accufab T/body 258 516 578 611
w 75mm Accufab T/body 261 522 585 619

ACCUFAB PLENUM ONLY 287 574 643 680
w 65mm Stock Mustang T/body 235 470 526 557
w 70mm Accufab T/body 265 530 594 628
w 75mm Accufab T/body 265 530 594 628

 

[stang09er]

Naw you will be Fine you only should go with a 75mm if you use a S/C so 70mm to a accufab Plenum will be fine..

Yeahh...thats what I'll do. My engine has over 73,000 miles on it and i don't think it can take the amount of air induction that a S/C will produce.

 

[clarkjr]

Personally, I too would stick with the 70 since you already have one. I was just informing you about the new plenums that are now 75mm.

Accufab told us a few days ago the flow numbers were, or were going to be soon, posted on their site - I've not checked - sorry!

 

[stang09er]

Thanks.

 

[hognutz]

Thanks a lot bro. I can spend less $$$ now!!!!
Will the screws mate well to my existing throttlebody??

BTW Hognutz...your stang is BADA$$!!!

thanks man. it will look alot better when I get it lowered next week.

it has yet to be seen on a stock car whether the 75mm accufab outperforms the 70mm. the preliminary flow numbers I have seen on it are identical. the data will be coming but I am having a hard time buying that much of a difference.

Accufab 70MM plenum only........619
with 70MM TB.............................628
with 75MM TB.............................614

Accufab 75MM plenum only.........680
with 70MM TB.............................628
with 75MM TB.............................628

 

[hognutz]

that being said flow is no the end all when it comes to power but you are not talking 5hp here you are talking 1-2.