?

 

Yes, I believe so.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

I also thought so for the longest time.. then I noticed places like expressautoparts.com and carparts.com list different part #'s for the MPFI and TPI pumps.

The mounting bracket should be the same, and I'd say you could use a TPI pump in an MPFI motor (such as Edelbrock's high flow in-tank units), but now I'm not so sure about vise-versa.

The MPFI pump supplies 60 PSI "dead head" (max) pressure, and I think that's the same as the TPI- maybe there's some flow difference?


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards

 

ok i work in an auto parts store, and i recently looked into this, the pumps are different, but the sending units are the same.

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87 IROC-z 305 TPI 5spd Borg warner 9-bolt 3.42 posi 4 wheel disc, no mods yet,just got it.

 

I guess the only way to know is to compare part numbers.It would be great to have a chart w/ flow+pressure and part numbers.I know a quad 4 pump is physicaly the same,could be better.

 

ay work(autozone) I have a chart that compares STOCK presures of every pump we make an aftermarket(or OEM equ) for. the MPFI and TPIpumps have different flow/pressure rates. I looked into this when i had my RS to see if I could use the stock pump. ill get the exact numbers tomorrow morning/ and post em

 

Ok, I coulda sworn they at least had the same 50 PSI pressure... I've been wrong before.

 

Mike88, did you get those numbers? If Ski89 and Glenn are right, that my pump's dying, maybe I'll upgrade my MPFI pump to a TPI pump...


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

im on lunch right now(3pm est 11/7/00) i forgot to luck to be honest, when i go back to work, ill get all the figures and post(around 8pm est)
sorry guys
mike

 

okay, the skinny on ac pumps
ep240(AC for V6) 50 psi, 16gph flow
ep241(AC for V8) 50 psi, 24gph flow
so they flow less on the V6 but have the same pressure
hope this helps
mike

 

Awesome! Thanks, Mike!! If this pump ever goes, I won't bother with a high-flow one, I'll just get the TPI unit. Thanks again!


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

Would anyone happen to know the stock flow ratings for the GMC syclone/Typhoon pump?