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Mike S.
Mike S., Chevy Mechanic
Category: Chevy
Satisfied Customers: 6777
Experience:  ASE Certified Master Technician
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whats the difference in a 454 an a 454 tonawanda engine

Customer Question

whats the difference in a 454 an a 454 tonawanda engine what is the horsepower an torque of each engine
Submitted: 6 years ago.
Category: Chevy
Expert:  Mike S. replied 6 years ago.
You know tonawanda is a GM Manufacturing Plant. I can tell you the horsepower and torque if you either let me know what year, make and model they both came out of, which is the fastest way to do it, or be trying to decode the numbers on either the passenger front block machined boss or at the rear around the top of the bellhousing spot. It would be nice to know what type of fuel induction as well.
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Customer: replied 6 years ago.

the 91 454 tonawanda number is XXXXX an the other is a 89 but i dont know the number on it. so there aint no difference between them other then the companys. there just factory fuel injected

Expert:  Mike S. replied 6 years ago.
Do you know what they may have come out of? I'll give you the specs as soon as I find the right ones.
Customer: replied 6 years ago.
they both come out of 1 ton duallys gmc
Expert:  Mike S. replied 6 years ago.

I got this from Chilton's 1991 Chevrolet K3500.

graphic

Mike S. and other Chevy Specialists are ready to help you
Customer: replied 6 years ago.
that still dont really help me out
Expert:  Mike S. replied 6 years ago.
Ok, does it answer your question about horsepower and torque at least? What else you want to find out?
Customer: replied 6 years ago.
r they the same motor
Expert:  Mike S. replied 6 years ago.

Oops, I uploaded the wrong diagram.

Click here.

 

Customer: replied 6 years ago.
so the tonawanda is just a manufacturing plant then
Expert:  Mike S. replied 6 years ago.
As far as I know.
Customer: replied 6 years ago.
ok thanks
Expert:  Mike S. replied 6 years ago.
You know you accepted twice. Did you mean to do that or was that a mistake? Let me know and I'll ask them to refund 1 of your accepts.