Hooker 2457HKR Header fitment on bigblock - Impala Tech
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post #1 of 4 (permalink) Old 02-04-2020, 10:12 AM Thread Starter
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Location: Jackson, MO
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Hooker 2457HKR Header fitment on bigblock

I Have a 66 Impala SS that I am swapping in a 454 bigblock into. I heard that the Hooker 2457HKR steel painted headers fit this car and engine....

Well they fit the passenger side just fine as noted in other posts. But if you have power steering they need some(a lot) of BFH massaging.

But for $219 shipped...and some extra power, what can you ask for? And I didn't have stock manifolds.

passenger side: fits great!


What space you have to work with on driver side Left:


little hammer work:


final fitment after paint:


may still need a little work (red circle) not rubbing but 1/8" space.

Ted
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post #2 of 4 (permalink) Old 02-04-2020, 11:15 AM
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The motor will move under power rotating to the passenger side and rising in the vibration isolator (what folks call a motor mount) on the drivers side. So that eighth inch of clearance may disappear rapidly wearing a hole in your pipe.

Surprised that it doesn't fit, but I can not find my catalog that has all of the footnotes on fitment, such as will not fit with power steering, or you have to modify brackets to fit air conditioner compressor. With off the rack headers the big print giveth, and the small print (foot notes) taketh away.

Big Dave
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post #3 of 4 (permalink) Old 02-04-2020, 11:39 AM Thread Starter
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Yeah, I'll need to give it some more clearance in there before I mount it permanently.

Ted

Last edited by brickwhite; 02-04-2020 at 05:03 PM.
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post #4 of 4 (permalink) Old 02-08-2020, 05:51 PM Thread Starter
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I figured out my problem, I had the wrong motor mount installed on the right side. Tall skinny instead of short and wide.

I installed some Prothane Motor Mounts 7-504 short and wide motor mounts and that provided about a 3/8" between the smashed area in the header and the power steering.


all they had was red in stock, oh well but they fit very well.





It's better but I would have still had to do some hammering.

Ted
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