Originally Posted by topside
340 application. Any appreciable difference between the two, besides where they're made ?
Obviously Speedmaster's cheaper, and apparently a knock-off of the Edelbrock.
Curious about casting finish, power, and fit.
Allegedly, either will fit under a stock '67-'76 A body hood, likely needing a drop-base air cleaner.



Here’s some testing I did years ago.

https://board.moparts.org/ubbthread...7021/ld-340-flow-bench-test-results.html


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

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