To placed it simply, no. This is a misunderstanding a the majority of peoplehave, and also because of so countless bogus magazine ads the end there, you view the statement, "big block power in a small block package", and the truth is, you definitely won't acquire THAT much an ext power the end of 33 extra cubic inches.
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Actually, we should compare apples come apples here. A 383 is a .030" over-bore, and when to compare this to a "350" cubic inch engine, us shouldcompare it v a .030" end bore 350 as well, to keep a level play field due to the fact that if you to be going come rebuild your existing 350, it will certainly probably end up being bored .030" over, and a .030" boring 350 is in reality 355 cubic inches. So a 383 is actually only 28 cubic inches bigger than a usual / comparablerebuilt 350 i m sorry is in truth 355 cubic inches. So are28 cubic inches going come suddenly offer you "big block power"? Hardly.
Let's usage the standard, 1 HP every cubic inch preeminence of thumbjust for the ease of mathematics here. For this reason a .030" end 350 is actually a 355 cubic incher, and at 1HP per cubic inch for a soft build, us would acquire 355 HP. Thesame goes for a common 383 using the same rule of thumb, therefore we room comparing 383 HP come 355 HP, i beg your pardon is 28 HP difference. Absolutely not sufficient of a gainto give you "big block power". And also when you're talking huge blocks, you are talking "torque" quite than HP, and also it's "torque" the you feeling in the seat of your pants once driving around.
So, if a usual 454 big block, (also in ~ .030" over) provides 461 cubic inches, and also at 1 HP per cubic inch, we are talking around 461 HP which is a heck of a lot an ext than the 28 extra HP a 383 would frequently make in the same comparison. Yet keep in mind, us are just using the old 1 HP every cubic inch dominion of ignorance here. Of course it would be much more like 1.2 HP (or so) per cubic customs in truth for most "performance" rebuilds, and also on much more radical enginesupwards of 1.3 -1.4 HP every cubic customs in really nasty street / strip engines.
So why pick a 383 in the an initial place? due to the fact that the extra cubes room all by stroke, not by bore. Although a 383 could be do the same 1 HP every cubic inch dominion as the 355, it will naturally make much more torque every cubic customs simply due to the fact that of the physics of enhanced cubic inch via stroke fairly thanbore size.
Stroke means "leverage" and also leverage gets vehicles moving, especially at reduced RPM's. So even though you might not gain true "big block power" the end of a 383, you will certainly feel the added strokein the chair of her pants compared to one identically prepped 355 since the 383 will make much more torque.
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Now, if you really want large block power in a tiny block package, a 427,434 or even a monster 454 small block stroker will do the trick, yet as with any type of serious stroker of this caliber, you are also talking about a hefty price tag to construct one compared to simply doing a mild rebuild on a typical large block, or because that opting to turn your present 350 into a 383 stroker.