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Re: Performance Lacking in a 383 Build.
Quote:
Originally Posted by '68OrangeSunshine
Is this in a Blazer [K/5] type truck? Even though GMC called them K/1500, not ''K/750''.
Or are you using Jimmy as a nickname for a GMC pickup?
4.56:1 is unusually low for a rearend on a light 1st gen suv. Most are 3.73:1 or even 3.07:1 in a half ton.
If you're talking about a 3/4 ton GMC, never mind. But 4.56:1 on a half ton Blazer is real low. And you'd do better with higher gears, like 3.73.
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It all depends on the final tire size & how the vehicle is used. 4.56's might be too low for you, but just right for another enthusiasts combo.
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Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....
Cubic inches is like Indiana Jones with a cheap pistol.
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