LT1 396 using a 6 inch rod and direct port nitrous?
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Joined: Oct 2002
Posts: 2,931
From: Upstate NY
Re: LT1 396 using a 6 inch rod and direct port nitrous?
Originally Posted by rskrause
Yep, the math is right. GM picked a 3.80" crank for the crate stroker because it allowed them to use existing pistons.
Rich
Rich
As long as the crank was special, the 3.80 gives a 382 (close enough!) vs. 377 from a 3.75.
I believe the crate 383 has standard 5.7 rods.
My $.02
Registered User
Joined: Nov 2001
Posts: 2,985
From: In a house by the bay
Re: LT1 396 using a 6 inch rod and direct port nitrous?
Originally Posted by Injuneer
The shop that built my engine tends to be extremely conservative, favoring reliability over squeezing the last ounce of HP out of an engine. Knowing I was going to spray a 300-shot, they recommended a 5.85" rod, even on a 3.75" stroke. They also followed that approach with George Baxter's LT1 engine, which ultimately survived and proved extremely reliable at the 1,100+HP level, running 20# of boost. His 383 engine actually started out life with 5.7" rods, but they were replaced with the 5.85" Oliver Billets, when the previous Oliver forged rods started to shown signs of stress.
-Mindgame
Registered User
Joined: Sep 1998
Posts: 133
From: Toronto,Canada
Re: LT1 396 using a 6 inch rod and direct port nitrous?
I've personaly run a 400+ shot on a 6" rod 396 setup. It was a 1.06 comp height. It went 9.11@155mph at 3400lbs. I have built both combinations, 5.85 or 6" and they both work, but I would suggest using a 5.85 rod. Email me if you need anything.
Dave
GMPerf
Dave
GMPerf
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