View Poll Results: what rotating assembly and why? thanks
383 w/ 5.7 rods
8
47.06%
383 w/ 6.0 rods
4
23.53%
396 w/ 5.85 rods
2
11.76%
396 w/ 6.0 rods
3
17.65%
Voters: 17. You may not vote on this poll
what rotating assembly would you go with?
Thread Starter
Registered User
Joined: Mar 2003
Posts: 207
From: Nebraska
what rotating assembly would you go with?
I'm starting a build up for my LT1 and i'm going w/ a ATI procharger w/ 12-15lbs of boost on it. the car sees about 3000-4000 miles a year w/ some ocasional trips 200-300 miles long. what rotating assembly would you go with? thanks
Josh
Josh
Registered User
Joined: Oct 2003
Posts: 1,454
From: MN/WI
Re: what rotating assembly would you go with?
I voted the 383 with 5.7 rods. With that much boost, you will need pistons in the area of a -30cc dish to get the compression down to a point where street gas is an option. The shorter rod won't be anything that you will notice, and it will give the best compression height of all the setups that you listed.
Moderator
Joined: Dec 1969
Posts: 10,745
From: Buffalo, New York
Re: what rotating assembly would you go with?
The worst choice is clearly the 396 with 6" rods. That means a compression height of just a little over an inch. This is not comaptible with the pistons you need to run high boost on pump fuel (i.e. low compression) and the thick ring land needed.
Rich
Rich
Registered User
Joined: Nov 2004
Posts: 459
From: Aurora, CO
Re: what rotating assembly would you go with?
Originally Posted by rskrause
The worst choice is clearly the 396 with 6" rods. That means a compression height of just a little over an inch. This is not comaptible with the pistons you need to run high boost on pump fuel (i.e. low compression) and the thick ring land needed.
Rich
Rich
Retired
Joined: Oct 1999
Posts: 3,166
From: Inside Uranus
Re: what rotating assembly would you go with?
Originally Posted by DavesLT1
is the 396 with 6" rods ok for an engine that is N/A?
Mike
Registered User
Joined: Nov 2004
Posts: 459
From: Aurora, CO
Re: what rotating assembly would you go with?
Originally Posted by Kraest
Definetly. That's what I ran in my Z28. 120+ mph traps at 3870 lbs on ported LT1 heads and a hydraulic roller.
Mike
Mike
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