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the LS3 427 with the 4.25" stroke vs the LS7 427 with the 4.00 stroke, what would be the rpm difference, and which would provide more torque in the 2,000 to 3,500 rpm range?
ie out of corners and UP to speed. Yes I do know that each engine is specific for the intended build purpose.
the LS3 427 with the 4.25" stroke vs the LS7 427 with the 4.00 stroke, what would be the rpm difference, and which would provide more torque in the 2,000 to 3,500 rpm range?
ie out of corners and UP to speed. Yes I do know that each engine is specific for the intended build purpose.
TIA
tom
Were using a 4.125" stroke. The larger stroke will make more torque. We recommend using the 4.000" stroke in road racing applications because it allows you to use a better piston design that's going to be beneficial in extended high rpm. The biggest difference in power curves and rpm levels is going to be in the top end of the motor, since the LS7 block will accept LS7 heads and the LS3 block will accept LS1 or LS3 heads. The LS7 parts typically make more power in the 6500-7000 range and the LS1/Cathedral parts typically make more torque.
Originally Posted by FL1BY
Seth,
Thank for answering alot of questions WITH pricing information. It is appreciated, and as soon as I get back from Kuwait I will be in touch. Thanks
So it sounds like all the interals on this one are forged, but it is probably not best for boosted applications because skirts too short/piston might pull out of cylinder?
If so, what would be a proper stroke that would not compromise boost capability, and what would the cubic inches come out to on that one?
From: Birmingham, AL www.hinsonsupercars.com 205-909-9402
Originally Posted by Jack Daniels
So it sounds like all the interals on this one are forged, but it is probably not best for boosted applications because skirts too short/piston might pull out of cylinder?
If so, what would be a proper stroke that would not compromise boost capability, and what would the cubic inches come out to on that one?
Yes, everything is forged. The piston is shorter for this combination, so it's not recommended with forced induction. For a forced induction application, we recommend using a 4.000" stroke, which would make it 415 cubic inches.