Quote:
Originally posted by wp?civichb
SORRY An ls vteck is an ls block with a b20 head formally known as a frankenstein motor.
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Then I think you mean an LS VTEC.
Iv never heard of VTECK.
And since the B20 is not normaly a VTEC engine, then I think you actualy mean an LS block with a B18c or B16a head, which yields a higher compression ratio and slight larger cupic capcity than a B18c.
The B20 VTEC is a B20 block fitted with either the B16a or B18c head to give it VTEC.
Both are known as Frankenstien engines.
Fitting a B20 with an LS head sounds a bit silly to me, as I think you will find they both share the same head (or a very similar one)
And in all cases I would have to choose the B18c, while the LS and B20 VTEC have been proven to work, I dont think the gains from the extra capacity are worth the amount of work required, or the still unresolved reliablity issues associated with matching a block, cranks and rods up to a head it was never designed to take, and useing the combo to produce hp numbers they were never designed for.
With the right work done to a B18c the same gains can be realised with out the same sacrifices to reliablity.