Which Pistons, Cast 402.
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TECH Enthusiast
Joined: Jan 2004
Posts: 608
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From: New Zealand
Which Pistons, Cast 402. Hi,
I am replaceing my 383 LS1 with a cast 402, power goals are 8-900 rwhp and a max of 20 psi boost (pump gas & meth)
I have a new LQ4 block , callies 4" crank from previous engine, will go with either the ARP 2000 eagle rods or callies rods,
heads - the choice of std 317s (72cc) or ported 241s (67cc)
LS9 gaskets
I'm having trouble deciding on pistons, probably Diamond or Wiesco.
they only seem to be available in -15 or -28 cc .
-15cc pistons with 72cc heads come in around 9.63:1
-28cc pistons with 67cc heads = 8.7:1
would have liked to have been in the low 9:1s for CR.
is there anything available between the -15 & -28cc pistons for boost ?
I am replaceing my 383 LS1 with a cast 402, power goals are 8-900 rwhp and a max of 20 psi boost (pump gas & meth)
I have a new LQ4 block , callies 4" crank from previous engine, will go with either the ARP 2000 eagle rods or callies rods,
heads - the choice of std 317s (72cc) or ported 241s (67cc)
LS9 gaskets
I'm having trouble deciding on pistons, probably Diamond or Wiesco.
they only seem to be available in -15 or -28 cc .
-15cc pistons with 72cc heads come in around 9.63:1
-28cc pistons with 67cc heads = 8.7:1
would have liked to have been in the low 9:1s for CR.
is there anything available between the -15 & -28cc pistons for boost ?
