difference in heads
04-01-2004, 06:09 PM
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difference in heads other than the valve covers, what are the differences between the heads on a 98 LS1 compared to the other years (up to 2002)? I recently picked up a set of 98 heads to get ported and polished but am now having second thoughts if the money spent would be worth the gains that i would see. The heads would be going on a 2000 with the mods listed below and eventually a cam package (not sure about which one yet). Any info would be great!
04-01-2004, 07:11 PM
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The heads are pretty much the same with the main difference being the bolts. 98 are perimeter bolt and 99+ are centerbolt. Also the coil packs mount differently to the valvecovers. Each individual coil pack is bolted to the valve cover on 98's, for 99+ each coil pack is mounted to a coil pack bracket and that bracket bolts to the valvecover. And I think the PCV system is slightly different as well, but not enough to make that much of a difference.
I switched from 98 to 99+ heads. I would not go back to 98 style heads. JMO
I switched from 98 to 99+ heads. I would not go back to 98 style heads. JMO
