243 heads on 5.3
#11
Staging Lane
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Would i be alright with PTV Clearence with the TSP 224/224 .581 .581 on a 112LSA with 243 heads milled .030 with a .040 head gasket? and also any recommendations on what kind of head bolts? Like ARP or just GM Bolts? and also are they going to be the Long or short head bolts going from 706's to 243's.
I'd go with the ARP headbolts personally, but the GM bolts will be just fine. The 2003 block will have the long and short bolts.
#13
FWIW I run a 228r cam with a 3200 stall (wish it was a little bigger stall) and 3.73s in my DD 4.8 Silverado. Very very streetable and still get 16+ MPG. With that cam and a full exhaust, stock everything else, I put down 345hp/345tq to the wheels. I don't see how that 224r cam with some good heads on a 5.3 wouldn't make at least what I make.
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True i just dont want the trouble of a engine tranny swap atm.. What bore size head gaskets do i need to get with the 243 heads?
#20
TECH Apprentice
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Try to keep your bore size on your gaskets close to the true bore size of your motor. Any little crevice you create between the head and block mounting surface can dilute your mixture costing you a little power and causing increased emissions.
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