Gen 5 pistons (5.3)
08-03-2017, 07:37 PM
#1
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Gen 5 pistons (5.3) Ok, I have been looking for some time now and Cannot find the answers I am looking for. If I missed a thread please let me know.
I have a new gen3 block and I am wanting to put the gen5 flat top pistons (w/reliefs) installed on Scat I-beam rods(icr6100-927). I am building a high compression 5.3 and i was told the cam might cause PTV issues. The questions I have.....
--- will the gen5 fit correctly in the gen3 block, I have not seen any builds for it, or any info on the pistons at all.
--- do the valves reliefs allow for more PTV clearance on a 862 heads.(I don't want to assume).
Plan for the build
Gen3 5.3 block
Gen5 5.3 piston
Scat I-beam rod
862 heads (61cc)
Stock head gasket
10.5:1 compression
Carbed
Cam motion "little chopper" cam
If the clearance is there I would go to a Cometic .040 gasket and have the heads milled to 59cc, for 11.0:1 maybe a bit higher.
Thank you, I have been snooping in the shadows for some time and thanks for the forum it is full of useful info.
I have a new gen3 block and I am wanting to put the gen5 flat top pistons (w/reliefs) installed on Scat I-beam rods(icr6100-927). I am building a high compression 5.3 and i was told the cam might cause PTV issues. The questions I have.....
--- will the gen5 fit correctly in the gen3 block, I have not seen any builds for it, or any info on the pistons at all.
--- do the valves reliefs allow for more PTV clearance on a 862 heads.(I don't want to assume).
Plan for the build
Gen3 5.3 block
Gen5 5.3 piston
Scat I-beam rod
862 heads (61cc)
Stock head gasket
10.5:1 compression
Carbed
Cam motion "little chopper" cam
If the clearance is there I would go to a Cometic .040 gasket and have the heads milled to 59cc, for 11.0:1 maybe a bit higher.
Thank you, I have been snooping in the shadows for some time and thanks for the forum it is full of useful info.
08-04-2017, 12:52 AM
#2
Gen5 5.3 pistons arent flat tops.
Maybe you mean gen4? Your scat rods wont work with any ls piston. The pin is too small. They are all a .945 not .927.
Gen4 5.3 floating pin pistons will work just fine but not with those rods. Youd need a scat 26100944P for them or a 66100945 h beam.
Maybe you mean gen4? Your scat rods wont work with any ls piston. The pin is too small. They are all a .945 not .927.
Gen4 5.3 floating pin pistons will work just fine but not with those rods. Youd need a scat 26100944P for them or a 66100945 h beam.