ls7 lifter with 228/232 and 5.3 heads what pushrods size?
02-10-2010, 09:01 AM
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ls7 lifter with 228/232 and 5.3 heads what pushrods size? I need to get my car runnung asap I have to sets of pushrods 7.400 and 7.350 which size would work on my setup? the heads are ported only "not milled" with graphite gasket. didn't have time to order pushrod checker so anyone running this similar setup help plz!!! Also stock rockers...
02-16-2010, 11:52 AM
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02-16-2010, 12:14 PM
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I seen a thread or sticky here or performance trucks that said the LS7 lifter was .050 taller than the stock LS7. Also seen where a lot of guys are running the 7.350 rod to get rid of some of the sewing machine noise.
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02-17-2010, 09:38 AM
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The LS7 lifters to seem to setup a bit taller than the OE lifters. While they are a direct replacement, if they set up taller, than you will need to adjust the pushrod length accordingly. Each combo is different and I would recommend purchasing a pushrod length checker for $20 and make sure you have the right pushrods in the motor. If you have both there, you can get a pretty decent measurement on preload by how many turns it takes from zero lash to where the rocker bolt is torqued down fully. You should see about a turn to turn and a quarter. Let me know if we can help!
Jon
Jon
02-17-2010, 09:48 AM
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The LS7 lifters to seem to setup a bit taller than the OE lifters. While they are a direct replacement, if they set up taller, than you will need to adjust the pushrod length accordingly. Each combo is different and I would recommend purchasing a pushrod length checker for $20 and make sure you have the right pushrods in the motor. If you have both there, you can get a pretty decent measurement on preload by how many turns it takes from zero lash to where the rocker bolt is torqued down fully. You should see about a turn to turn and a quarter. Let me know if we can help!
Jon
Jon
Thought this was true. I read where they set just a little higher.
