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Just installed a set of .030 over SRP's in a 502 last week.
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Pistons
Originally Posted by Griswald
(Post 2547593)
Since when? I just put a new set of SRP flattops in mine and had another friend buy a set just last Thursday. This doesn't sound right at all.
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Originally Posted by fastek
(Post 2547447)
502 replacement pistons are not availabe at this time for the 502 .i needed a set myself my machine shop told me the same thing . im a motor head and told them to stop all work and i would get my own. guess what i called everyone . even spoke to je direct they were making all pistons for gm but lost the contract so no more available . i had mine custom made by manley. 502 replacements identical only 0.30 600.00 to my door . who is doing the machine work ????
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Originally Posted by DMAX
(Post 2547193)
My machine shop tells me since I gotta bore my blocks he has to have somebody make the pistons from scratch which means $$$. This dosen't sound right to me . Does somebody make an application for this issue, their getting bored 34k. Their GEN 6 502's Thanks.
I had my 502 rebuilt and it was already .030 over, so instead of going to the next size (.060). my builder suggested having custom pistons .035 over made because he said it would leave me room to go even bigger at the time of next rebuild, and that .060 was the "safe" limit on my block. I think the pistons took 4 weeks to get and cost $650. So I did it. This way if it needs to be bored again, I can safely do it. |
How does everybody feel about going write to .60 over ??
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Originally Posted by DMAX
(Post 2547801)
How does everybody feel about going write to .60 over ??
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Originally Posted by JCPERF
(Post 2547820)
I have 2 sets of gently used JE 4.500 pistons which would make your 502s 509s.$500 for all 16
That is a really good deal. I had the same problem with JE earlier this year. No pistons in stock and was told a 8-12 week delay. This was in February. I called Bob Teague and he had some .030 mini domes in stock for a 6.385 rod, so I bought two sets and two sets of Manley rods from him. You may want to give him a call to see what he has on the shelf! Dave |
My guess would be Mahle is making the GM branded pistons now.
Ross, SRP, Probe, even TRW/Speed pro will all have a high quality compression comparable piston to wha the originals were. they don't only have to come from the OE manufacturer to be correct. As fa as going .034 over, have you checked to see if there are .040 oversize available? That is a less common but still off the shelf oversize for many engines. Possibly 502 as well? |
pistons
Originally Posted by axapowell
(Post 2547837)
That is a really good deal.
I had the same problem with JE earlier this year. No pistons in stock and was told a 8-12 week delay. This was in February. I called Bob Teague and he had some .030 mini domes in stock for a 6.385 rod, so I bought two sets and two sets of Manley rods from him. You may want to give him a call to see what he has on the shelf! Dave |
4.500 minus 4.467 = .033
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