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Old 10-28-2009, 11:30 AM
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Chevy 3.3l v6 forged pistons?

HI i`m looking for preformance pistons, but cant find eny.

Car is 1978 el camino.
Engine is 90 degree 3.3l v6 l200 stroke 3.480 and bore is 3.500.

Any ideas, links are welcomed.

Thanks.

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Last edited by Camino78; 10-28-2009 at 12:24 PM.
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Old 10-28-2009, 01:24 PM
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The engine you have really is a 267 Chevy V8 with 2 cylinders chopped off. Since the 267 was not a performance engine and nobody bothered to hot rod it because of it`s small displacement forged pistons were never made for it.
You should be able to get standard cast or hyper pistons for it without too much of a issue. However, the best solution would be to replace it with a 4.3 V6 which is a 350 chevy with 2 cylinders cut off. If you can score one out of a chevy astro van from the 80`s your on the right track as they came with factory headers and a carb mounting flange for a Quadrajet.
You can call piston companies and ask them to make you set of forged pistons for your engine, but the cost will be very high.
I have a 4.3 in my pickup with a TBI, after doing a rebuild and adding some performance pieces, it has torque like gangbusters and rev`s fast, making it a pleasure to drive on the street.
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Old 10-29-2009, 08:18 AM
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i have a remanned short block of one them engines bored 20 over an crank cut 10 under an new cam an timing set an would sell it for $250.00 an also a 4.3 is a 305 two cylinders removed

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Old 10-29-2009, 08:27 AM
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A 4.3 is is a 350 missing two holes. Runs a 4" bore, uses the same size rods, valves, ect. a 305 runs a 3.735" bore. A 350 slug will fit in a 4.5, actually has the same p/n.
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Old 10-29-2009, 09:57 AM
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The 4.3 rods are the same lenth, but the journal size is 2.250 compared to the 350`s 2.100 size. And yep, 350 pistons work fine in 4.3`s as long as they`re balanced with the rest of the rotating assembly.
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Old 10-29-2009, 11:02 AM
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I`am conscidaring my options.
easyest for me would be locate 3.8l v6 229.
For that engine speed pro have forged piston set for sale.
And that engine uses the same comp cams camshaft kit k-15-200-4, that i have bought for the 3.3l engine.

But as some of you have notised, im living in finland.
So finding the 3.8l engine is lidle bit harder.

Still no worries yet, few guys have them on sale on the local sites.
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Old 10-30-2009, 11:20 AM
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Ok.
I finally concidared my options and bought 89 year astro 4.3l v6.
And better yet faund a supercharger allso. Now the madness can begin.
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