silvolite good brand for 340 upgrades? Otherwise I would choose icon or KB243 for bump compression up a bite for 72 340 future build.
Silvolite pistons (340)
- Thread starter oldpunko77
- Start date
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Plymouth 65
I'll be in the shop
There decent for a stock lower compression rebuild. The others you mentioned are performance build pistons. 65'
Our Diamonds last picture worked great for many years and are still like new. For our new pistons my son bought Ross to up the compression a little bit. Buy a good pistons they are the heart of the engine.
Keep an eye on the weights as well, or you'll be adding a "balance" to the budget.
Silvolite is a stone stock cast replacement. Not great for RPM over 5500 or so and not recommended for high compression or nitrous. You could probably get by with a 150 plate shot, but use it conservatively.
When ever you replace pistons you balance the engine. That is a must at my sons shop. They never weigh the same.
I hear you. I'm using Silvolites in my build with stock rods to retain the somewhat original balance. Did all the weight measures and they are pretty darn close. No balancing for this cat.
My son does a lot of race engines here . You would not believe the power difference in an engine when the balance is perfect.
Some over 9000 RPM's and they feel like an electric motor.
Harmonics really slow things up. Put a slightly bent pulley on an electric motor and see what happens. It will never reach advertised RPM's
I was down in the shop tonight and my son was balancing a 500 inch new Molnar BB race crank. I took a video tonight. You would not believe How far it was out and how much you could feel it in the Balancer. He is going to cut the counter weights down alot and rebalance it I'll start a thread to show the difference. He was chucking it up in the lathe when I walked up.
No doubt, pretty impressive stuff.
Good to know I prefer little higher then 9.5 or tad under 10.1 I am aware of 72s version were 8.5 I look at silvolite you are right they aren't good for performance wise thinkin would go srp or KB243s
Dan the man
Well-Known Member
I would balance it anyway. The pistons you are going to could weight more or less than the ones you are replacing
That's why I said keep an eye on the weights.......Build with stock replacements. No need to balance if they weigh the same.
Rat Bastid
Dunamis Metron
This. If it’s a stock engine with a stock replacement piston you can send it without balancing it.
Obviously you’d want to balance it but for what the OP is evidently doing it’s not necessary.
I cannot stress to you all enough how important it is to balance an engine when replacing pistons. You say factory built engines were never perfect? Could be why some ran better and lasted longer. Why anyone that does engines would downplay balancing and say its not necessary is beyond me.
Balancing is not only important for power & rpm's but also for endurance.
. I taught my son that balancing was the most important thing to do on anything that spins when he was 10 years old building slot cars. He would balance everything.
Balancing is not only important for power & rpm's but also for endurance.
. I taught my son that balancing was the most important thing to do on anything that spins when he was 10 years old building slot cars. He would balance everything.
anybody who doesnt is an
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Hellrats
Just another dumbass
I think Speed Pro pistons would be closer to OEM than the KB silvolite pistons
I believe the Speed Pros are dead on, actually.
I can see why many would choose that so if I want spend little more other choice to use lighter pistons set .
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