I want to know what the capabilities are. I have an S-trim with a pulley that should make 10-11 psi, and I plan on getting AFR 195's when I build the motor. The cam is a 227/239 .560/.577 on a 115 lsa. Will that setup be too much for the stock crank and rods? Will I have any room to expand to maybe a T-trim compressor? Comments on this setup is what I'm looking for.

 

get forged rods and pistons. the crank should handle it, but the rods wont.

 

Honestly I agree with gxr. For what you will spend on block prep and new bearings/gaskets/fluids blah blah I would spring for a few hundred more and do a cheap set or rods and a crank.

I hate the old saying "do it right the first time" but the more I learn the more accurate it becomes.

 

I've got 30,000 miles on my rebuilt stock rods and crank. The hypereutectic pistons are what you need to throw away. I beat on it every day with with 15psi of boost. Make sure you replace the rod bolts with some ARP's.

 

Same here as 97WS6Pilot:stock rods and crank, forged pistons AND 30K!

 

the stock rods are plenty strong, its the rod bolts that aren't so strong. Upgrade the rod bolts and the pistons and have some fun.

 

I've thrown 18 psi and made the power in my sig with a single turbo and stock rods/crank. ARP bolts though! I went all forged because I wanted to not because it broke. I ran it almost 2 years.

Bill

 

I had stock crank, forged rods/pistons and threw my balancer off due to 11 PSI boost and still made 530rwhp/595rwtq. My stock crank handled the power, just my balancer gave way first. Make sure you have an adequate balancer/hub combo for your power needs or you will have a bare block waiting for new crank/pistons/rings etc.like me.

 

I have been looking around at bottom end parts that past couple days and a 383 is more money than I want to spend but I was ready to do it because I thought it was necessary. Now that I am hearing about your combos that are making the same power that I expect to have when I am done I'm tempted to just do the 355 with some je -31cc pistons and put more money into the heads, I'm thinking afr 195. What do you think is the max power that a stock crank and rods can handle reliably?

 

I would say that the stock crank is a little stronger than the stock rods. But the combo should be able to handle 550 RWHP reliably if built correctly. Many people have done more than that, but you are taking your chances....

I wanna hear some stories of people breaking the stock crank and/or main caps. I'm sure it has been done. Come on people!....

 

I'm also running stock crank and rods. I've been pounding them with 12# of boost for 3 years now!

 

Stock crank/stock rod 355 with forged pistons a ARP rod bolts and main studs here. It's been built for 3 years and running 9-11 psi with no problems.

-Chris

 

Sorry to bring back an old thread. But for the cost of ARP bolts and refurbishing the stock rods, would it be better to just get some eagle rods?
Im just throwing around some ideas for when I build my boost motor.

 

You would still want the ARP bolts no matter what rods you use. So now the cost differential is stock rods versus new forged ones.

 

i was toying with this idea as well, just forged pistons, and stock everythign else, but ill see how the cards play at the moment when its time to throw everything in