those intake valves are big and heavy to be turning high r's w/o valvetrain upgrades....

 

so how did you determine its the stock rod bolts fault? just cause your motor let go at 6200?


dont get me wrong, i am just currious, it would be nice to know the limiting factors of stock rod bolts,i actually never checked or found out the limiting factors of them? wonder if anyone knows? or even if a stress test or something has been done on them?

 

DAMN! i guess i needa pull my motor and have womacks balance the rotating assembly to handle 7500rpm an upgrade valves. i can live with that small fee and just do a rebuild while its apart. i wouldnt mind boring it out .030 and putting a cam thatll pull to 7k. if i bored it out, id upgrade the heads with a p&p, mill them a lil more, do a FASt 102mm, 1 7/8" LTs with 3.5" exhaust.... wow the gears are turning along with the future divorce ill be getting if i do that lol

 

Well I guess I really don't know 100% that it was the rod bolt that let go first but when it came apart that was the only logical explanation the heads were fine etc etc the way **** was broke it appeared as though a rod bolt came apart. Low mileage, conservative tune 202/208 cam 918 springs, otherwise stock 5.3 un molested

 

IMO $70 for the insurance is worth the piece of mind. From what I've heard from some other engine builders is the cheap ARPs will handle more than the stock PCM can handle as far as spark and fueling quick at the time was said to be 8000rpm

Personally $70 and be comfortable, or save it and risk blowing another engine just not worth it. Even if that isn't what caused my failure

 

well if i dont run 12.5-12.7 now then i may think about upgrading the motor parts. i dont really spin my motor to 6800 all the time. i do A LOT of easy driving and every now and again ill get in a race. i beat on the motor more before it was dyno tuned than i have since the beginning of june. i dont DD the truck anymore but i want it just as reliable as it was when it was stock.
ill be upgrading to a tru-cool 40k after i drop my truck. ive kinda been more into looks lately since all my performance parts are installed.

 

gotta agree with ya, rather spend the 70 bux for insurance than spend 4k later even though i am spending more then that now on a damn 408

 

very good point, but i dont run stock valves well the l92 valves..

 

Skert: are you going bigger on your own or bc of a problem that you have to rebuild?

 

if you do your research you can get the arp2000 bolts for $80. good ole price matching thru summit.