I am going to be doing my 6L swap soon and am wondering just how high I can spin it. I will of course have a cam, pushrods and valvesprings to handle the rpm just wondering what the bottom end can take.

 

id turn it 6500

 

Im thinkin 6800-6900 should be safe Im sure someone will step in and tell me. I think I could spin it past 6500 safely. BLK6.0HD spun his up to 7300 without the rod bolts and sprayed a 250 shot on it and didnt blow it.

 

thats alot of nitrous. ill bet that was fun. i would only turn it till the cam stops pulling. my cam feels like it will never stop pulling but i shift at like 6100

 

I'll be swapping to my lq9 with rodbolts, cam, pushrods, and valvesprings pretty soon and plan on shifting about 6500-6600. I would put some rod bolts in there. It could save you alot of cash in the long run.

 

Thats what I said in the title Im going to put arp rod bolts in it. Yes the shifts points will maximize the hp curve of the cam but I can select a cam too based on how high I can spin the engine up to.

 

Spin it till the valves float, then back off 50 rpm I'd like to see 7000 when/if I build my 408, but havent really checked in to it yet. I guess it depends on how well the internals are ballanced, and how well the short block is built, and of course your valvetrain. I would think a built short block would be able to handle 7000 safe. I spin my stock 105k mile 5.3 with cam, and springs to 6500, and (knocks on wood) have yet to have a problem. deposited.

 

I'm running mine up to 6500 now. I'm actually not sure if its helping me that much over my previous 6300 shifts because of my recent times, but then again it is stupid hot right now.....

 

Cammed and springed 5.3 here and running it to 6600 almost daily...oh yeah w/ 189,000 on it...

 

thats what I like to hear!