New here from Memphis (Arlington)

[davbell22602]

Welcome

 

[HotRodPC]

welcome to the forum

FYI a 2 bolt block is not junk, in all honestly the 4 bolt block is no better then the 2 bolt. ONLY way the 4 bolt is worth paying extra for is if it has the splayed main caps.

Welcome to GMSB GOBR. Truck sounds healthy with a little tuning, or maybe it needs warmed up.

I'll agree ALMOST 100% Pops. Only part I will disagree, is that the 4 bolt does give a little more strength. But, NOWHERE near what splayed mains would do. Actually is better to start with a 2 bolt block and have splayed mains installed by drilling and tapping the block, and then of course you need a align bore to the mains. I wouldn't do that to a 4 bolt cuz it's already been drilled in that area and it's now weak if you cross those threads. I never pay what people want for a 4bolt. You can pay $200 for a 4 bolt core is you want, but I'll take the 2 bolt for $50 and likley spank your ass in your 4 bolt, and stay together. The big trick is using the the right ARP bolts, proper specs, and the most imortant of all, BALANCING. Balance the whole rotating assembly to within a 1/2 gram, that in itself takes alot of stress off the bottom end. Make sure your rods are resized, trued, and shotpeened with ARP bolts etc. I've seen 2 bolts turn 7000 consistantly run after run after run, and even go 7500rpm with rev limiter off and not come apart. It just started to float valves at 7500, power band was 3000-7000 so that's where he shifted and set rev limiter to 7200. Of course you need your crank worked on too like crossdrilling, and chamfering, along with some oiling work like restriction to the top end. At any rate, point is, 2 bolt is no slouch and 4 bolt is in fact overrated.

 

[HotRodPC]

I'm sure most won't understand your siggy and the XE274. The XE274 is Comp Cam, Xtreme Energy 274 intake duration.
Just curious, is that the cam in the truck when you took that video you posted up???