Reply to thread

Message: [QUOTE="KCTurbos, post: 1282035, member: 13852"] I am in the process of building my DD. I am doing a full motor rebuild. .40 over, colt stage 2 cam, oring heads, upgraded valve springs, arp625, all new internals... I am not building a 1000hp monster and don't plan on doing any racing or spending much time above 4000rpms. Probably going to stay under 600-700hp. I am mostly looking for an awesome, clean running, quick spooling DD. I am stuck on the pistons. Valve reliefs are not "required". But I have been thinking about delipping and adding valve reliefs. Questions: Are their any performance gains/losses from valve reliefs if they are not required? How deep would you go on the valve reliefs? Delipping? are there any "proven" performance gains from doing this? Are they mostly for the top end high HP trucks and/or for those who use nitrous? Does delipping cause any loss in bottom end? That is what I am most worried about. Basically is machining the pistons needed/recommended for "stockish" trucks that don't plan on racing. [/QUOTE]

Verification

Random media

TheStrip

IMAG0524

IMG_20130528_222533_853

P6190007

amaple_grove_1001

2013-01-06_17-11-35_447

20200209_165912

102_0243

new_headlights_box

IMAG0526

Latest posts

I must be getting old… Exhaust is too loud
- Latest: ju015dd
- Today at 7:59 AM
6.0 Aftermarket
2000 f350 dually lariat
- Latest: Powerstroke Cowboy
- Yesterday at 8:30 PM
7.3 Aftermarket
T
B&W hitch and shock removal
- Latest: TexMac
- Wednesday at 2:48 PM
2017+ 6.7 Aluminum Super Duty
6
ISSUES WITH CHOATES WARRANTY
- Latest: 6.7powersmoke
- Wednesday at 2:12 PM
1999-2015 Superduty Series General
Truck slipping into 4th
- Latest: Sterling6.7
- Apr 25, 2025
6.7 Tech

Members online

No members online now.

Total: 390 (members: 0, guests: 390)

Top