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View Full Version : Raptor Cams! nice bump to 405rwHP 410 Tq



68fastback
02-16-2012, 03:00 AM
Livernois says they developed their own cams for the 6.2

...nice bump too -- from 336/359 to 405/410 :woohoo:

Check out this LINKY ...video about 2/3 of the way down (http://www.svtperformance.com/forums/front-page-news-143/823593-livernois-motorsports-6-2l-raptor-cam-swap-results-video.html)that page at the bottom of the extensive picture stack. That 6.2 2V has a nice looking 2V geometry :banana:

Appologies if this is posted somewhere else but I could not find it anywhere.

Gr8snkbite
02-16-2012, 03:31 AM
:wtg:


time for VD to mod.....:giggle:

68fastback
02-16-2012, 04:07 AM
:goodpost: ...and he only has 19 weeks to git 'er done for Orfstock :banana: :grin:

VaporDude
02-16-2012, 03:18 PM
:wtg:


time for VD to mod.....:giggle:

For 35 RWHP?......nah.....I'll pass. That would be too expensive of a mod for that little gain.

Shlbylvr
02-16-2012, 04:16 PM
:goodpost: ...and he only has 19 weeks to git 'er done for Orfstock :banana: :grin:

I might not make Orfstock this year. :(

Joe G
02-16-2012, 05:25 PM
I might not make Orfstock this year. :(

:what:

Shlbylvr
02-16-2012, 06:13 PM
:what:

Work is questionable..

Joe G
02-16-2012, 06:23 PM
Work is questionable.. Current work or new work?

Shlbylvr
02-16-2012, 06:39 PM
Current work or new work?

Both, we're unsure of the change over date. I haven't accepted the new job as they haven't given me my Salary, even though I have the job.

68fastback
02-16-2012, 07:11 PM
For 35 RWHP?......nah.....I'll pass. That would be too expensive of a mod for that little gain.

...it's not 35

...69rwHP/51Tq

...from 336rw/359tq to 405rw/410tq

Joe G
02-16-2012, 07:18 PM
:nonono: ...not 35

...69rwHP/51Tq

...from 336rw/359tq to 405rw/410tq tqtqtqSince TG left, VD must be the new forum dufus. :nonono:








:tiptoe:

mustang loco
02-16-2012, 07:31 PM
:ohsnap2:

68fastback
02-16-2012, 07:44 PM
lol ...prolly just didn't look at the pics/video.

I see Livernois came back on my Q saying "mileage didn't change, but he drives it much harder now" ...seems thoroughly implausible unless their tune is considerably leaner since bigger cams are not going to add fuel efficiency. I asked if the stock tune was fat (lol).

I just don't get why folks can't be honest. Surely he knows it will hit mileage a bit unless leaner (especially with the VCT range cut from 50-somthing* to 20 with the phasers to prevent valve contact) -- and, at best, mileage will be about the same (if you drive the same). But the customer now drives harder and gets same mileage :doh2:

He'll probably realize: "...well that was just customer's perception" or something.

Before I'd let them touch my truck I'd now want to know what their tune looks like -- how much came from the cams and how much from 'pushing' the envelope. My guess is about 50/50 since getting a 21% rwHP increase just from mild cams seems implausible unless the tune is considerably more aggressive too.

mustang loco
02-16-2012, 07:56 PM
getting a 21% rwHP increase just from mild cams seems implausible unless the tune is considerably more aggressive too.

that's lot of gain (59rwhp) for cams on n/a motor as well imo,was reading on another site that our blown 5.4's with cams would gain roughly 40-60 rwhp(avrg anwsers)..but def. not a pro here,just sayin' what I read.A vendor was stating also that they use cust. grinded cams for upgrades and that no tune was required( for you're already modded 5.4 set up) and gains were roughly in these #'s as well..What I found was really interesting was that 2-3lbs of boost could be drop with cams upgrade,didn't have a clue about this,something I'll have to think about for sure!!(some even mentionned that no really big gains but did see a 3lb drop in boost...boost drop,less stress,less heat build up...winning scenario imo,eventhough not all that cheap)

VaporDude
02-16-2012, 08:12 PM
...it's not 35

...69rwHP/51Tq

...from 336rw/359tq to 405rw/410tq

Don't forget that they also added a few other goodies like headers and such. They had a dyno from a previous owner with those goodies and the truck made 370 RWHP. Now factor that into the equation, what do you get when you subtract 370 from 405? :doh2:

VaporDude
02-16-2012, 08:14 PM
Since TG left, VD must be the new forum dufus. :nonono:








:tiptoe:

Go back re-read that article again. :doh2:














:moon:

Joe G
02-16-2012, 08:32 PM
Go back re-read that article again. :doh2:














:moon:I don't read back. :look:

VaporDude
02-16-2012, 08:39 PM
I don't read back. :look:

Neither do I but there are a few things I do remember.

68fastback
02-16-2012, 08:48 PM
that's lot of gain (59rwhp) for cams on n/a motor as well imo,was reading on another site that our blown 5.4's with cams would gain roughly 40-60 rwhp(avrg anwsers)..but def. not a pro here,just sayin' what I read.A vendor was stating also that they use cust. grinded cams for upgrades and that no tune was required( for you're already modded 5.4 set up) and gains were roughly in these #'s as well..What I found was really interesting was that 2-3lbs of boost could be drop with cams upgrade,didn't have a clue about this,something I'll have to think about for sure!!(some even mentionned that no really big gains but did see a 3lb drop in boost...boost drop,less stress,less heat build up...winning scenario imo,eventhough not all that cheap)

yeah, there's no need to make the tune more aggressive, just adjust it for the increased flow/power. With headers and optimized intake on a blown 5.4 (the 5.4 at 15# boost is the equivalent of an 11-liter motor :faint:) I can see 40-60 gain, but on a NA 6.2 with smallish TB and stock headers. etc it does seem implausable unless the tune is hotter.

Cams can reduce boost to the extent they permit more (easier) flow ...headers will really help with that too for the same reason, especially with cams. Since NA motors at sea level are 0 'boost' (but that's still 14.6 psi) which is always constant, less restrictive flow is the only way to get more through the motor and cams, headers, etc do that. You see boost drop (especially with a fixed-displacement SC) when you add bigger cams and headers because the same amount of air is being pushed by the SC but the flow improvements reduce the back-pressure (boost). With NA the boost (atmospheric air column weight of 14.6psi at sea level) is constant but both benefit for similar reasons.