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I'm posting this in this section for the guys who don't frequent the dyno section....
Thought I'd share my stock bottom LS1(6) results. Been together several years and moving on now. So decided to share it...will give me something to look back at and remember the fun and aggravation I went through.
04Z
38K stock bottom (of course flycut)
Modified Vararam
NW 102TB
Fast 102 (massaged by Tooley)
Deka 80lbers (pump E85)
TEA 243's (hand finished by Brian)
Stock rockers with trunnion upgrade
NGK TR6
Trend 3/8" 0.080" wall single piece pushrods
0.027" cometic
Cam = EPS 23x/25x 63x/61× on a 11x (very stable lobes, Cam Motion core)
Comp drop in short travel lifters (set at 0.010" cold)
Moroso vacuum pump (7" at idle/ 21" at max rpm)
Mezerie elec water pump
LG 1 7/8" super pros with 3" X-pipe and dynomax bullets
Would usually shift somewhere around 7700rpm
Car had a massaged T56, RXT/ Fidanza and 4.10 gear
I'm sure I have forgotten something... lol
Car would trap 132+ in crappy +1000' DA @ 3000lbs-ish
Be happy to answer any questions or comments...
Here is one of many dyno graphs...made roughly 520/440
theoretically, the IRS eats a little more power so in an fbody we could guess that he would have made about 526-530. would it be wrong to guess despite his cam being huge, that the vacuum pump could be responsible for a good 8-11 rwhp on this setup? finding 500 rwhp ls1 cars can be tough to find let alone 525+. the huge cam could be contributing 15-20 more than your typical ls1 with a cam, but everything else besides the pump is pretty typical. this is a LLSR cam id guess?
theoretically, the IRS eats a little more power so in an fbody we could guess that he would have made about 526-530. would it be wrong to guess despite his cam being huge, that the vacuum pump could be responsible for a good 8-11 rwhp on this setup? finding 500 rwhp ls1 cars can be tough to find let alone 525+. the huge cam could be contributing 15-20 more than your typical ls1 with a cam, but everything else besides the pump is pretty typical. this is a LLSR cam id guess?
So...first off, I'm not sure on a lot of the dyno stuff when it comes to what makes more power or not. Combo was put together to drag race, not for a dyno number. "They" say dynoing through a 4.10 will eat power also...don't know ?
Secondly, cam is definitely a healthy size...but by know means huge. Hell its smaller than a infamous cam only T-rex...lol
We did pull the vacuum pump belt off to see what it was worth. Of course there is zero or little gain until you get it up into its sweet spot...up in the rpm range..like 5500+ before we saw any gain from the pump (6hp peak). The vacuum pump was put on because I was tired of blowing the dipstick out going down the track.
Like I said, the combo was put together race, not a dyno queen and make the most average power in a given rpm range (other cams I've had made more peak power but were slower at the track).
Power under the curve is what's fast...not a peaky dyno queen...;-) We worked real hard to flatten out the curve !!
Not a low lash deal at all....stock rockers should give that away...
I'm a n/a guy at heart...so moving on to a turbo is going to be fun...but
I will always wonder how much better it could have been...LLSR, better manifold, better heads...etc...the list never ends !!
I'm a n/a guy at heart...so moving on to a turbo is going to be fun...but
I will always wonder how much better it could have been...LLSR, better manifold, better heads...etc...the list never ends !!
Thanks...
.
I am with you there. It never does end thats for sure. I can vouch for 539. I think there could have still been more in it, but diminishing returns for sure.
That probably answers your better heads, manifolds, LLSR question anyway.
06-21-2018, 09:14 PM
520rwhp stock bottom LS1(6).... 
