2001whiteSS6spd

I went in for a dyno tune today at Synergy motorsports in fremont. Rick seemed very quick and professional. The car runs very nice and smooth and pulls very strong. I almost smoked a few cars on the way home but they didnt want none.

Mods =

PRC 5.3L stage 2.5 heads(2.04", Dual springs, Tit. retainers)
TSP 228r cam on 114(trying to squeak by the sniffer)
Dynatech supermaxx header system with cats
Stock type GM MLS gaskets and head bolts
SVO 42lb injectors
Magnaflow exhaust
SSRA
SLP lid
SLP Maf
Stock throttle body and LS6 intake
Stock clutch
Stock balancer
Stock rear diff
Stock rockers
Stock fuel pump
crane 7.4" chromoly pushrods
LS7 lifters
New GM timing chain

Numbers = 422rwhp at 6500rpm/390rwtq at 4838rpm

I will try to get the graph up later, and a thanks to Rick and the crew at synergy. I highly recommend them.

Ryan02SS

iTrader: (3)

Congrats! Our cars make identical power. These small 224-228 cams make awesome power with no driveablity drawbacks.

2001whiteSS6spd

Dyno sheet:

Red line is the first run.

Yellow line is the final run.

Rick told me the A/F ratio is about 12.8:1

And total timing is at 26 degrees

Red99TA

iTrader: (11)

Pretty good numbers...now throw a 90/90 on there!

john563

iTrader: (17)

nice numbers congrats

JimMueller

iTrader: (9)

How do Dynapack results compare to Dynojet or Mustang?

GreenBlood

iTrader: (6)

kick *** numbers...

loloone

iTrader: (4)

From what I gather they tend to be higher. Great DD combo you got there

TXZ28LS1

iTrader: (5)

sweet numbers man! if i ever get a chance to go back home to the bay area, ill swing by that shop and check it out!

2001whiteSS6spd

Thanks for the posts. The car is a real pleasure to drive now with the extra power. Its a very good daily driver. The engine is smooth as silk above idle, and has a little shake at idle. The engine pulls fukin hard. LS1's

I did a search on Dynapack dyno's and some are higher than dynojets and some are lower. I think its a very safe and accurate way of measuring your cars power. Its takes the tires out of the equation.

Eric

quiet_storm98

iTrader: (48)

nice numbers..i might be getting a combo almost identical to yours but my cam is slightly larger..i might save up some money and go for some afr or tfs heads though, not sure yet

2001whiteSS6spd

Everybody also needs to know that I left alot of room for improvement including:

Not the best performing headers
Catylitic converters
Non milled heads
.060 GM head gaskets
Stock balancer
Non true dual exhaust
No fast 90/90


I would say there's an extra 40-50rwhp in these things that I mentioned above thats 470rwhp.

And if you did go with a lil-bit bigger cam another 10rwhp.

So I am happy with the numbers I have for now, and a little bit down the road
I will probubly top it off with a ported fast 90/90 and a balancer to see where that gets me.

Eric

SPLATT

iTrader: (1)

awesome numbers. and i bet its a torquey hooker!

quiet_storm98

iTrader: (48)

ummm all those things wont add 40-50 rwhp if you had all those things it might get you to about 450 but definately not 470 with a 228 cam...after all i believe there was a guy who posted in the dyno section a few weeks ago that had the MS3 with those heads and all the boltons you mentioned and i think he put out just over 450 rwhp

2001whiteSS6spd

I think you need to use the search button a little more, these heads are worth more numbers then you are inquiring.

I would put my money where my mouth is but the bank account is a little low.

It seems these heads are selling very well, and we should see many more numbers coming out very soon.

quiet_storm98

iTrader: (48)

lol i think you have your hopes a lil high that is all im saying if you look at all the people with these heads that have all the extra mods you just listed they aren't putting out 460-470 rwhp.Im not saying it isn't possible but if you look at my previous post i said that you won't reach that much power with a 228 cam.I have been researchig these heads for a while and so far the highest i have seen is the thread a few weeks ago with the guy that had the MS3 cam,fast 90/90 and all the other things done to it to add some power and he was puttin out a lil over 450 so maybe you need to use the search button a lil more buddy

MARKSZ71

iTrader: (3)

with my prc 5.3 heads 226 226 cam,fast intake i made 426

2001whiteSS6spd

Ok buddy, heres some search results.


https://ls1tech.com/forums/showthrea...&highlight=prc
ls6 intake 460rwhp

https://ls1tech.com/forums/showthrea...&highlight=prc
480rwhp

https://ls1tech.com/forums/showthrea...&highlight=prc
ls6 heads 518rwhp

https://ls1tech.com/forums/showthrea...&highlight=prc
450rwhp ls6 heads a4

thats only going to a couple threads, search PRC in the Dyno section theres 6 pages of numbers. Is there some low dyno numbers? Yes. But every head manufacturer has some low dynoing cars. Just dont make PRC out to be a low hp head.

quiet_storm98

iTrader: (48)

lmao have you read anything i said..i didn't say it was impossible to reach high horsepower with prc heads i just said you wont get those numbers with a 228 cam and the 5.3 heads..if you read my first post you would have seen that i said i might also be getting the stage 2.5 5.3 heads myself. i have seen all of these threads before so they are nothing new to me. but as you can see all the cars in these threads have huge cams which is basically my point that you can get good power out of the heads but you will need a big cam

Patrick G

iTrader: (14)

Only 1 of those 4 vehicles are running the 5.3L heads FWIW. The rest are running LS6 heads.