numbers for PRC 5.3L heads, 228R cam, Dynatech LT's
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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.
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.
Last edited by 2001whiteSS6spd; 02-06-2007 at 05:02 PM.
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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
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
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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
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Originally Posted by JimMueller
How do Dynapack results compare to Dynojet or Mustang?
Eric
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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
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
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Originally Posted by 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
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
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Originally Posted by quiet_storm98
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
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.
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Originally Posted by 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.
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.
Last edited by quiet_storm98; 02-08-2007 at 01:14 PM.
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Originally Posted by quiet_storm98
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
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.
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Originally Posted by 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.![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)
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.
![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)
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Originally Posted by 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.![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)
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.
![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
![](https://ls1tech.com/forums/signaturepics/sigpic210_1.gif)
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.