Need advice for my LS6 headed engine build for my RS
11-09-2003, 06:49 PM
#1
Need advice for my LS6 headed engine build for my RS Need advice for my LS6 headed engine build for my RS.
Pretty much open to all suggestions. However, the following restrictions.
1. Car has to be able to pass OBD-II computer scan for emissions.
2. Car has to be able to pass sniffer test for emissions.
3. I can switch to an emissions tune if needed IF I know the set up will pass when leaned out etc.
I have an LS1 engine and a pair of JPR Stage I ported LS6 heads w/stock valves. These JPR's are pretty impressive. No other parts purchased for this engine yet.
These heads made ~420+ with a 232/236 cam LS6 intake, Kooks, tune & bolt on's with a 4:11 geared Ford 9 inch rear. They made ~447 rwhp with a 10 bolt rear. The friend I got them from ran ~mid 11.6's.
I've been told a 230/230 cam is the way to go for an A4 with ~3200 to 3500 stall. I'm worried this cam wouldn't pass emissions or drive well on the street.
I'm thinking about some additional port work ie Stage 2 to get additional flow and aftermarket valves. I tend to lean toward a 224/224 XE-R on a 115 LSA.
I have a 224/224 XE-R on a 113 in my 99 T/A and it's the ideal nice mannered cam IMO.
At first I'll be stuck with stock 2000 manifolds maybe extrude honed for more flow.
Would a G5 or so ie 224 XE-R intake and 230 XE exhaust be a good choice?
Please advise.
Pretty much open to all suggestions. However, the following restrictions.
1. Car has to be able to pass OBD-II computer scan for emissions.
2. Car has to be able to pass sniffer test for emissions.
3. I can switch to an emissions tune if needed IF I know the set up will pass when leaned out etc.
I have an LS1 engine and a pair of JPR Stage I ported LS6 heads w/stock valves. These JPR's are pretty impressive. No other parts purchased for this engine yet.
These heads made ~420+ with a 232/236 cam LS6 intake, Kooks, tune & bolt on's with a 4:11 geared Ford 9 inch rear. They made ~447 rwhp with a 10 bolt rear. The friend I got them from ran ~mid 11.6's.
I've been told a 230/230 cam is the way to go for an A4 with ~3200 to 3500 stall. I'm worried this cam wouldn't pass emissions or drive well on the street.
I'm thinking about some additional port work ie Stage 2 to get additional flow and aftermarket valves. I tend to lean toward a 224/224 XE-R on a 115 LSA.
I have a 224/224 XE-R on a 113 in my 99 T/A and it's the ideal nice mannered cam IMO.
At first I'll be stuck with stock 2000 manifolds maybe extrude honed for more flow.
Would a G5 or so ie 224 XE-R intake and 230 XE exhaust be a good choice?
Please advise.
11-09-2003, 06:56 PM
#2
if your worried about emissions then i wouldnt go higher then a 224, i got the TR230 and i dont believe im gonna be able to pass smog with it. ls6 heads + a tr224 + bolt ons will make great power and be very streetable and should be very emissions complient. 112lsa is the lowest i'd go, any more lope and you can forget about passing.
you also might want to try a custom grind to try and get a cam better suited to your application as opposed to an off the shelf cam.
you also might want to try a custom grind to try and get a cam better suited to your application as opposed to an off the shelf cam.
11-09-2003, 07:37 PM
#6
the 227 on a 115, hmm. i'd say with a good tune its possible. alot easier then the 230/230.
i'd swap out the pump if it were me, if your doing a cam install a pump and timing chain aint much more work. i picked up my rollmaster double timing chain and ported ls6 oil pump from TSP for about 200. you could probably find it a little cheaper if you looked around hard enough.
i'd swap out the pump if it were me, if your doing a cam install a pump and timing chain aint much more work. i picked up my rollmaster double timing chain and ported ls6 oil pump from TSP for about 200. you could probably find it a little cheaper if you looked around hard enough.
11-09-2003, 07:46 PM
#7
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As for the emissions part - the plug in test is easy. With edit your car will pass without a problem. My car (a 2000 T/A) without EGR or AIR and without cats will plug in and pass. You just have to set the codes to X in Edit and it will still run the tests but not return an error.
As for the sniffer - YIKES. Kinda scary to put a cam in anything that is going to get the sniffer. A 224 could probably get close on a 114+ lsa with a "sniffer" tune. Try calling up Futral or Thunder and see what they have done with some emissions testing. Or actually - try Cartek or Speed Inc, since they are actually in areas where you have to do emissions testing.
Either way - good luck with the new project. Sounds like fun.
As for the sniffer - YIKES. Kinda scary to put a cam in anything that is going to get the sniffer. A 224 could probably get close on a 114+ lsa with a "sniffer" tune. Try calling up Futral or Thunder and see what they have done with some emissions testing. Or actually - try Cartek or Speed Inc, since they are actually in areas where you have to do emissions testing.
Either way - good luck with the new project. Sounds like fun.
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11-09-2003, 07:51 PM
#8
Originally Posted by Classic
As for the emissions part - the plug in test is easy. With edit your car will pass without a problem. My car (a 2000 T/A) without EGR or AIR and without cats will plug in and pass. You just have to set the codes to X in Edit and it will still run the tests but not return an error.
As for the sniffer - YIKES. Kinda scary to put a cam in anything that is going to get the sniffer. A 224 could probably get close on a 114+ lsa with a "sniffer" tune. Try calling up Futral or Thunder and see what they have done with some emissions testing. Or actually - try Cartek or Speed Inc, since they are actually in areas where you have to do emissions testing.
Either way - good luck with the new project. Sounds like fun.
As for the sniffer - YIKES. Kinda scary to put a cam in anything that is going to get the sniffer. A 224 could probably get close on a 114+ lsa with a "sniffer" tune. Try calling up Futral or Thunder and see what they have done with some emissions testing. Or actually - try Cartek or Speed Inc, since they are actually in areas where you have to do emissions testing.
Either way - good luck with the new project. Sounds like fun.
. i !egr/!air but still have cats. i got ls1 edit too, so you think i could pass the plug in test. you dont have a visual inspection though do you?
a couple of h/c 224 114 have passed the sniffer here in cali so he should have no problems where he's at. they even posted there read outs and had some room to spare and werent just on the edge of passing.
11-09-2003, 08:24 PM
#9
Yeah we have visual here in NC but well you know...
Friend of mine set up Volkswagen with a turbo etc and 96 ODB-II to pass the scan. The local emission guys wouldn't belive ANYONE could actually get ODB-II to work. They refused to scan the car and insisted on sniffing it. He sweated bullets because he'd planned on the OBD-II scan. The car blew clean. So where I live I have to be able to pass either/or
Friend of mine set up Volkswagen with a turbo etc and 96 ODB-II to pass the scan. The local emission guys wouldn't belive ANYONE could actually get ODB-II to work. They refused to scan the car and insisted on sniffing it. He sweated bullets because he'd planned on the OBD-II scan. The car blew clean. So where I live I have to be able to pass either/or
