Dyno'd the TA today, expected more HP
noise is coming from springs(commin among gold springs i have read) ...stock push rod size is 7.400 and manley hardened is the preferred rod..someone here has to know mill specs to push rod size. try a post in the internal area for that issue
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Originally Posted by 8GTOKLR
noise is coming from springs(commin among gold springs i have read) ...stock push rod size is 7.400 and manley hardened is the preferred rod..someone here has to know mill specs to push rod size. try a post in the internal area for that issue
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back on the point of me not putting down as much power as expected, could it have to do with the fact that i have a stock MAF? Does a H/C engine need a bigger MAF like the SLP 85mm?
Originally Posted by White95TA
back on the point of me not putting down as much power as expected, could it have to do with the fact that i have a stock MAF? Does a H/C engine need a bigger MAF like the SLP 85mm?
No your stock MAF is capable of handling up to 550 rwhp. No need to waste money on something you don't need.
Did you see if you were getting any knock on any of the runs. 98's are known to have bad knock sensors.
Never heard of manley
Originally Posted by 8GTOKLR
noise is coming from springs(commin among gold springs i have read) ...stock push rod size is 7.400 and manley hardened is the preferred rod..someone here has to know mill specs to push rod size. try a post in the internal area for that issue
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Originally Posted by JakeY2KZ
No your stock MAF is capable of handling up to 550 rwhp. No need to waste money on something you don't need.
Did you see if you were getting any knock on any of the runs. 98's are known to have bad knock sensors.
Did you see if you were getting any knock on any of the runs. 98's are known to have bad knock sensors.
Originally Posted by TryingT/A
I think he meant "mainly" not manley. Although hardened pushrods are very manley
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I doubt the cats are costing you very much HP. We did testing at FLP and on most H/C cars they usually only cost you between 5 and 7 hp. The cats FLP headers used were Catco cats.
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Originally Posted by Krazy98Z28
your probably getting the famous 4 degrees of false knock from the knock sensors...Do you know if the knock sensors are turned off???
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you might be missing some power but its not alot. 1 every motor and car makes different power. 2 your cam is small. i dont expect you to be running a 25x 25x cam but you can run a much larger cam than what you have. my car was low on numbers compared to comprable setups but not everyone is going to make the top numbers.
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i think what might be causing some problems is the pushrods. The heads were milled and thin gaskets were used to raise compression so i'm 99% sure i need some 7.350 pushrods. Cause stock ones are in there now.
Last edited by White95TA; Apr 8, 2006 at 02:16 PM.
Originally Posted by silver01z06
you might be missing some power but its not alot. 1 every motor and car makes different power. 2 your cam is small. i dont expect you to be running a 25x 25x cam but you can run a much larger cam than what you have. my car was low on numbers compared to comprable setups but not everyone is going to make the top numbers.
The size of his cam has nothing to do with his #'s. The 224R cam is plenty big for over 400 rwhp with heads and all his bolt on's.
Originally Posted by White95TA
i think what might be causing it is the pushrods. The heads were milled and thin gaskets were used to raise compression so i'm 99% sure i need some 7.350 pushrods. Cause stock ones are in there now.
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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.
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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
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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Originally Posted by Patrick G
If you're down on power and your tune is good (0 knock and good A/F ratio), then you need to look at your parts. Do not change to shorter pushrods, you will only make your valvetrain louder. The pushrods and cats are not the reasons why you're down on power. Nobody has wanted to say it, but I suspect your heads are to blame. Patriot heads, especially the older ones, are known to be soft on power...usually down 10-20 rwhp over the better ones out there. With properly ported heads, you should be in the 400-410 range with your current mods, cats and cam. Sure you can tweak your setup for some incremental increases, but the big gains are going to come from better heads or bigger cubes, plain and simple. Sorry for being honest.
Last edited by White95TA; Apr 8, 2006 at 02:36 PM.
Not sure what the problem is but you are making me feel better. I have a 98 with similar mods but with hand ported heads and a set of non-catted homemade true duals. I was on the same dyno 2 weeks ago and made exactly 400 through a 3800 stall and 12bolt. I too was expecting more too but dynos don't race down the track. 
Mine is way lean and getting 4deg knock. Not sure if its real or not but i'm taking it easy untill I get some fuel to it.
Is yours a new combo or has it been together for quite a while? My motor started out together in another car and even though it seemed to run good was only making 365 RWHP. I bought it that way and had no real knowledge of what was in it other than what the previous owner told me. I pulled it apart for inspection and turned out to be completely trashed. The block is the only thing I was able to save and it had to be cleaned up to .010
This was a motor susposably built by a local popular shop with only 10,000 miles on it. My machine shop found several mistakes in the shortblock.
If I were you I would see if someone you know has an set of duals that will fit you headers and see if you can borrow them for a few pulls. If you still don't pick up any you might want to pull it all apart just to see whats going on in there.
Good Luck,
Richard
Mine is way lean and getting 4deg knock. Not sure if its real or not but i'm taking it easy untill I get some fuel to it.Is yours a new combo or has it been together for quite a while? My motor started out together in another car and even though it seemed to run good was only making 365 RWHP. I bought it that way and had no real knowledge of what was in it other than what the previous owner told me. I pulled it apart for inspection and turned out to be completely trashed. The block is the only thing I was able to save and it had to be cleaned up to .010
This was a motor susposably built by a local popular shop with only 10,000 miles on it. My machine shop found several mistakes in the shortblock.
If I were you I would see if someone you know has an set of duals that will fit you headers and see if you can borrow them for a few pulls. If you still don't pick up any you might want to pull it all apart just to see whats going on in there.
Good Luck,
Richard