Gained 33 hp / 27 tq with Fast 85 and underdrive
05-02-2010, 09:02 AM
#21
Sounds exactly like what I'm planning to do. I'll pm you sometime to get more details on your setup but everyone had me thinking I needed arp headstuds/bolts.
I'm wondering about the speed density seup now.
I'm wondering about the speed density seup now.
05-02-2010, 12:58 PM
#22
Tell me about it! Last valve job I picked up from my machinist, the tool didn't even touch the valve seats on the bottom cut in at least some of every single port. I didn't bother with the 30 degree back cut, the factory valves already have one, didn't see the need to recut it.
05-02-2010, 02:19 PM
#23
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Tell me about it! Last valve job I picked up from my machinist, the tool didn't even touch the valve seats on the bottom cut in at least some of every single port. I didn't bother with the 30 degree back cut, the factory valves already have one, didn't see the need to recut it.
05-02-2010, 02:24 PM
#24
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Now I see the MONEY you spent on your setup. Makes me slow down and think about my setup even more. You don't need a big cam or spend lots of money to have a fun street car. Just the right parts.
05-02-2010, 03:05 PM
#26
A valve job is critical to making good torque and power. Too many people overlook it and buy off the shelf budget heads and a monster cam and wonder why they make 420rwhp and 370ft/lb of torque. Well, you are down on torque because you're leaking cylinder pressure through the shitty valve job, but the monster cam is shifting your power band up the rpm range to get you that 'magical' 420rwhp number.
Me personally, for a street driven manual transmission car, I'd rather have my peak torque between 3800-5000 rpm and enjoy the car than have a track only car that "runs the number" but is a dog on the street.
Me personally, for a street driven manual transmission car, I'd rather have my peak torque between 3800-5000 rpm and enjoy the car than have a track only car that "runs the number" but is a dog on the street.
05-03-2010, 03:20 AM
#28
Shhh don't tell anyone, you need big cams, ported heads and fast 90 +'s to make any power 
Must be a ton of people interested in this thread, over 500 views in 2 days. I really couldn't believe the LS6 was that restrictive on a lightly worked set of 243 heads. I almost had the heads flowed when I did them up, wonder what they actually flow, 280-285 cfm? I know Bret said he's seen a set of 243's with these same angles flow 285.
Must be a ton of people interested in this thread, over 500 views in 2 days. I really couldn't believe the LS6 was that restrictive on a lightly worked set of 243 heads. I almost had the heads flowed when I did them up, wonder what they actually flow, 280-285 cfm? I know Bret said he's seen a set of 243's with these same angles flow 285.
05-04-2010, 04:15 PM
#30
I can't wait to see what it runs when I get the midwest chassis 9" with 4.11's. 1st and 2nd gear are already worthless with the 3.42's. I hope it 60 foots pretty good with this setup and the slicks! Track opens the 28th so lets hope all my parts are in by than.
05-05-2010, 03:00 PM
#32
Ya we are even lucky to have a local track here lately, been a lot of legal issues and shady stuff going on out there for the last 20 years. If I can hit 11's around 120 mph I will be happy. We usually run in 3000-4000 DA, but I've yet to seen any other N/A LS1's break into the 11's around here. All the stockers run 14s lol.
05-06-2010, 05:05 AM
#35
Honestly, when is the last time you've seen a car make this much torque and still pull to 6800 rpm with any size cam? Now find something like this with a 224 cam? I did my research on this build, everything was well thought out, although I did it with a lot less money than most people. The one thing I did spend my money on was a professional cam / valvetrain setup, which actually didn't cost much more than off the shelf setups. Wonder what kind of power I could make if I ported the heads and ran his bigger cam? 
05-06-2010, 08:40 PM
#36
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Honestly, when is the last time you've seen a car make this much torque and still pull to 6800 rpm with any size cam? Now find something like this with a 224 cam? I did my research on this build, everything was well thought out, although I did it with a lot less money than most people. The one thing I did spend my money on was a professional cam / valvetrain setup, which actually didn't cost much more than off the shelf setups. Wonder what kind of power I could make if I ported the heads and ran his bigger cam?
05-07-2010, 08:10 PM
#38
I have no idea what it's worth to pull the maf, lot of guys say it's not a restriction on a 346. I do know it's cheaper to spend $30 on a silicone connector and 2 stainless clamps than it is to buy a bigger maf 
Pulling the MAF was just part of the combination of the induction package. If I had to guess, it was probably worth 3-5 rwhp on my setup but who knows, also running a fram paper air filter. It's a shame alot of these budget cnc ported heads that flow 300 + cfm don't deliver real results like a set of heads I have $450 invested in. Highway robbery, I feel bad for most people who have been taken, they honestly were too naive to know any better.
Pulling the MAF was just part of the combination of the induction package. If I had to guess, it was probably worth 3-5 rwhp on my setup but who knows, also running a fram paper air filter. It's a shame alot of these budget cnc ported heads that flow 300 + cfm don't deliver real results like a set of heads I have $450 invested in. Highway robbery, I feel bad for most people who have been taken, they honestly were too naive to know any better. 
05-08-2010, 06:14 AM
#40
I have no idea what it's worth to pull the maf, lot of guys say it's not a restriction on a 346. I do know it's cheaper to spend $30 on a silicone connector and 2 stainless clamps than it is to buy a bigger maf Pulling the MAF was just part of the combination of the induction package. If I had to guess, it was probably worth 3-5 rwhp on my setup but who knows, also running a fram paper air filter. It's a shame alot of these budget cnc ported heads that flow 300 + cfm don't deliver real results like a set of heads I have $450 invested in. Highway robbery, I feel bad for most people who have been taken, they honestly were too naive to know any better.
Pulling the MAF was just part of the combination of the induction package. If I had to guess, it was probably worth 3-5 rwhp on my setup but who knows, also running a fram paper air filter. It's a shame alot of these budget cnc ported heads that flow 300 + cfm don't deliver real results like a set of heads I have $450 invested in. Highway robbery, I feel bad for most people who have been taken, they honestly were too naive to know any better.i have 600 invested in them , they are now on my lq4 and never dyno tuned it. All street tune so i dont know how they will dyno. May have to talk to Geoff at EPS and go throw it on the dyno for ***** and giggles.
I know the lq4 raised the mph from 120 in full street trim to 122 in full street trim with out dyno tuneing .