V8 bolt on help desk! Now available!! - Page 478 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

litle88 · 10-17-2013, 03:55 PM

The headers are the bottleneck. Think about it, you squeezing air down, and expelling thru manifolds as opposed to 1 7/8 headers. I say another 25/35+ hp

Nightmare2012 · 10-17-2013, 04:34 PM

I'd say 20-25 hp

Firefighter · 10-17-2013, 04:44 PM

When the backpressure is reduced by headers doesn't the boost drop a little bit? Time for a smaller pulley?

grocerygetter · 10-17-2013, 04:47 PM

smaller pulley proves nothing. But yeah I have that if needed. I'm doing this on just 93. I have no cats as is so already saw the boost drop there. 11psi or less on 93 is probably fair game. I'm seeing 10.6 right now.

Firefighter · 10-17-2013, 05:48 PM

Wasn't trying to say anything other than boost might drop and a smaller pulley maybe needed to regain it and then 1+1= a bunch more power.

Sent from my DROID RAZR HD using Tapatalk

thahemp · 10-17-2013, 06:21 PM

Yeah. I'm basing my guess on you already having the cats out. I think you'll gain more tq than hp. Both will be small.

Muddflap · 10-17-2013, 06:28 PM

I guess I'll throw my guess in too... I'm gonna say 10-15hp max

BlaqWhole · 10-17-2013, 06:35 PM

Are we guessing how much extra power will be made on a forced induction engine going from stock manifolds to 1-7/8th headers without cats?! Are we talking tune also? I'd say closer to 40.

thahemp · 10-17-2013, 11:40 PM

Alright friend. Let's discuss why one would expect the same 40 hp gain from a supercharged car.

thahemp · 10-17-2013, 11:44 PM

We would have to agree on where the power comes from on a stock-to-headers swap. Cats right?

Muddflap · 10-18-2013, 07:36 AM

I'm sticking with the 10-15 hp max and I'm leaning more towards 10 than I am 15.
I got 5 on it.....

thahemp · 10-18-2013, 08:52 AM

Quote:

Originally Posted by Muddflap

I'm sticking with the 10-15 hp max and I'm leaning more towards 10 than I am 15.
I got 5 on it.....

Yeah.. Maybe Blaq didn't realize he already has his cats removed.

Camarojt · 10-18-2013, 08:59 AM

I'd guess about 15hp.

Birm · 10-18-2013, 09:04 AM

20-24whp is my guess...With nothing else changed but the manifolds.

10-17-2013, 03:55 PM	#6679
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	The headers are the bottleneck. Think about it, you squeezing air down, and expelling thru manifolds as opposed to 1 7/8 headers. I say another 25/35+ hp __________________ 2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.

10-17-2013, 04:47 PM	#6682
grocerygetter instigator Drives: 2020 6.2 Trail Boss, 2022 XC90 Join Date: Jan 2010 Location: 72034 Posts: 3,979 View My Garage	smaller pulley proves nothing. But yeah I have that if needed. I'm doing this on just 93. I have no cats as is so already saw the boost drop there. 11psi or less on 93 is probably fair game. I'm seeing 10.6 right now. __________________ -John S.

10-17-2013, 05:48 PM	#6683
Firefighter Drives: Black '13 2SS/RS/1LE w/NPP/NAV Join Date: Oct 2012 Location: Tampa by way of Miami... Posts: 4,934	Wasn't trying to say anything other than boost might drop and a smaller pulley maybe needed to regain it and then 1+1= a bunch more power. Sent from my DROID RAZR HD using Tapatalk __________________ My Build Thread... http://www.camaro5.com/forums/showthread.php?t=285054

10-17-2013, 06:21 PM	#6684
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	Yeah. I'm basing my guess on you already having the cats out. I think you'll gain more tq than hp. Both will be small. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

10-17-2013, 06:28 PM	#6685
Muddflap Drives: 2010 Camaro SS Join Date: Apr 2013 Location: Longview, Tx Posts: 797	I guess I'll throw my guess in too... I'm gonna say 10-15hp max __________________ TSP 1 7/8 LT, ADM Race Cold Air w/ Race Scoop, GPI SS3 LS3 Cam, Powerbond UD, 3.91 Gears, GPI Posi Mod. 498RWHP/451RWTQ

10-17-2013, 04:34 PM	#6680
Nightmare2012 come find out;) Drives: stockish 2012 camaro ss Join Date: Oct 2012 Location: speed county Posts: 2,166 View My Garage	I'd say 20-25 hp

10-17-2013, 04:44 PM	#6681
Firefighter Drives: Black '13 2SS/RS/1LE w/NPP/NAV Join Date: Oct 2012 Location: Tampa by way of Miami... Posts: 4,934	When the backpressure is reduced by headers doesn't the boost drop a little bit? Time for a smaller pulley?

10-17-2013, 06:35 PM	#6686
BlaqWhole Account Suspended Drives: 2017 Camaro ZL1 A10 Join Date: May 2012 Location: NJ Posts: 7,692	Are we guessing how much extra power will be made on a forced induction engine going from stock manifolds to 1-7/8th headers without cats?! Are we talking tune also? I'd say closer to 40.

10-17-2013, 11:40 PM	#6687
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	Alright friend. Let's discuss why one would expect the same 40 hp gain from a supercharged car. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

10-17-2013, 11:44 PM	#6688
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	We would have to agree on where the power comes from on a stock-to-headers swap. Cats right? __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

10-18-2013, 07:36 AM	#6689
Muddflap Drives: 2010 Camaro SS Join Date: Apr 2013 Location: Longview, Tx Posts: 797	I'm sticking with the 10-15 hp max and I'm leaning more towards 10 than I am 15. I got 5 on it..... __________________ TSP 1 7/8 LT, ADM Race Cold Air w/ Race Scoop, GPI SS3 LS3 Cam, Powerbond UD, 3.91 Gears, GPI Posi Mod. 498RWHP/451RWTQ

10-18-2013, 08:59 AM	#6691
Camarojt Drives: 2011camaro SS Join Date: Nov 2012 Location: Allen, Tx Posts: 2,202	I'd guess about 15hp.

10-18-2013, 09:04 AM	#6692
Birm Drives: Florida Speed & Power Join Date: Jan 2011 Location: Pinellas Park, FL Posts: 3,185	20-24whp is my guess...With nothing else changed but the manifolds.