LSX 427 question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

import_killa · 07-20-2012, 02:22 AM

I'm having a LSX 427 built and have a TVS 2300 and wondering what kinda of power "roughly" it will make. I am gonna over spin the maggie so it puts out around 18lbs of boost. I am including the build sheet so it will answer alot of questions up front. I know it's a guess on the hp numbers just wanna have a ballpark idea

I made changes I went with the billet rods and the dragonslayer crank

import_killa · 07-20-2012, 02:42 AM

I'm thinking ,mind you i dont do that to often, with the motor and extra boost I should be close to the 900-1000rwhp range

jrpxxii · 07-20-2012, 07:23 AM

Sorry but you arent going to get anywhere near this range with a maggie as its just too small of a blower and you are not going to be able to get that kind of boost out of it with the LSX427.

Unreal · 07-20-2012, 07:40 AM

LSX 427 will support plenty of power. It is just going to be limited by the power added. Maggie maybe able to make 800rwhp. Upgrade to something like a Ysi and make 1000+rwhp.

BullF-16 · 07-20-2012, 10:33 AM

I am doing the same build almost, just Mast LS7 heads, and a D1SC. I have figured it will be difficult to get 800rwhp with the D1 so i think you will also have a hard time. Good luck

Oh, and you fuel system may be cutting it close!

Hendrix-Engineering · 07-20-2012, 11:57 AM

Quote:

Originally Posted by import_killa

I'm having a LSX 427 built and have a TVS 2300 and wondering what kinda of power "roughly" it will make. I am gonna over spin the maggie so it puts out around 18lbs of boost. I am including the build sheet so it will answer alot of questions up front. I know it's a guess on the hp numbers just wanna have a ballpark idea

I made changes I went with the billet rods and the dragonslayer crank

Acording to Magnason we have the record for rwhp using a 2300,were at 850rwhp,weve switched to dual 90mm tbs and it should help take that number higher.I dont think your going to get close to you 900-1000 hopes,its tuff when you get to 750 to get much futher. Your going to get around 12lbs of boost and be in the low to mid 700s depending on dyno as well as the cam chioce and tuner.If we can help you get all you can out of the 2300 give me a call.

import_killa · 07-20-2012, 04:10 PM

Quote:

Originally Posted by jrpxxii

Sorry but you arent going to get anywhere near this range with a maggie as its just too small of a blower and you are not going to be able to get that kind of boost out of it with the LSX427.

Quote:

Originally Posted by Unreal

LSX 427 will support plenty of power. It is just going to be limited by the power added. Maggie maybe able to make 800rwhp. Upgrade to something like a Ysi and make 1000+rwhp.

Quote:

Originally Posted by BullF-16

I am doing the same build almost, just Mast LS7 heads, and a D1SC. I have figured it will be difficult to get 800rwhp with the D1 so i think you will also have a hard time. Good luck

Oh, and you fuel system may be cutting it close!

yes yall are correct I did my math wrong in my head.....its actually around 750-800rwhp i guess2mate

import_killa · 07-20-2012, 04:11 PM

Quote:

Originally Posted by Hendrix-Engineering

Acording to Magnason we have the record for rwhp using a 2300,were at 850rwhp,weve switched to dual 90mm tbs and it should help take that number higher.I dont think your going to get close to you 900-1000 hopes,its tuff when you get to 750 to get much futher. Your going to get around 12lbs of boost and be in the low to mid 700s depending on dyno as well as the cam chioce and tuner.If we can help you get all you can out of the 2300 give me a call.

was thinking on 14lbs of boost is that not a good number for maggie?

Turbo99 · 07-20-2012, 04:43 PM

Quote:

Originally Posted by import_killa

was thinking on 14lbs of boost is that not a good number for maggie?

I think the issue will be the 427 c.i. you have will be too large to make more than 12-14 psi as Thomas stated. You simply can't spin the maggie fast enough and be effective to get anymore with that size engine. You are still moving the same air as you would be on a 377 c.i. engine at 17-18 psi just the psi is lower because of less restriction from the larger 427 engine.

east TX Muscle cars · 07-20-2012, 07:47 PM

your issue is you have a 2.3 liter blower trying to fill up 427 Cubic Inches.

the 2300 just cant do that very good. 12-14 psi will be about all your going to get unless you over spin it past its RPM but then your just heating up the air and in turn going backwards actually. that 2300 is good for about 950 crank MAX so 750ish would be a good number to shoot for.

we pulled the maggie off our shop car for this exact reason and went with a YSI. Dont get me wrong the maggies are a awesome blower, i love them and sell a ton of them, BUT they have there place.

we did 750 wheel through an auto and a 9", on 12 PSI on a maggie not long ago. On a 418 CI motor. there was a TINY bit more in it boost wise but the customer didnt want to spin the maggie to hard. 21st is a good shop they will get you all they can and do it right for you!!! John is a top notch guy!

HufferSS · 07-20-2012, 07:51 PM

Quote:

Originally Posted by import_killa

I'm thinking ,mind you i dont do that to often, with the motor and extra boost I should be close to the 900-1000rwhp range

Not a chance in hell...unless of course you use a Canadian dyno.

Sorry.

07-20-2012, 02:42 AM	#2
import_killa Drives: 2SS IBM Join Date: Jan 2010 Location: fort hood texas Posts: 857 View My Garage	I'm thinking ,mind you i dont do that to often, with the motor and extra boost I should be close to the 900-1000rwhp range __________________ 1 7/8 AR headers, roto-fab CAI with radiator, fuse box, and valve cover, cam, upgraded fuel system with 85lb injectors, under drive pulley, TVS 2300 S/C, muffler delete, aftermarket wheels, AAC headlights fogs sidemarkers footwell dome and trunk lights.....That's 659.9 RWHP 611.9RWTQ T

07-20-2012, 07:23 AM	#3
jrpxxii Drives: 2010 Camaro SS/RS 427ci Join Date: Jul 2009 Location: Bowling Green, Ky Posts: 3,355	Sorry but you arent going to get anywhere near this range with a maggie as its just too small of a blower and you are not going to be able to get that kind of boost out of it with the LSX427. __________________

07-20-2012, 07:40 AM	#4
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	LSX 427 will support plenty of power. It is just going to be limited by the power added. Maggie maybe able to make 800rwhp. Upgrade to something like a Ysi and make 1000+rwhp. __________________ Nick Corvette Z06 -1200ish rwhp

07-20-2012, 10:33 AM	#5
BullF-16 USAF retired! Thank God! Drives: 2011 1SS, 1LT red,1LT/RS SGM 98Z28 Join Date: Jul 2011 Location: North Texas Posts: 2,799	I am doing the same build almost, just Mast LS7 heads, and a D1SC. I have figured it will be difficult to get 800rwhp with the D1 so i think you will also have a hard time. Good luck Oh, and you fuel system may be cutting it close! __________________ HKE LSX427(Mast blk lbl 305 6bolt LS7heads, PatG231/246 blower cam, RWHP/TQ: 1281/1133 SNL Performance Custom Twin PT6766 BB turbos 4 to 25psi selectable on the Boost Leash controller, Squash dual 400LPH/ID2000s, ALKY 4 gal meth, Autometer AFR/Bst/oilpres/oiltemp/fuelpress gauges, Pedders Justice road crs pkg: All HD bushes, supercar 12kg coil overs, supercar ZL1 sways, camber plates all setup by JusticePete! :Gforce 9" 35spline S-Trac, 1500hp Outlaw axles, 3.5"alum DS, Monster Triple disc; 4xForgeline 19x10.5 4xBridgestone 305/30R19 RE-11, CTS-v calipers/rotors/Cobalt friction XR1/3 pads

07-20-2012, 07:47 PM	#10
east TX Muscle cars Drives: 2x 05 Vettes/65'AC cobra/68 camaro Join Date: Apr 2009 Location: LONGVIEW, TEXAS Posts: 845	your issue is you have a 2.3 liter blower trying to fill up 427 Cubic Inches. the 2300 just cant do that very good. 12-14 psi will be about all your going to get unless you over spin it past its RPM but then your just heating up the air and in turn going backwards actually. that 2300 is good for about 950 crank MAX so 750ish would be a good number to shoot for. we pulled the maggie off our shop car for this exact reason and went with a YSI. Dont get me wrong the maggies are a awesome blower, i love them and sell a ton of them, BUT they have there place. we did 750 wheel through an auto and a 9", on 12 PSI on a maggie not long ago. On a 418 CI motor. there was a TINY bit more in it boost wise but the customer didnt want to spin the maggie to hard. 21st is a good shop they will get you all they can and do it right for you!!! John is a top notch guy!