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My very own build thread!! 434CID Mamo top end

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Old Mar 18, 2021 | 10:04 AM
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Default My very own build thread!! 434CID Mamo top end

I have decided to get a motor for my 99 Trans Am, instead of buying a different car. I couldn't find anything that I really wanted that wouldn't make me live paycheck to paycheck, and my wife told me that she didn’t think that I would be as happy as I would be if I just got the motor for the TA. So... for the first time in the 17 yrs that I have been on LS1Tech.... I get to do a build thread!! You have no idea how excited I am!!!

This will be a daily driver. I will drive this car to work every day that I am in town, most of that is stop light to stop light. 90% of the time the car will be under 4500 RPMs. I might go to the drag strip a couple of times per year, and that is the only time that the motor will see 7K.



The set up will be using Flex-Fuel (E54) and a Flex-Fuel sensor to knock timing down when I am forced to run 91 octane.

Race Engine Development will be machining the block, installing Darton sleeves, and installing billet main caps.

Katech will be installing their piston oil squirters.

Mamo Motorsports top end and recommended rotating assembly parts.

Probably going to install the motor myself, with the help of a friend that has done a few of these. Hopefully we can knock out the roll-bar and mini-tub at the same time.


BLOCK

Block – 12571048 - Done.

R.E.D sleeving, prepping, tapping for LS1 knock sensors, and installing Billet Speedworks main caps - DONE

Katech Piston Squirters - Done



ROTATING ASSEMBLY

Pistons – CP Carillo custom with notch for oil squirter. similar to Gen V pistons- RECEIVED

Piston Rings – included with pistons - RECEIVED

Wrist Pin – included with pistons - RECEIVED

Connecting Rods – 6.125” Molnar PWR ADR - RECEIVED

Rod bolts – Molnar spec ARP 2000 included with rods

Rod bearings – King

Crankshaft and main bolts – Molnar 4” stroke - RECEIVED

Main bearings – King



HEADS/CAM/INTAKE

MMS 265 LS7 heads - RECEIVED

Yella Terra Rockers - RECEIVED

YT valve cover gasket - RECEIVED

MMS MSD Intake - RECEIVED

Valve cover bolts - ORDERED FROM SUMMIT

Valve covers –

Intake manifold bolts – ARP - RECEIVED

Pushrods – Manton length based on engine assembly - ORDERED FROM MAMO MOTORSPORTS. Will be shipped after measurements during the engine build)

Lifters – link bar - axle oiling - RECEIVED

Head bolts – ARP - RECEIVED

head gaskets – ORDERED FROM MAMO MOTORSPORTS. (Will be shipped after measurements during engine build)

Crank Damper – ATI Aluminum shell, steel hub - RECEIVED

Cam – 237 / 249 116 + 4 - RECEIVED

Cam bolt – ARP - RECEIVED



ENGINE ASSEMBLY

Valley Cover and bolts – GM LS3 - RECEIVED

Crank sensor – LS1 - RECEIVED

Engine Coolant Sensor – LS1 - RECEIVED

Oil Pressure Sender – LS1 - RECEIVED

Cam bearings – Dura Bond

Block plugs – ICT Billet

LS coolant crossover - Improved Racing

Crank Scraper/windage tray – Improved Racing - RECEIVED

Oil Pump – MMS Ported LSA - RECEIVED

Oil pan bolts - ORDERED FROM SUMMIT

Oil pan – Holley - RECEIVED

Oil dip stick – F-Body - RECEIVED

Oil dip stick tube – F-Body - RECEIVED

Oil pickup tube – F-Body - RECEIVED

Rear cover bolts – ARP - RECEIVED

Crank bolt – ARP - RECEIVED

Timing kit – CLOYES Z Series - RECEIVED

Timing Cover - RECEIVED

Cam Sensor - RECEIVED

Timing Cover gasket - RECEIVED

Timing cover bolts - ORDERED FROM SUMMIT

Ohio Generator 370 amp Altalternator - RECEIVED

Oil cooler with fan - Improved Racing Setrab 20 row Series 9 with dual fans, 180 degree thermostat, and 200 degree temp switch for the fans - RECEIVED

Radiator - Dewitts 32-1139027M - probably ordering from Summit

Yella Terra valve cover gaskets - RECEIVED


ENGINE INSTALLATION

Motor mount bolts – ARP - RECEIVED

knock sensors – LS1 - RECEIVED

Knock Sensor/Cam sensor adaptor wire - ORDERED FROM SUMMIT

MAP Sensor – Stock LS1 - RECEIVED

MAP Sensor extension - will be part of custom wire harness

Kooks 2” primary LS1 headers - Oval Flange - RECEIVED

Zycoat coating on the headers - RECEIVED

Kooks 3” over the axle system with cats. - RECEIVED

Header Gasket - PART OF HEADER FROM KOOKS

Header bolts – Stage8 - RECEIVED

UMI K-Member - RECEIVED

UMI panhard bar relocation kit - RECEIVED

Remanufactured 411 ECM - RECEIVED

New, customized, ECM wiring harness (EV6 injector plugs, Gen IV coil plugs, LS7 MAF plug, longer MAP sensor cable, longer Cam Position Sensor cable) - Current Performance Wiring RECEIVED


FUEL SYSTEM

CHRS1313 dual Walbro 450 - no switch - -8AN feed/return stock evap - RECEIVED

Holley 12-846 Fuel regulator - RECEIVED

MagnaFuel 7010 25 micron stainless filter - RECEIVED

Tony's recommended injectors - RECEIVED

Racetronix PTFE kevlar hose, -8 feed and return. -6 from regulator to fuel rail.

PTFE fittings - -6 to EFI, -6 male, -8 male, and -8 male angled. Probably ordering from Summit.


Derale 15800 Fuel cooler -8 AN. Probably ordering from Summit.



DRIVETRAIN

Clutch - Summit SUM-700901 - RECEIVED

I already have a TDP stage 3 Viper T56

I already have a Dana 60 with 4.10s

Wheels - OE Wheels Corvette Wheel C7 ZR1 18 front, 19 back. Both 56mm offset

Wheel shortening/widening: Rears widened to 12.5 and fronts reduced to 9 by Weldcraft



Other:

Corbeau A4 seats with lumbar, anti-submarine, and recline. Black cloth - SUMMIT
- RECEIVED

XS Power D7500 battery to mount in the spare tire slot

1/0 power wire pre-terminated x2 - GP Car Audio

1/0 ground wire pre-terminated x2 - GP Car Audio

Power Distribution block

Battery cut off switch


I think that is everything... let me know if I forgot anything.

Last edited by FCar2000TA; Nov 24, 2024 at 04:48 PM.
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Mar 19, 2021, 07:09 AM
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Originally Posted by rkupon1
Lotsa cool wives around here lately. I like it...
You have to pick your battles in life carefully. My wife worked at the concessions at a local short track where I raced before I met her. She spilled a drink in the late Dave Allison’s lap one night when he was visiting. True story.
Got home from work late one evening years ago, and my wife wasn’t in the house. I went out to the shop and found her under my race car, finishing up some rivets on some new interior sheet metal, to help me get the car ready for a race. True story.
She’s ok...
Old Mar 18, 2021 | 10:28 AM
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Long time coming, congrats on the build!
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Old Mar 18, 2021 | 10:51 AM
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Sounds like a plan. I have a Diamond stage 3 on the shelf with new pressure plate assembly. Lightweight billet flywheel. Very lightly used. PM me if interested.
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Old Mar 18, 2021 | 11:02 AM
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Originally Posted by ddnspider
Long time coming, congrats on the build!
no doubt!! Thanks for your knowledge over the last couple of years.
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Old Mar 18, 2021 | 11:04 AM
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Originally Posted by Che70velle
Sounds like a plan. I have a Diamond stage 3 on the shelf with new pressure plate assembly. Lightweight billet flywheel. Very lightly used. PM me if interested.
I would rather just go with a new one. Besides, I am likely 6 months away from getting the clutch.
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Old Mar 18, 2021 | 11:19 AM
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I'm in for the results.
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Old Mar 18, 2021 | 11:38 AM
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Originally Posted by Jimbo1367
I'm in for the results.
it will be a while. Heads have a 3 - 3.5 month lead time.
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Old Mar 18, 2021 | 11:48 AM
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What is the compression ratio and power level you are shooting for?

Overall budget including labor?

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Old Mar 18, 2021 | 12:05 PM
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Originally Posted by BCNUL8R
What is the compression ratio and power level you are shooting for?

Overall budget including labor?
Not sure on compression yet. I have to be able to run 91 octane in a pinch, but the flex-fuel sensor will tell the ECM to adjust timing for it. Not sure how much compression I can get away with. I will be going with whatever Tony recommends.

I would be happy with around 600 RWHP through my Dana 60.

I hope to keep the budget under $25k. That is for the longblock, headers, and fuel system.

Last edited by FCar2000TA; Mar 18, 2021 at 12:14 PM.
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Old Mar 18, 2021 | 12:17 PM
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Originally Posted by FCar2000TA
Not sure on compression yet. I have to be able to run 91 octane in a pinch, but the flex-fuel sensor will tell the ECM to adjust timing for it. Not sure how much compression I can get away with. I will be going with whatever Tony recommends.

I would be happy with around 600 RWHP through my Dana 60.

I hope to keep the budget under $25k. That is for the longblock, headers, and fuel system.
I know there is a lot more to it than static compression, but for reference I ran 11.4 to 1 on a 408 back in 2006 on 91 pump. It was only 485 rwhp through an auto though. I’d love to have over 600 NA.
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Old Mar 18, 2021 | 12:22 PM
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Tony is the man, I’m sure you’ll love the way it runs.
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Old Mar 18, 2021 | 12:22 PM
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Forgot to include the fuel system.
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Old Mar 18, 2021 | 12:52 PM
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Originally Posted by BCNUL8R
I know there is a lot more to it than static compression, but for reference I ran 11.4 to 1 on a 408 back in 2006 on 91 pump. It was only 485 rwhp through an auto though. I’d love to have over 600 NA.
Tony said that 11.25:1 would be safe, but I forgot to tell him that I will have a flex-fuel sensor and tune. The Wiseco pistons that I'd like to run say 11.9:1 with 70cc chambers.

I will still have to be able to break the motor in, and go to the dyno for the tune, so I'm probably going to have to ensure that I keep the tank full of Flex-Fuel. I will probably also keep a half gallon of denatured alcohol in the car, in case I am forced to use 91 octane.
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Old Mar 18, 2021 | 01:06 PM
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Originally Posted by FCar2000TA
Tony said that 11.25:1 would be safe, but I forgot to tell him that I will have a flex-fuel sensor and tune. The Wiseco pistons that I'd like to run say 11.9:1 with 70cc chambers.

I will still have to be able to break the motor in, and go to the dyno for the tune, so I'm probably going to have to ensure that I keep the tank full of Flex-Fuel. I will probably also keep a half gallon of denatured alcohol in the car, in case I am forced to use 91 octane.
Id make sure he knows every detail about your plan and goals so you are both on the same page.
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Old Mar 18, 2021 | 01:19 PM
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Originally Posted by BCNUL8R
Id make sure he knows every detail about your plan and goals so you are both on the same page.
I fully intend to!
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Old Mar 18, 2021 | 02:07 PM
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I figure the best route is to install the fuel system now, that way I can immediately pour in flex-fuel when the motor gets installed.

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Old Mar 18, 2021 | 02:13 PM
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Questions...

Will I even need dual Walbro 450 fuel pumps?

Last edited by FCar2000TA; Mar 18, 2021 at 02:36 PM.
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Old Mar 18, 2021 | 02:52 PM
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A single Walbro 525lph Hellcat pump should be fine!
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Old Mar 18, 2021 | 03:45 PM
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On the block ask Steve since it is NA to see what he thinks about drilling bay-to-bay crankcase breathing holes in the mains as the 5.3 does not have the "windows' that the other LS blocks have. This is less of an issue on a forced induction set up. I think he (Steve) said drilling the holes was good for 10-20 hp.
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Old Mar 18, 2021 | 03:55 PM
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Originally Posted by FCar2000TA
Questions...

Will I even need dual Walbro 450 fuel pumps?
I have the exact engine setup your looking at and one 450 is plenty. That’s what I’m running.
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