My build....421CI

**98TransAmWs-6** · 10-25-2013, 07:22 PM

Well here is my build, 421 ci Lq9. The starred items are items I already have, feel free to let me know if you feel there is something missing from my build that I may need. The goal is max power NA.

Engine:
*4.030 bore Iron Block
*DSS 4.030" -5 cc flat top pistons
*Total Seal CR Classic Race Piston Rings
*Dura-Bond High Perfomrance Cam Bearings
*Clevite H-Series Rod Bearings CB663HN Standard Size
*King Racing Main Engine Bearings for LS1 & LS2 Engines
*K1 6.125" stroker rods
*K1 4.125" crank
*ARP main cap studs
*TFS 6 bolt 255 LS3 Heads
*ARP head studs
*Tick Performance Custom Cam, Cam Motion 8620 Core
*C5r timing chain
*LS2 Timing Chain Dampener
*Hex-A-Just Timing Set
*Melling High Volume Oil pump (blue printed and ported)
*TFS spring kit w/titanium retainers
*Morel 5206 Link bar lifters
*Tick Performance Chromoly Pushrods 7.725" length 3/8" thick
*LS3 Rocker Arms w/ comp cams upgrade
*GM ls3/ls9 head gasket
*Stroker Windage Tray
*7 quart racing oil pan
*On block Oil filter adapter

Induction:
TSP 2" x 3.5" LT headers
Custom work to turn out the fenders
*FAST 102 LS3 intake
*NW 102 TB
*Speed Density (4" smooth bellows)
*FTP 104 lid

Fuel system:
*Walboro 450 lph fuel pump
*95# Deatschwerks injectors

Brakes:
*CTS-V brembos
*R1 Concept rotors and Hawk HP+ pads
*SS brake lines

Drivetrain:
Hawks Third Gen 8.8 rear w/3.73 gears
Carbon Fiber or Chromoly driveshaft (haven't decided what company)
*Precision Industries Vigilante 4000 stall
*Built 4l60e

Suspension:
*Bilstein shocks
*Vogtland lowering spring
*UMI Double adjustable PHB rotojoints
*UMI LCA rotojoints
*UMI LCA relocation brackets
*UMI PHB relocation kit
*UMI 3 pt SFCs
Strano hollow sway bars
*UMI Adjustable A-arms rod ends
*UMI Road Race k-member
*UMI Solid motor mounts
*Poly transmission mount

Tires:
*BFGOODRICH KDW 275 35 18 front
*BFGOODRICH KDW 335 30 18 rear

Wheels:
*Ace Alloy Slick 18x9.5/18x11 (+53 offset)

***SMWS6TA*** · 10-25-2013, 09:33 PM

subscribed

**DaytonaBlues** · 10-26-2013, 03:40 AM

hope your good with setting up valvetrains...pushrods?? screw in rocker studs? adjustable roller rockers?...im told thats the hard part of a good built, that and getting the damn thing tuned. oh yea, im assuming there isnt a 10 bolt in this car. lol kablooey...

**cpop98ws6** · 10-26-2013, 08:19 AM

Valve train is easy, once you lean the basics your golden.

**98TransAmWs-6** · 10-26-2013, 09:31 AM

I have pushrods but for a different build so I'll need to check length to see if I need a different size or not. I also forgot to put in there BTR trunion upgrade. I have a 10 bolt currently but I will be getting a strange s60.

**DaytonaBlues** · 10-26-2013, 12:50 PM

that motor is gonna blow the tires off at the hit..hope you got some good D/R's..sure wish I could build that thing. 500 horse on the button. are you just 1/4 mile just cause the auto tranny with this..

**98TransAmWs-6** · 10-26-2013, 01:09 PM

I am researching tires to use and am going to get my ws6 wheels widened in the rear to 12" for 315s. Drag and road race will be the uses but mostly road racing. I will be upgrading to a manual or 4l80e at some point.

***SMWS6TA*** · 10-26-2013, 08:27 PM

Go 4L80E, as much fun as manuals are, the auto's are killing at the tracks....

**98TransAmWs-6** · 10-26-2013, 08:37 PM

Originally Posted by SMWS6TA

Go 4L80E, as much fun as manuals are, the auto's are killing at the tracks....

That was what I was thinking but I'll do that much further down the road.

**98TransAmWs-6** · 10-30-2013, 11:17 AM

Next on my order list will be 95# injectors, trunion upgrade, and btr lifters as well as a racetronix fuel pump.

For a trans rebuild kit how much power would you say for my build it would need to hold 550 or 700hp? I am thinking 700hp which would give breathing room but maybe not.

***SMWS6TA*** · 11-01-2013, 06:40 AM

If you can afford it go with the higher, you never know when you might want to add power adders like Nitrous or Force Induction

**98TransAmWs-6** · 11-01-2013, 07:18 AM

Originally Posted by SMWS6TA

If you can afford it go with the higher, you never know when you might want to add power adders like Nitrous or Force Induction

At the moment I can't afford either but come tax refund time I will be able to afford the 700 HP kit. Hopefully I will be able to get my Strange S60 rearend as well at that time. I know I won't ever do nitrous but at some point I may do a supercharger.

**35th-ANV-SS** · 11-02-2013, 07:43 AM

So you're upgrading your current trans just to get rid of it soon for a better auto trans or a manual? Or, is this like years down the road? Just wondering as anything you put into it will likely be a lost investment when going to sell.

**98TransAmWs-6** · 11-02-2013, 07:54 AM

Originally Posted by 35th-ANV-SS

So you're upgrading your current trans just to get rid of it soon for a better auto trans or a manual? Or, is this like years down the road? Just wondering as anything you put into it will likely be a lost investment when going to sell.

I don't know when I'll do the swap but at the same token I would rather not have my trans blow up from the stroker. Right now I am just trying to plan. I wish I could fit a 4l80e or manual swap in but that isn't possible atm. Now if my trans would survive stock I could save and do the swap sooner but I doubt that.

The swap would likely be a few years from now.

**35th-ANV-SS** · 11-02-2013, 08:05 AM

I wonder if anyone on here is running a stock transmission with that kind of power. Would be nice to see someone chime in with real life experience on this. I would also vote for an auto transmission in lieu of a manual one. I love my manual, but it's tough being consistent with it when racing.

**98TransAmWs-6** · 11-02-2013, 09:23 AM

Originally Posted by 35th-ANV-SS

I wonder if anyone on here is running a stock transmission with that kind of power. Would be nice to see someone chime in with real life experience on this. I would also vote for an auto transmission in lieu of a manual one. I love my manual, but it's tough being consistent with it when racing.

I am curious as well and I think I am going to go with a 4l80e and I may just see how long the trans lasts with the power I am looking at or since I may be able to do a 4l80e swap instead of a 4l60e performance rebuild. From my research all that is needed is:

4l80e
Driveshaft for 4l80e
Standalone harness for the 4l80e
Crossmember for 4l80e
Torque arm relocation kit

I want to say when I was looking at it it came over just over $1000 depending on the price of the 4l80e. I would be using a used 4l80e.

**kingls1** · 11-02-2013, 09:28 AM

Subscribed

**35th-ANV-SS** · 11-02-2013, 09:32 AM

Have you been looking for used ones already? If so, are they easy to find? Just curious.

**98TransAmWs-6** · 11-02-2013, 10:53 AM

Originally Posted by 35th-ANV-SS

Have you been looking for used ones already? If so, are they easy to find? Just curious.

Yes I have and they are reasonably easy to find on ebay. I have found them from $350 on up.

**98TransAmWs-6** · 11-03-2013, 02:11 PM

I have actually decided to switch the internals to K1 technologies stuff (new rod length of 6.125) and using a 4.125 crank to make this a 395 build. I want to use wiseco pistons but I can't seem to find a piston for a 3.905 bore, 4.125 crank, 6.125 rod, and is a flat top between -2.8 and -3.1cc. Without the valve relief my compression is going to be 12.4 which I believe is a little high for pump gas. I can find a wiseco piston just like I need but it is +4cc.