My 408 build

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02-29-2008, 08:21 AM

#11

dhpro

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Nice build...great pix! U can never put too many. R/

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02-29-2008, 09:05 AM

#12

chevymanLS2

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Thanks for all the comments. Ya from what ive read, the cam i have is a pretty well all around cam for my set up. I had it on my 5.3 with the stock verter and it was a dog before 4000rpms.

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02-29-2008, 09:59 AM

#13

KySilverado

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Never to many pictures. I'd be interested in seeing all you want to take of the 4l80e and transfer case swap. That may be in my future.

Nice Build!

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02-29-2008, 06:53 PM

#14

chevymanLS2

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Ya i would,but the t-case and tranny are already in. The t-case gear swap wasn't that hard when following wilde racing's write up.

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02-29-2008, 07:26 PM

#15

xdanny510x

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Quote:

Originally Posted by chevymanLS2

I figure, since ive been asking questions about it i might tell about my 408 build:

Texas Speed unassembled 6 liter block 408 iron short block assembly
-4.030" bore
-4.00"Eagle Forged Crank
-6.125" Eagle Rods
-Diamond 15cc dished pistons
-ARP rod bolts
-Durabond cam bearings
-Clevite rod and crank bearings
-.027" gapped rings by me
-TSP 224R cam
-Cometic MLS Head Gaskets
-LS7 lifters and trays
-7.4" TSP hardened pushrods
-Scoggin Dickey ported L92's with L92 rocker arms
-Ported LS6 oil pump
-Crane double roller timing set
-L92 water pump
-NGK .050 spark plugs
-L76 manifold with stock injectors and Fast 90mm throttle body
-K&N cai
I also had to get the relocation bracket for the idler pulley. Im getting fuel to it by a walbro 255lph fuel pump and an Aeromotive A1000 fuel regulator. The rest is just being transfered over from the 5.3. I also changed to pacesetter lts, a 4l80E with a 3200 stall fuddle converter, and the t-case input shaft gear change. Anyway, sorry for talking so much, heres the pics so far:
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NIce build almost sounds like my build but mine consists of
assemebled 408 stroker 4rm texas speed
-4.030" bore
-4.00"Eagle Forged Crank
-6.125" Eagle Rods
-Diamond -4cc dished pistons
-ARP rod bolts and main studs
-Durabond cam bearings
-Clevite rod and crank bearings
-Cometic MLS Head Gaskets
-7.350" TSP hardened pushrods
-PRc ported CNC L92's with L92 rocker arms
-heads milled to 64 cc
-Ported LS6 oil pump from tsp
-double roller timing set
-L76 manifold with stock injectors
-AEM INTAKE. PACEsetter longtubes
-stainless steel valves,
-ls2 wiring harness for the TB
-PRC Double Spring Kit Complete With
Springs, Titanium Retainers, Seats, & Seals
-stock 4l60e
-Hayden tranny cooler
-NGK TR55ix
-MS4 CAMshaft
-3:73 gears
COmpression should be around 11.6:1

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03-01-2008, 11:16 AM

#16

chevymanLS2

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Wow, thats almost identical. My results will probably be less, though because of my compression and i don't know if u do, but i have 4wd

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03-01-2008, 10:54 PM

#17

chevymanLS2

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Update: Didn't take any pics unfortunately, because I was in a hurry, but I changed the fuel pump to a walbro 255 and changed the fuel sending unit that I got as a kit from GM direct parts. I replaced the sending unit due to inaccurate readings of the fuel. I decided to take the bed off, and all in all, it was a little harder than I expected, but still fairly easy. The new pump went in easy, the only modification I had to make was grind down the tab sort of spacer that brings up the feed line higher. Everything was r&r of course except for splicing the 2 wires that go to the pump. After I buttoned everything up and put the bed on, I tested it and what a difference. With the old pump, it took about 6 times of priming the system for the pressure gauge on my regulator to read 58psi. Now it goes past 60 on the first time. Also i can't tell 100%, but I think i fixed my sticky gauge. After replacing the sending unit, the gauge reads my tank having alot less fuel than it did, so obviously something changed. All I have left to do now before I try to start it is put the driveshaft in, put the tc bolts in, fab up throttle cable bracket, helicoil stripped out manifold mounting hole, tighten exhaust, and put the cai on.

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