Another dyno estimate thread =)
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TECH Resident
iTrader: (7)
Joined: Dec 2004
Posts: 850
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From: Arlington, Texas
Another dyno estimate thread =) I'm building a 408 for my truck, it should be finished and installed in February. The
Parts going in:
Gm iron block, 4.030 bore
ARP main studs, ARP head bolts, ARP misc bolts
ls7 lifters(the 100$ ones from SDPC)
Eagle H beam rods
Mahle Pistons, -12cc dish
Cometic head gaskets
317 cast heads hand ported
Dual springs(PRC)
ms3 cam(I know, a baby cam)
4" stroke Eagle forged crank
Clevitte bearings
Stock truck intake manifold
8.1L truck injectors
Think that covers the engine parts
Bolt ons:
Pacesetter LT headers
No cats
E-cutout
S&B air intake
misc, standard bolt ons
With that said, the truck is an 04 silverado, 2wd, 4l60E(upgrading before motor going in), 3500RPM stall, 3.42 gears.
The compression ratio should be 10.25:1
Any estimates on the 1/4mi(truck weighs 5000lb) would be nice too, but more interested in dyno#'s for now. I'll find the 1/4 times this spring after the motors broken in and I get my new gears installed.
Thanks a bunch guys.. I'm anxious to actually get this thing finished and put on the track and dyno.
Thanks!
Lurius
Parts going in:
Gm iron block, 4.030 bore
ARP main studs, ARP head bolts, ARP misc bolts
ls7 lifters(the 100$ ones from SDPC)
Eagle H beam rods
Mahle Pistons, -12cc dish
Cometic head gaskets
317 cast heads hand ported
Dual springs(PRC)
ms3 cam(I know, a baby cam)
4" stroke Eagle forged crank
Clevitte bearings
Stock truck intake manifold
8.1L truck injectors
Think that covers the engine parts
Bolt ons:
Pacesetter LT headers
No cats
E-cutout
S&B air intake
misc, standard bolt ons
With that said, the truck is an 04 silverado, 2wd, 4l60E(upgrading before motor going in), 3500RPM stall, 3.42 gears.
The compression ratio should be 10.25:1
Any estimates on the 1/4mi(truck weighs 5000lb) would be nice too, but more interested in dyno#'s for now. I'll find the 1/4 times this spring after the motors broken in and I get my new gears installed.
Thanks a bunch guys.. I'm anxious to actually get this thing finished and put on the track and dyno.
Thanks!
Lurius
Originally Posted by Lurius
That would indeed make me happy!
-Lurius
-Lurius
The reason I put 450rwhp & 490 rwtq is I'm guessing the truck intake is going to make a little more torque and a little less HP...
Originally Posted by stone4779
450ish rwhp 490 rwtq
Im gonna agree with this due also to the cam being soo "small" for your engine. it should be a pretty docile cam that builds GREAT torque in my opinion. similar to a 224/228 in a 346ci engine. should fit your build perfectly. however Id put in bigger gears to get that big *** truck moving better.
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Thread Starter
TECH Resident
iTrader: (7)
Joined: Dec 2004
Posts: 850
Likes: 0
From: Arlington, Texas
Originally Posted by Irocss85
however Id put in bigger gears to get that big *** truck moving better.
-Lurius
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i will be very interested in these results as im building the same motor with a fast 90, n.w.90, and not sure which cam. all for my 3200lb 73 firebird. just need cam help. thanx joel