Possible new engine combo? - F-Body Online

Ar0ck · 05-17-2007, 08:46 PM

Just wanted to throw this out and see what you guys thought of it?

http://www.ellweinengines.com/Ellwei...Components.htm

Quote:

Kit #EE355, The Forged piston/rod 355-LT1 Rebuild Kit $1190
2 kits in stock.

The kit is designed for you to build your own 355LT1 utilizing your stock GM 350 crank. The kit features premium forged Mahle pistons/rings/pins/locks, SCAT 4340 forged I-beam rods with 7/16" rod bolts, Mahle/GM main and rod bearings, full LT1 Rebuild gasket Kit as shown above, (minus the stock Mahle rings)

Have your machine shop bore and plateau hone your stock block to 4.030, align hone the mains, square deck the block to 9.010", install cam bearings and oil galley and core plugs. Also have your balance shop balance your stock crank for the SCAT rods and Mahle power pack.

The -5cc flat top Mahle piston would give about 11.8:1 static compression ratio if using a 54cc chamber head with .029" B-body head gasket and piston in the hole 0.010". If the cylinder head combustion chamber is 58cc then static compression ratio would be 11.2:1 .

The 355 kit features the following parts.
Mahle piston "PowerPak" #SBC250030F05 (3.48 stroke, 6.000" rod, 4.030 bore)
The Mahle PowerPak features graphal coated forged flat top pistons, 1.5mm, 1.5mm, 3.0mm plasma moly file fit rings, F-1 style round wire locks and piston pins.
SCAT 6.000" 4340 forged I-beam rods with 7/16" cap screw style rod bolts #2ICR-6000-7/16
[+ $280 for USA Howard's Forged Sport rods #SP6000]
Mahle main and rod bearings
GM/Cloyes oversized stock crank timing sprocket
GM/Cloyes stock timing chain
Victor Reinz or GM B-body head gasket, (.026" or .029" compressed thickness respectively)
Head bolt kit
Felpro printoseal intake manifold gasket set
All other gaskets to complete engine rebuild

With my current ported heads, intake & cam:

Ported by Jason Short in NY. they were completely broken down by my machine shop. They flowed right around 255cfm at .500 lift. Chambers are 54cc's, valve springs are comp 977's with Ti retainers and locks ARP studs and Comp 4084 guide plates. Before they were put back together the valves were lapped and seats cleaned up. I don't know what the installed height of the springs are off hand. I belive they were set up at 1.800 so they should be good for .600 lift. I'm using Mr. Gasket .026" gaskets. The intake was also ported by Jason Short. Nothing real fancy just a basic port job on the runners and the TB was opened up to 58MM. Finally the cam is a Comp Cams "306" LT1 Camshaft, 230 / 244, .510 / .540 112 LSA

With these top end mods:

-Comp Magnum 1.52RR
-Comp .0072 Chromemoly Push-Rods
-Stock Lifters
-Comp 977 spring
-Comp Ti +.050 retainers/seats/locks
-ARP 7/16 studs
-Racetronix 255lbhr Fuel Pump & Hot-Wire kit
-Lunati Double Roller Timing Chain
-GMPP EGR Block-Off plates
-Enlarged Throttle Body Opening (sized for 58mm throttle body)
-Stock ported Throttle Body
-Meizer Electric Water Pump
-!AIR/EGR
-Throttle Body ByPass

All I would need now is a different oil pan & a good oil pump.

Questions or Comments?

Phate · 05-17-2007, 09:28 PM

That looks like a nice setup... the only thing that I dont like is balancing your stock crank.

I never reuse a crank. Ever. Every time I did a spun a rod bearing i'd put a new crank in it. Then this last time I ended up going with a billet crank.

JPack · 05-17-2007, 09:50 PM

I agree. I would look at Callies for a crank. Might as well do it right. The rest looks good though.

19Stroked89 · 05-18-2007, 04:24 AM

I agree with what has been said. Looks like a great setup but definently get a new crank!!

FirebirdPhil · 05-19-2007, 10:23 AM

As all those above me has said very nice set up but go with a new crank.