SpE3dF0x

I've discussed this idea with Durango Boy(DB) and I think VORTEC is going to be the way for this. Can someone give in detail(down to cam specs-and what cam to pick). I got vortec intake numbers as well as some part numbers. Also I would like to keep my Qjet(heard nothing about great things about them)manifold of choice? Any ideas?

MotorHead

350block 30 over.
Stock crank, stock rods, SpeedPro Flat top pistons 10:1 CR
Sportsman II heads.
RPM Air Gap intake
Holley 750 DP
CompCams 282S cam

300 RWHP and 330RWT can't beat that for an inexpensive 350ci street motor

Silver00V6Camaro

I have the yearone roller motor built by derebery performace in texas. Its a 355 dynoed at 425hp @ 5800 and 438ftlb of tq @ 3800 at the crank.

Spec
350 bored .30 = 355
Hydrollic Roller Cam 218/228 @ .050 .520 lift basic LT4 Hot Cam
Performace Products RPM Air Gap Style Intake
Ported Vortec Heads with 2.02 1.6 valves and 1.6 rockers
9.5:1 comp ratio
Holley 4160 750 dual feed carb vaccum secondaries

Specs taken from YearOne's site
Engine Specifications:
·Horsepower: 400+
·Torque: 400+ ft/lbs
·Compression ratio: 9.5:1
·Dyno-tested: Yes, includes balancer and 14" flexplate
·Dyno sheet: Included with engine's output
·Vacuum produced: 12hg @ 800RPM
·Recommended fuel: 92 octane
·Max recommended RPM- 6000
·Block: Seasoned 4-bolt iron
·Crankshaft: Nodular iron
·Pistons: Hypereutectic
·Connecting rods: Powdered metal
·Camshaft- Hydraulic roller
·Valve lift:.520"
·Duration @ .050" (int/exh): 218deg/228deg
·Rocker arms: Stamped steel 1.6:1 ratio
·Cylinder heads: Ported Vortec
·Valves: Stainless steel 2.02 int/1.60 exh
·Valve springs: Heavy duty
·Bore x Stroke: 4.030" x 3.48"
·Intake manifold: Dual-plane aluminum
·Oil pan, timing cover, valve covers included
·Engine fasteners: High tensile strength
·Warranty: 12 month/12,000 m

And it was only about 3200 bucks shipped

Eldogg

I have a Vortec headed 355, speed pro small dish (about 9.5 c/r) w/ the GM performance Hot Cam. I love it. Makes plenty of vac. sounds good and runs like a mad man. I highly recomend using a late model block (ie 1pc rear seal & oe hyd roller)

Durango_Boy

That's exactly what we did for Curt's '74 except we used flat top pistons for a static CR of 9.75:1 and a rather aggressive cam. We won't get it to the dyno for a month or so but we're expecting great numbers based on the way it pulls the car. It started as a 1997 Tahoe engine, bored to 355, and built strong. The factory roller engines are a great starting place because they are almost exactly the same casting as Gen1 blocks so everything transfers over except maybe the temp sending unit, oil pan, and intake.

Fevre

GM Hot Cams are nice cheap cams for a motor that will be mostly street, makes great mid range hp and torq. Running it in my Formula with Trick Flow Twisted Wedge heads; think I am in the 375 hp and 400 tq range with the restrictions of the 1.5 rockers, 24 lbs inj's, stock tb and Edlebrock headers. With the 700r4 and 3.73 gear the tires are no match for the loud peddle from a dead stop.

Durango_Boy

Is the one you have a roller cam?

I actually have an LT4-Hot Cam here for sale, it's a roller cam though and won't work with flat tappet lifters. It's never been used. Was installed, but the engine was never fire before it was stripped down and rebuilt with different parts.

Quil

http://www.popularhotrodding.com/eng...ine/index.html

Popular Hot Rodding did a Vortec build up that is a pretty good read...

Sky65

Sort it however you like.

Eng Combos.xls

Fevre

Yes it is a hyd roller

Acid 67

@ Silver00V6Camaro

where did you set your timing?
i got the same motor and i am trying different advance curves and timings,but i dont know which one i should run.