Hello all! I have a 1989 Iroc-z with a 350 tpi. Was wanting to know what people would think about replacing it with this http://www.yearone.com/serverfiles/f...DK73488&trk=12. I know I will have to replace the intake with a vortec style intake if i stay with the TPI system!

I dont think the cam would get along with the tpi very well.

That's the LT4 hot cam. SDPC uses it in their Vortec TPI replacement engine.

That's a great motor for your car. The cam is just an LT4 hot cam. It will be a real screamer. If you went with the Holleystrealthram vortec intake it would really move out.
http://store.summitracing.com/partde...5&autoview=sku


http://www.yearone.com/serverfiles/f...DK73488&trk=12

CT350PC1

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 mth/12,000 mi