The best TBI 350 rebuild kit depends on whether you need a complete engine overhaul or only sealing parts. For a 1993–1995 GM 350 5.7L TBI truck or SUV, the two LowPricedAutoParts master kits include core engine components; one specifies upgraded moly/chrome rings. The PartsFlow kit is a gasket-only option for a broader 1987–1995 5.7L TBI range, while the 1704 kit is for the throttle body, not the full engine. The Torque RV kit is a camshaft option for compatible TBI 305 and 350 engines.
| Product | Best suited for | What it includes |
|---|---|---|
| LowPricedAutoParts premium-ring master kit | 1993–1995 stock-size rebuilds seeking upgraded rings | Pistons, bearings, cam, lifters, gaskets, oil pump, and more |
| LowPricedAutoParts standard master kit | 1993–1995 stock-size rebuilds | Core engine rebuild components |
| PartsFlow full engine gasket set | Gasket replacement for 1987–1995 5.7L TBI | Engine gasket set and valve stem seals |
| 1704 TBI gasket kit | Throttle-body resealing | TBI gasket components |
| Torque RV Ultimate Cam Kit | Low-RPM torque-focused cam upgrade | Hydraulic flat-tappet cam kit |
LowPricedAutoParts Premium-Ring Master Kit
Best for: A 1993–1995 Chevrolet or GM 350 5.7L TBI truck or SUV that needs a broad engine rebuild with stock-size parts. The kit lists flat-top cast pistons and upgraded moly/chrome rings for street or stock applications.
Included components are rod, main, and cam bearings; a full gasket set; stock camshaft; hydraulic lifters; timing set; oil pump with a 3/4-inch hole; and expansion plugs. Its standard-size pistons and bearings are intended for stock bore and journal dimensions.
Why it was selected: It combines many core rebuild parts in one package and specifies premium rings. Limitation: Standard-size parts are not a fit for an engine that requires oversize pistons or undersize bearings after measurement or machining. Verify the VIN and engine code before ordering.
LowPricedAutoParts Standard Master Kit
Best for: Owners rebuilding a 1993–1995 GM 350 5.7L TBI truck or SUV who want a standard-size master kit without the specific premium-ring upgrade described in the other kit. Listed parts include flat-top cast pistons and rings, rod, main, and cam bearings, a full gasket set, stock camshaft, hydraulic lifters, timing set, oil pump, and expansion plug kit.
Why it was selected: Its broad parts list suits a full rebuild when the engine’s stock dimensions remain usable. It is listed for a flat-tappet cam application.
Limitation: The pistons and bearings are standard size, so this kit may not suit an engine that needs machining or non-stock dimensions. Confirm engine code and measure the block and journals before choosing parts.
PartsFlow TBI Full Engine Gasket Set
Best for: A gasket replacement or partial engine repair on a GM, Chevrolet, or GMC 5.7L 350 TBI V8 listed for 1987–1995. The product references part numbers 260-1269, KS2666, and T598122.
The set includes molded-rubber valve-cover and oil-pan gaskets, along with premium valve stem seals. Its stated fit range is broader than the 1993–1995 master rebuild kits, making it an option to investigate when the vehicle’s year falls within the listed range.
Why it was selected: It addresses buyers who need engine sealing parts rather than pistons, bearings, or rotating components. Limitation: Exhaust pipe packing and exhaust valve stem seals are not included. Check the required gasket contents for the specific job.
1704 TBI Throttle-Body Gasket Kit
Best for: A buyer resealing a compatible Rochester 220 TBI unit, not rebuilding the entire 350 engine. The listing references part numbers 219-607, 19238102, and 18023, and describes fitment across various GM TBI applications, including some 5.7L 350 V8 vehicles.
Why it was selected: TBI service may be part of a larger engine project, and this kit covers a separate throttle-body repair need. The listing notes that cleaning the aluminum throttle-body surface is an important preparation step.
Limitation: This is not a master engine rebuild kit and does not provide pistons, bearings, or internal engine components. Verify the throttle-body application before purchase.
Torque RV Ultimate TBI Cam Kit
Best for: A compatible Chevy or GMC TBI 305 or 350 build where the goal is low-RPM torque, pulling, or off-road use. The listing describes a computer-compatible hydraulic flat-tappet cam kit with a smooth idle and advertised valve lift of .420/.443 inches.
Why it was selected: It offers a cam-focused alternative for builders considering a change from a stock cam. The listed advertised duration is 278/288 degrees.
Limitation: This is not a complete rebuild kit. Confirm the cam’s suitability for the specific engine, computer setup, and intended build before selecting it.
Buying Guide: How To Choose A TBI 350 Rebuild Kit
Do you need a master kit or only gaskets?
Choose a master kit when the rebuild calls for internal components such as pistons, bearings, a camshaft, lifters, and timing parts. Choose an engine gasket set for sealing work when the existing internal parts are being retained. A TBI throttle-body gasket kit serves a separate repair and should not be mistaken for an engine overhaul package.
Are standard-size parts right for your engine?
Both LowPricedAutoParts master kits list standard-size pistons and bearings for stock bore and journal dimensions. That does not establish that an older engine remains within those dimensions. Have the block and crankshaft inspected and measured; select oversize or undersize components only when the required measurements and machining specifications are known.
How should you confirm fitment?
Check the vehicle year, engine code, VIN, and TBI application against the kit details. Do not rely on “350” or “5.7L” alone, because the listed master kits specify 1993–1995 truck and SUV applications, while the PartsFlow gasket set lists a broader 1987–1995 range.
When should you consider a different cam?
Choose a cam kit only when its stated flat-tappet design, lift, duration, and computer compatibility suit the engine and build plan. A cam upgrade is a separate decision from choosing a piston-and-bearing rebuild kit.
Frequently Asked Questions
What parts are in a TBI 350 master rebuild kit?
The listed master kits include pistons and rings, bearings, gaskets, a camshaft, hydraulic lifters, timing components, an oil pump, and expansion plugs. Contents differ by kit, so check the itemized listing.
Does a TBI gasket kit rebuild the engine?
No. A gasket kit replaces specified seals and gaskets. It does not include the internal engine parts needed for a complete rebuild.
Can I use standard-size pistons in any 350 engine?
No. Standard-size pistons are intended for stock bore dimensions. Measure the engine and confirm its condition before ordering.
Is the 1704 kit a complete 350 rebuild kit?
No. It is described as a TBI gasket kit for throttle-body service, not a complete engine rebuild package.
What should I verify before buying?
Confirm the engine year and code, TBI application, bore and journal measurements, required gasket contents, and whether the build uses a flat-tappet cam.