--- product_id: 38049545 title: ".550\" Lift Z28 RV Valve Springs Set for CHevrolet SBC 400 350 327 307 305 283 Engines" brand: "enginetech" price: "¥24280" currency: JPY in_stock: true category: "Enginetech" url: https://www.desertcart.jp/products/38049545-550-lift-z28-rv-valve-springs-set-for-chevrolet-sbc store_origin: JP region: Japan --- # 1.260" outside diameter .550" max camshaft lift 318 lbs open spring pressure .550" Lift Z28 RV Valve Springs Set for CHevrolet SBC 400 350 327 307 305 283 Engines **Brand:** enginetech **Price:** ¥24280 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your Chevy’s heart with precision power springs! ## Quick Answers - **What is this?** .550" Lift Z28 RV Valve Springs Set for CHevrolet SBC 400 350 327 307 305 283 Engines by enginetech - **How much does it cost?** ¥24280 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/38049545-550-lift-z28-rv-valve-springs-set-for-chevrolet-sbc) ## Best For - enginetech enthusiasts ## Why This Product - Trusted enginetech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Spring Pressure:** Delivers 318 lbs of open spring pressure at 1.210", providing superior valve control under demanding conditions. - • **Optimized Lift Capacity:** Supports camshaft lifts up to .550", ideal for mild camshaft upgrades without compromising reliability. - • **Trusted Quality & High Ratings:** Backed by Enginetech’s reputation and a stellar 4.7-star rating from 172 enthusiasts, making it a go-to choice for performance and dependability. - • **Durable Single Spring with Damper:** Engineered with a single spring and integrated damper for enhanced stability and reduced valve float during towing or RV use. - • **Precision Fit for Classic Chevy SBC Engines:** Designed to perfectly match small block Chevy engines from 1955-1993, ensuring seamless integration and peak performance. ## Overview The .550" Lift Z28 RV Valve Springs Set by Enginetech is engineered for small block Chevy engines (1955-1993), offering a perfect balance of lift capacity and spring pressure. With a 1.260" outside diameter and 318 lbs open pressure, these springs ensure reliable valve control for towing, RV, and mild camshaft applications, backed by high customer satisfaction and proven durability. ## Description Outside Diameter: 1.260" Inside Diameter: 0.785" Closed: 114 lbs. @ 1.710" Open: 318 lbs. @1.210" Coil Bind @: 1.160" Spring Type: Single with damper -fits small block chevy engines from 1955-1993. Good for towing, rv, and mild camshaft applications with lifts up to .550". ## Features - outside dia.: 1.260" - inside dia.: .785" - .550" max camshaft lift ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01NBEZIAZ | | Best Sellers Rank | #385,532 in Automotive ( See Top 100 in Automotive ) #43 in Automotive Replacement Engine Valve Springs | | Brand | Enginetech | | Customer Reviews | 4.7 4.7 out of 5 stars (172) | | Date First Available | November 30, 2016 | | Item Weight | 3.23 pounds | | Item model number | ERV-943 | | Manufacturer | enginetech | | Manufacturer Part Number | ERV-943 | | Package Dimensions | 10.67 x 5.83 x 2.28 inches | ## Images ![.550" Lift Z28 RV Valve Springs Set for CHevrolet SBC 400 350 327 307 305 283 Engines - Image 1](https://m.media-amazon.com/images/I/615OKxoIvFL.jpg) ## Questions & Answers **Q: Just ordered to help out my rv camshaft, can i re use stock retainers/shims or do i need to upgrade those too?** A: The answer depends on the age of the engine. The shims are reusable if you cannot see grooves cut into them. The retainers are probably fine but the little keepers should be replaced at a minimum. An inexpensive part that if fails it will destroy your engine and a fun weekend out. Also consider the low cost of replacing the parts that you have asked about. This of course is a great time to replace valve seals too. And, Roller tip rockers will almost completely eliminate valve guide ware. **Q: Are these the same size and specs as the gm ls1 springs? Doing a hotcam swap in my 95 5.7 block and looking for springs for my 193 tbi heads with lift** A: No I never ordered **Q: Will these work on 87-95 gm tbi 350 heads 193 cast number?** A: Yeah I have a 93 Chevy Silverado 5.7 tbi **Q: will these valve springs work with a stage 3 cam** A: As long as you not exceeding the max lift of the spring. ## Frequently Bought Together - .550" Lift Z28 RV Valve Springs Set for CHevrolet SBC 400 350 327 307 305 283 Engines - SSI SBC BBC SBF FKM Positive Valve Stem Seals - 11/32 X .500 - Set of 16 - NEW - FEL-PRO SS 5112 Valve Stem Seal Set --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/38049545-550-lift-z28-rv-valve-springs-set-for-chevrolet-sbc](https://www.desertcart.jp/products/38049545-550-lift-z28-rv-valve-springs-set-for-chevrolet-sbc) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-30*