1992 introduced a new version of the 4.3 L (262 cu in), the L35. This version of the 4.3 L (262 cu in) was equipped with CPI (Central Port Fuel Injection). This system had one centrally-located fuel injector to distribute fuel to six hoses each with a poppet valve to each of the intake ports.

Jul 1, 2007 · Learn about GM's CPI and CSFI fuel injection systems, their functioning, issues, and replacement procedures.

Nov 22, 2006 · VIN W, RPO L35: Central Port Injection (CPI/CMPI). Manufactured from 1992-1995. It has central injection assembly mounted in the intake manifold which uses a single batch-fired injector feeding 6 poppet nozzels located at the intake ports.

Oct 30, 2008 · The CPI and CSFI systems are both very sensitive to any loss of fuel pressure. If the fuel pump is weak, is not getting enough voltage to run at normal speed, or the fuel supply line is restricted because of a clogged fuel filter, a drop of only a few psi can be enough to create a hard-start or no-start condition.

Oct 23, 2023 · Edit: Evidently those L35's were rated at 200hp versus the 155 or 160 that the original 4.3 was rated for. If it's more complete than the pictures suggest, it might be worth the effort. The compression ratio IS higher than your original engine, and it supposedly has a more aggressive cam, so bear that in mind.

Apr 30, 2008 · The central-port injected L35 (Vin 'W') debuted in 1992 (where the cylinder block was modified - with the incorporation of a balance shaft), with better breathing for 200 hp (150 kW). Another CPI engine, the LF6 , joined the rest in 1996, while the LB4 was retired after 1998.

Apr 2, 2015 · 1992 introduced a new version of the 4.3L, the L35. This version of the 4.3L was equipped with CPI (Central Port Fuel Injection). This system had one centrally located fuel injector to distribute fuel to six hoses each with a poppet valve to each of the intake ports.

Nov 22, 2013 · SCPI (L35): 170HP and 235 ft lbs (1996) / 180 or 190 depending on 2WD vs 4WD and 245 or 250 ft lbs. (97' to 02') MPFI (LU3): 190HP and 250ft lbs (02' to 05' in the S-Series) But yeah, all of these are bloated factory numbers.

Jun 5, 2024 · The LU3/CPI cam is very similar to a F/Y-car LT1 cam. The CPI heads roughly equal Vortecs. The CPI engines actually made more HP and TQ than the 96+ Vortec engines that replaced them.

Dec 4, 2014 · Engine 4 298 ccm (262 cui), 6-cylinder, Furcate, 12-valves, L35 CPI. 1994 Astro I 4.3 (262 cui) v6 Fuel gasoline. 4-speed Automatic transmission.