You can get a rebuilt LT1 from Jasper Engines for about $2,800.
He told me that they phase them out at 300k if there is a major problem and let them go to 500k if there isn’t and most go to 500k with no major mechanical issues .
Chevy LT1 Engine Reliability
Overall the LT1 is a very reliable engine. The OptiSpark manifold issue is really the only issue that is pretty much guaranteed to occur on this engine. Head gaskets are generally good as long as the engine is not overheated.
It really depends on how broken your engine is. Rebuilding with stock parts will probably cost you around $2,000 to $3,000 if you’re buying a rebuilt LS1 or LS2 around $3,500 and a new LS1 long block crate engine will cost you just over $4,000.
The stock LT1 fuel system is good for about 600rpm, much beyond that and you need to upgrade the fuel system and the stock ZL1 fuel pump doesn’t get you much further. If you spend the money you might as well put in a new cam, heads, forged pistons, etc.
Using 110-octane race fuel, our 383 achieved an incredible 735 horsepower and 693 foot-pounds of torque!
History. Chevrolet introduced the 350 cu in (5.7 L) LT-1 in 1970 and made it available in both the Corvette and Camaro. It was an optional engine in the Corvette and available and as part of the high performance ZR-1 option. Only 53 ZRs were produced between 1970 and 1972, making it one of the rarest Corvettes.
General Motors produced three different engines called LT1: 1970-1972 LT-1 – Chevrolet Generation I Small-Block. 1992–1997 LT1 – GM Generation II small block. 2013 – (Current) LT1 – GM Generation V Small-Block.
The LT blocks are more robust in design than the LS thanks to their gusseted water jackets. This is one reason why the LT aluminum block can take up to 900hp and the L8T iron block should be safe in the 1,200hp range.
LT1 tuning kits. The OBDI LT1 tuning kits are complete packages with everything you need to tune your 1994/1995 LT1 car. They allow you to read the calibration information currently stored in the vehicle’s computer, view and edit that information as needed, and then program the vehicle’s computer with the modified calibration.
A conversion for repair is usually cheaper than buying a new motor. An overhaul can save you up to half the cost of a new engine. However, sometimes rebuilding is not a good option. In cases where the rebuild costs the same as a new engine, your mechanic should state these costs up front.
Conclusion. A 5.3 Vortec engine is an excellent engine with many options for conversion. You will spend the least money if you source your own parts and do the rebuild yourself, but even if you hire a professional mechanic to do the job you will most likely still save a lot of money.
Cost to Rebuild or Replace an Engine
In general, you can expect the cost of rebuilding your engine to be between $2,500 and $4,500 depending on the parts, as well as Work. If you are capable and skilled, rebuilding your own engine will obviously run on the underside.
Answer: The ’96 Camaro 5.7L LT1 is rated 275 hp at 5,000 rpm and 325 lb-ft of torque at 2,000 rpm. The cheapest way to get to 450hp from there is to add 85hp or so with some bolt-ons and a cam swap and then get another 100hp with a mild nitrous kit.
The LT1 can handle up to about 700rpm reliably, but there have been cases before and after where the ring gaps caused problems.
LS1 motors are lighter than LT1 motors. LS1 motors have better heat dissipation than LT1 motors. LS1 engines produce more power than LT1 engines. LS1 engines are distributorless systems while LT1 engines are not.