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862 upgrade? So the plan was to do a 5.3 swap in my 67 camaro , all I was going to do was put a cam in and run it! Well I found water in a couple of cylinders, so I installed new flat top Pistons , a TSP 220r cam . I cannot find 243 or 799 heads and when I do they want big money right now! My question is it worth putting money into the 862 and having a 2 inch valve installed ? Or should I just run them ? Would I really gain that much ? |
You should have NO trouble finding 243/799 heads as they come on nearly all Gen IV 5.3L truck engines, which are filling wrecking yards as we speak.... What year is the 5.3 you have? |
It’s a 2003! |
When you go into a wrecking yard, look for 2007-up trucks w/5.3 engines. Most if not all heads on those trucks are 799/243. They should not be that expensive, as common as they are. |
Those 862's will perform very close to the 799/243 heads if they are completely worked over |
There’s been testing done where the stock 862’s actually outperformed the 799/243 heads on a 5.3L. |
Originally Posted by KCS
(Post 19898776)
There’s been testing done where the stock 862’s actually outperformed the 799/243 heads on a 5.3L. |
Look for Bobby Stipkovic of Steel City Auto in Pittsburgh. He has a set of 799/243 heads cleaned and assembled for about $500. |
Keep the stock 862 heads, they are better than the 243s in what your doing. |
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