82 350
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82 350
Quick Question:
I need to replace the 350 in my 82, and i was wondering if I can swap in any 350 motor or if i need a specific one. I intend on putting all the crossfire stuff back on the engine afterward. Thanks
I need to replace the 350 in my 82, and i was wondering if I can swap in any 350 motor or if i need a specific one. I intend on putting all the crossfire stuff back on the engine afterward. Thanks
Le Mans Master
Joined: Aug 2003
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From: Chattanooga TN
Any iron small block heads from '55 to '85 will physically bolt to that intake, also the L98 aluminum heads to '91 will fit. You have to have '68 up heads to get accessory holes. These are the non-straight center bolt style heads. Any small block block 283/327/305/307/350/400 from '55 to '99 can bolt under those heads and into the car. That is what will fit. Practically speaking you really want a crate engine with non-straight center bolt heads or something with '72-'85 heads. If you could find a good L98 TPI C4 engine, that works well with a CFI. The stock CFI intake is not really good for big cubes, so I would stay with a 327 or 350 CID engine.
Le Mans Master
Joined: Apr 2001
Posts: 5,000
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From: Minneapolis, Mn USA
I'll sell you my Crossfire motor cheap. It in excellent running condition, or at least was until last weekend. I developed a slight tick in the passenger head. It stock except has a professionally ported CFI intake and is emmisions delete.
Real cheap. Its still in the car, but will be out my XMAS. Im in 55303 zip.
Real cheap. Its still in the car, but will be out my XMAS. Im in 55303 zip.
Le Mans Master
Joined: Aug 2003
Posts: 7,720
Likes: 12
From: Chattanooga TN
Le Mans Master
Joined: Aug 2003
Posts: 7,720
Likes: 12
From: Chattanooga TN
Yes, but (1)it won't have hardened valve seats so if you dog on it you may have valve issues over time. (2) The cam is probably wrong for fuel injection. (3) You still have a 1-pc rear seal which always leak at least a little.
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Team Owner
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From: Crossville TN
'71 engines were designed for no-lead gasolines. I would like to hear from someone with first hand knowledge of a '71 (or later) engine which had damaged valve seats [but no other damaging wear in the engine].
Race Director
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I'd also like to see an engine from pre-71 Corvettes with similar damage. The need for hardened valve seats is yet another myth.
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Safety Car
Joined: Sep 2007
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From: Indy Indiana
The crate engines are just so much easier, buy what you want, put it in , sell your old one... alot less down time, guarantee, warrenty, don't have to haul your old one back and forth... perhaps even cheaper, don't have to negotiate or worry about your rebuild shop's work...all that stuff
Heel & Toe
Joined: Nov 2009
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Valve recession in earlier heads is real, but since its been over 30 years since any were made, you never see it any more as they have all had the hardened seats installed to handle the unleaded fuel. If you are going to the trouble to replace the engine, may as well look at a 383, the crossfire can handle it with a few simple mods. You can do this with your curent block, and still be a numbers matching car, you can also have the trans updated using your housing. Consider how you are going to actually drive the car, most performance upgrades don't come in to play untill at least 2000 rpm or better, and can make your low end or just off throttle performance very erratic, which can make stop and go traffic very tiresome.
Race Director
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There's tons of early C3s and C2s that have NEVER had hardened seats installed. How come they don't suffer any problems?
Heel & Toe
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You can get up to 50,000 miles on the cast seats, on unleaded, especially if the engine ran for a while on leaded fuel, some residual lubricant may linger in the system for a while. Also, if there is a slight amount of oil getting past the valve seals and rings, it will help reduce the wear, but eventually the valve will recede into the head.
Heel & Toe
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Race Director
Joined: Jul 2001
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No, I asked for examples that you, yourself have of Corvettes with valve recession due to lack of lead or with non-hardened seats. Not some marketing cr*p from some company trying to peddle more snake oil.