motor upgrade
- Thread starter slik25
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Hey slik.
Are you going to use the same 350 or build something entirely new?
If you are going to use your same engine and modify it, the 383 makes for a nice package. If you're going for something new, bigger is always better.
ramey
Are you going to use the same 350 or build something entirely new?
If you are going to use your same engine and modify it, the 383 makes for a nice package. If you're going for something new, bigger is always better.
ramey
The 350 thats in there is a 2 bolt main, so id probably start fresh. Just asking because I had heard 400s run hot? Thought possibly big block, but dont know how much more weight that would add. Really dont know what direction to go, just explorimg options. In the end id like around 425hp
Your 2-bolt is fine for a mild/semi-wild street 383. The "400 running hot" is an occasional problem but not if your system is designed correctly. With that being said, 400 blocks are getting scarce.
good luck
ramey
good luck
ramey
Big block will be more fun if you have the money to swing it, not only for the build but then to gas mileage which will be pretty horrendous if you like to get friendly with the loud pedal. :lol:
They don't weigh THAT much more than a small block, I've never put them on a scale but an all iron SBC is supposed to weigh in around 575 pounds, and an all iron BBC should weigh in under 700 lbs 685 is what I read. Relocate the battery to the back, get a fiberglass hood, aluminum intake, aluminum water pump, and use headers instead of manifolds... I wouldn't be surprised if you didn't even have to put big block springs in it. With the battery relocated, and some lighter than stock parts I doubt if overall there would be 75 lbs more weight on the front than stock.
They don't weigh THAT much more than a small block, I've never put them on a scale but an all iron SBC is supposed to weigh in around 575 pounds, and an all iron BBC should weigh in under 700 lbs 685 is what I read. Relocate the battery to the back, get a fiberglass hood, aluminum intake, aluminum water pump, and use headers instead of manifolds... I wouldn't be surprised if you didn't even have to put big block springs in it. With the battery relocated, and some lighter than stock parts I doubt if overall there would be 75 lbs more weight on the front than stock.
Big block or LS will be the cheapest way to get 425hp. If your looking for better fuel mileage get the LS. 5.3s are dirt cheap and 400hp can be had with a cam swap and headers.
5.3's can be found for around $500 but a wiring harness can run $500 to $700 for a fuel injection harness. Its about $650 for the carb intake and ignition. They make a swap kit for them Muscle Rods made by hedman it runs about $1250 for the motor mounts trans crossmember and headers, pretty pricey. Here's the website http://www.brphotrods.com/
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You can modify the harness yourself. There is plenty of write-ups on it. The fuel system is fairly cheap and easy as well. Grab a turbo regal gas tank and throw a new walbro fuel pump in it.
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