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Old 08-24-2008, 01:03 AM
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Need help with a 383

i rather not get much into the truck im building as its really not considered a hot rod as much as it is a sport truck.

im starting off with a 1994 gmc sierra extended cab short bed which weighs 4500 pounds. i am adding a competion level audio system ( 23,000 watts rms all of which will total around 2400 pounds (the box alone is over 700) so its heavy as hell. then add in the weight of the air suspension. and added steel from the body drop and 12 batteries at 48 pounds apiece that's a little less than 600 pounds

any this thing is going to be really heavy.

and the 305 is not going to cut it.

i would like to build a mild 383 stroker efi backed with a good OD trans (would prefer a stick but was told by more than one person MPG will suffer)

i was told i need to build a stump puller like show here http://www.streetrodderweb.com/tech/...383/index.html

requardless whatever i do i would like 20mpg would be great but 18 would be tolerable. the stock 305 is getting 16mpg now

i have a block and will be assembly the motor myself with the help of my father

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Old 08-24-2008, 08:06 AM
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1.21 giga-watts???!!!!
 
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Your building a stroker engine, putting it in a heavy truck, and you want at least 20 mpg!? Please read your post again and get back to us on that mileage goal.
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Old 08-24-2008, 08:30 AM
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Quote:
Originally Posted by cool rockin daddy
Your building a stroker engine, putting it in a heavy truck, and you want at least 20 mpg!? Please read your post again and get back to us on that mileage goal.

I agree and will add this: Add up all the additional weight you are adding and see if a half ton will even handle it!
I think a 3/4 or one ton would be more in order. You will have close to an 8 to 9 thousand pound truck, I don't think 20mpg will ever be attainable, unless you aim all the speakers out the back for some added boost! LOL

Mark
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Old 08-24-2008, 12:38 PM
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Quote:
Originally Posted by Jmark
I agree and will add this: Add up all the additional weight you are adding and see if a half ton will even handle it!
I think a 3/4 or one ton would be more in order. You will have close to an 8 to 9 thousand pound truck, I don't think 20mpg will ever be attainable, unless you aim all the speakers out the back for some added boost! LOL

Mark
18 would be fine and the truck should be fine with the the weight. one off frame suspension etc etc.
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