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Old 10-11-2006, 03:01 PM
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whats the best way to go?

dont know if this been asked already (dont care either) but i just joined this site and want to whats the best i can do with an 86 mc LS.Need to know whats the best engine to go with either sbc,or bbc.but dont give nothing over a 540 bbc.want to know the good and the bad of yall choice,keep in mind I looking for something that can produce some serious power,so give me some bbc's thats running or if even possible some sbc's.trying to get ride of my stock 305 already lowerd 3:73 ratio.

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Old 10-11-2006, 04:30 PM
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How much power you can make depends on how much money you can spend. I am in the process of building a pump gas (91 octane) big block 496 with a ported set of stock heads that should be around 600 hp and 600 ft lbs. If you took that same motor and changed the cam/intake/and heads, you would be looking at another $3000 but you could bump that up to the 700 hp-750hp range. As far as small blocks go, you can have anything from a relatively mild 383 that will still make ~400hp to a more radical 434 that will make 650 hp, still on pump gas. Between those two, you are probably looking at a $8000 difference.

Here is my combo

496 9.5:1 compression
248 254 @.050 ~600 lift solid flat tappet cam
Fully ported oval port 049 heads
port matched victor jr intake
Holley hp 950 carb
hooker comp 2 1/8th inch headers

this should be around 600hp/600 ft lbs, but it may be a little choppy at idle for a daily driver, it would also not get very good mileage. If mileage is a big concern at all, go small block. Below is another combination that a friend of mine built that is a little better suited for a daily driver

461 9.5:1 comp
242 248 @.050 .600 lift hydraulic roller cam
cleaned up oval port 781 heads (same as 049)
port matched victor jr

made 560 hp 560 tq

Last one, this is a 355 that I had in a daily driven nova it got 17 miles per gallon on the interstate with overdrive, and had pretty good power (around 375 hp)

355 9.9:1
vortec heads
comp xe268h cam (224 230 @.050 .477 .480 lift)
performer RPM intake
hooker comp 1 5/8th inch headers

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Old 10-11-2006, 04:50 PM
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A lot of people on the Monte SS site have dropped in larger horse power small or big blocks in their cars.

They advise, dump the original 305 and slap in a 350 or better.

A few weeks ago we saw a really nice '87/88 SS Monte at a cruise-in for sale with a big block under the hood. It was so tempting to buy the car.
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