Need Help With My 74 350! Plz Reply

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Old February 3rd, 2010 | 09:39 PM
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Need Help With My 74 350! Plz Reply

I have a 1974 Olds Cutlass, and i pull the original enigne and put in a 1972 350 with about 450 horses, but now i want to build a Turbo or blower build.

I would like to know like what sort of heads are the best or what needs to be done with the block and name brands to build it with.
Old February 4th, 2010 | 05:11 AM
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You can do it with the stock heads if you want. A good bottom end is the key, good pistons, rods and at the very least main studs. Also depends on your hp goal.

Last edited by cutlassefi; February 4th, 2010 at 06:39 AM.
Old February 4th, 2010 | 06:55 AM
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Are you not happy with the performance of the "450 horse" 350?
What do you plan on doing with the car, what are your goals?
Old February 4th, 2010 | 10:12 AM
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Yea the car is great but now im looking for that extra punch. With the boost set up im looking for at least 650hp with a small turbo or supercharger set up. and thanks for the help
Old February 4th, 2010 | 08:54 PM
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Tell us more about the engine. What have you done to it. What parts are in it.
Old February 4th, 2010 | 10:25 PM
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I know it has Forged internals but cast crank, (i belive it has a 500 lift cam) never took it apart to tell its what i was told. Also has edelbrock intake, with a 750 holley double pump. it has the 7a heads with a port job and all new rocker arms and etc. i bought the engine though a friend of mine. his buddy needed the money, so i only payed 500 bucks with the stand and Hooker Comp Headers, and all pulleys and power steering pump. Even the air cleaner! His friend had it in a 84 cutlass drag car. He said that it should have about 400 to the crank.
Old February 5th, 2010 | 09:52 PM
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Sounds like you got a pretty good deal on the engine. Around 400 doesn't sound real sure about the hp. Did he tell you any details of the engine. Ok what kind of gears do you have.
Old February 5th, 2010 | 10:07 PM
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he bought the car and never even dropped the pan. he est. around 400. it does have 11.5 cp to. im new to the olds business so please tell me what u think it has. i have the original 10 bolt 8.5 and 2.73s. im trying to get a posi unit out of a TA and using 3.53s gears.
Old February 6th, 2010 | 01:33 PM
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Changing the gears will help a lot. Adding a stall conv. would really help. As far as 11.5:1? with out seeing what it looks like apart I couldn't tell you for sure. I would think your cam and intake wouldn't be the best choice for that much compression. They would work better for an engine around 9.5:1.
Old February 6th, 2010 | 04:08 PM
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i have a TCI th-350, with a B&M 3000 stall.
Old February 7th, 2010 | 08:18 AM
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1st off, do the gears. With no overdrive, staying conservative is good with a 3.42 or so gear.

Does this thing rattle on premium pump gasoline, no matter what?

Not sure of those numbers, but it sounds like you got a great deal on it.

I imagine you have around a 10:1 engine, but that should still rattle on pump gas. Check your cranking compression, also. If you have a fresh mill, I'd think you should have around 180-190 cranking. That (depending on the cam) will still not be an 11.5 engine, but way too much for the blower engine.

If you change the gears, and do some inexpensive tuning, I am sure that you would have a very scary ride, before the expense of the blower comes to play.
JMO
Jim
Old February 7th, 2010 | 12:19 PM
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thanks jim. he told me 93 and i have gotten bad gas once and it started to spark knock. but it runs good and no rattles. i now i have to run low cp on a boosted enigne. i was wondering how low. like 8.2-1 or 9-1.
Old February 7th, 2010 | 01:03 PM
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Originally Posted by 1974 Cutlass
thanks jim. he told me 93 and i have gotten bad gas once and it started to spark knock. but it runs good and no rattles. i now i have to run low cp on a boosted enigne. i was wondering how low. like 8.2-1 or 9-1.
depends on how you're generating the boost. If you use something like a Procharger you can get away with at least 9.5:1 cuz they don't heat the air as much as others do.
Old March 1st, 2010 | 10:46 AM
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i took a bone stock 1972 350 and put 2 turbos on it and it held 2 gather for 7 mo of whipin mustangs tire fryin fun finely the piston let go. the 2 turbos where of a dodge k car fun fun fun
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