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Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

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Old 03-02-2002, 12:21 AM   #1
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Join Date: May 2001
Location: Greenwood, Indiana
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Car: 1984 Trans Am
Engine: Vortec 355
Transmission: TH-700R4
Axle/Gears: GM Axles and GM 3.73

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268H cam on stock vortec heads......good or bad idea?

it says it only has 447/480 lift
and all the places i see say that you shouldnt go past 480

so am i still good.....or do you think i should find someting a little smaller so i dont have to worry?

thanks
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Old 03-02-2002, 02:39 AM   #2
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Car: 82 Berlinetta(2)/57 Bel Air
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http://www.sdpc2000.com/cart.asp?act...d=277&pid=1120

'Max. Lift: 0.450" '.

Use better springs.
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Old 03-03-2002, 03:13 PM   #3
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268h reply

the 268h is a great cam for the vortec heads look on the chevy high performance website chevyhiperformance.com and it shows how they took a 236 horsepwer gm base crate motor for 1200 dollars and put in a 268h cam and edelbrock performer rpm manifold and a holley carburator and vortec heads and got 402 horsepower out of it. But they also said the 262h would give you about the same horsepower but you would get more torque with the 262h so if it was me i would go with the smaller 262h. especially if it was a daily driver for the torque it gives you.
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Old 03-03-2002, 03:48 PM   #4
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redrott, I'm glad to see that someone understands the concept of building a street/strip car. Like you said, and every other pro engine builder (David Vizard, Johm Lingenfelter) says [b]"BE MODEST ON THE CAM YOU USE!!!"

A car that's a daily driver will most benefit from a torque motor, opposed to a HP motor. Especially if it a stick, because you HAVE to downshift to get any speed if you wanna pass someone, make a yellow light, etc. And even in a auto., the tranny will only kick down if you gun it, and then it's gas guzzlin' time.

I'm not saying that higher RPM engines don't have their place. Hell, I was 16 once. I never gave a crap about MPG, or idle quality. And I was happy as hell to floor it o have to downshift to pass someone. It was fun. But then I bought a '74 Camaro with a 406 (400 .030" over), TH400, and a 3.90 rear end. I didn't scare the daylights outta everyone within' a mile radius if I wanted to pass someone. I just left a few patches of rubber and clouds of smoke 4 the guy behind me

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Old 03-03-2002, 03:48 PM
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