4.9l V8 Sfi Ohv 16v
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HT4100 4.1, 4.5, 4.9 Discussion, 4.9l V8 Sfi Ohv 16v in Cadillac Engine Technical Discussion; Thinkin bout buyin another eldo 1993 (white diamond) with a 4.9L V8 SFI OHV 16V . whats the scoop on ...
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    Walt is offline Cadillac Owners Member
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    Smile 4.9l V8 Sfi Ohv 16v

    Thinkin bout buyin another eldo 1993 (white diamond) with a 4.9L V8 SFI OHV 16V . whats the scoop on this engine? Walt

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    Re: 4.9l V8 Sfi Ohv 16v

    they are very good engines.... 200hp 275ft lbs of tourqe.... low on the hp, [very] high on the tourqe, it's right there when you hit the gas... it is made by Cadillac, only used in Caddy's..... no real known problems, like things going wrong...... they have a rough idel, need premium gas (dosn't bother me) with normal maintenace will go well into 200k miles.... it is smart to change the coolent every year (gotta use special GM tablets though, do a search, you'll know what I mean)

    they are about a second or so slower in the 1/4 then NorthStar powered cars.... but alot more simple and less maintenance..... I am very happy with mine, there is NO aftermakret at all (well, K&N drop in and a Fast Chip computer chip) too bad the power output wasn't a little higher....or a way to bump it up a little..... although next year I want to get a nice Flow Master cat-back exhaust system....

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    Walt is offline Cadillac Owners Member
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    Re: 4.9l V8 Sfi Ohv 16v

    Quote Originally Posted by Night Wolf
    they are very good engines.... 200hp 275ft lbs of tourqe.... low on the hp, [very] high on the tourqe, it's right there when you hit the gas... it is made by Cadillac, only used in Caddy's..... no real known problems, like things going wrong...... they have a rough idel, need premium gas (dosn't bother me) with normal maintenace will go well into 200k miles.... it is smart to change the coolent every year (gotta use special GM tablets though, do a search, you'll know what I mean)

    they are about a second or so slower in the 1/4 then NorthStar powered cars.... but alot more simple and less maintenance..... I am very happy with mine, there is NO aftermakret at all (well, K&N drop in and a Fast Chip computer chip) too bad the power output wasn't a little higher....or a way to bump it up a little..... although next year I want to get a nice Flow Master cat-back exhaust system....
    Thanks for the info Rick

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    Re: 4.9l V8 Sfi Ohv 16v

    The 4.9 also has the same torque as a new Ferrari 360 Modena. (275)

  6. #5
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    Re: 4.9l V8 Sfi Ohv 16v

    very reliable engine. simple technology. good old pushrod engine that is low maintanance. I would get one anyday over a northstar. Northstar engines have head gasket problems and I just dont see what all the hype is about. I mean its a good running engine with more power than the 4.9 but thats only when they're healthy. Truth be told, around town there is no difference in the performance of these 2 engines. Only way you can tell the power difference is on the highway.
    The 4.9 still cruises very smooth and silent at 75-80 mph and still knocks down close to 30 mpg which is kind of unheard of for a V8 engine, very good motor in my opinion.

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    Re: 4.9l V8 Sfi Ohv 16v

    i have the 4.9 in my cady and i love it. ive done many mods to it, which gave it a little more thump. i put a flowmaster 80 muffler on the car and man does it sound good. check out my video in my signature

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    Re: 4.9l V8 Sfi Ohv 16v

    I like the sound. Sounds like the LT1 Z28's with a flowmaster. Did you notice any difference in power with the CAI and the muffler setup? Also where did you get the CAI, now I want one.
    Great choice of tips, the rectangular tips are my personal favorites.
    Nice Deville!

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    Re: 4.9l V8 Sfi Ohv 16v

    there is a big difference! the throttle is alot more responsive. plus the looks i get for it being a cadillac and sounding like that. ive heard plenty of N* exhaust videos with magnaflow and flowmasters on there cars, yea they sound great but the exhaust note just doesnt drop like the 4.9 does. people ask me if ive done an engine swap, i just say nope good ol 4.9 and they give me the blank stare. the intake i custom made with a 3" cone filter. thanks for the comments!

  10. #9
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    Re: 4.9l V8 Sfi Ohv 16v

    I think an aftermarket exhaust such as yours sounds better with a regular V8 with no dual cams like the N*. The N* sounds ok with aftermarket mufflers but it doesnt have that muscle car sound like the 4.9 or any other old school tech V8.

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    Re: 4.9l V8 Sfi Ohv 16v

    the 4.9 is a pushrod engine it gives it that low rumble
    search some exhaust videos on youtube youll see the difference

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    Re: 4.9l V8 Sfi Ohv 16v

    The Corsa cat-back on my STS' Northstar is a VERY sweet sounding engine at 7,000 RPMs! No 4.9 matches it for sounds!

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    Re: 4.9l V8 Sfi Ohv 16v

    sound clips?

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    Re: 4.9l V8 Sfi Ohv 16v

    The Corsa website has some great sound clips of the STS system! And yes, it does sound THAT good!

    http://www.corsaperf.com/flashcadillac.htm

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    Re: 4.9l V8 Sfi Ohv 16v

    damn that sounds good!, u can tell its a N*, but the thing i like the most about a 4.9s exhaust is that it has a much deeper tone to it and slower idle.

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    Re: 4.9l V8 Sfi Ohv 16v

    Quote Originally Posted by Night Wolf View Post
    they are very good engines.... 200hp 275ft lbs of tourqe.... low on the hp, [very] high on the tourqe, it's right there when you hit the gas... it is made by Cadillac, only used in Caddy's..... no real known problems, like things going wrong...... they have a rough idel, need premium gas (dosn't bother me) with normal maintenace will go well into 200k miles.... it is smart to change the coolent every year (gotta use special GM tablets though, do a search, you'll know what I mean)

    they are about a second or so slower in the 1/4 then NorthStar powered cars.... but alot more simple and less maintenance..... I am very happy with mine, there is NO aftermakret at all (well, K&N drop in and a Fast Chip computer chip) too bad the power output wasn't a little higher....or a way to bump it up a little..... although next year I want to get a nice Flow Master cat-back exhaust system....
    That post is 4.5 YEARS old...... why bring back the old thread?

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