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Old 20-04-2017, 11:52 AM
Musclecarnewbie Musclecarnewbie is offline
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454 big block engine

I have been told that a 454 big block engine is basically a reliable truck engine and best suited for general cruising with minimal power. I've done some basic research with mixed results. Any reason to avoid a car with a 454 big block or is it more power/performance than I've been told?
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  #2  
Old 20-04-2017, 12:06 PM
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Stealth 69 Stealth 69 is offline
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I guess it depends if you're talking to/reading about people that actually play with engines - or just hear about them - haha

My previous powerplant was a 454 - and end result is always what you're willing to put into it - in my case a full solid roller 489 (then 496) making a conservative 670hp (flywheel) .. and this is probably middle of the road compared to a few others on here

I wouldn't think it'd be too hard to squeeze 500hp on a small budget starting with a decent 454
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Old 20-04-2017, 12:07 PM
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Good question. But I'd suggest a slightly different approach. Any V8 can be made to be a good reliable cruiser, or any V8 can be made into an intolerable monster wanting to be unleashed. It's all about how it's built.

Out of the box from the factory a BBC will have more power and more torque than the same small block's of it's day (can't compare a BBC of the 80's to a small block LS motor of the last 5 years).

But more reliable as a cruiser ? with minimal power ? A lot of your RPM's will have more to do with stall size (if a stall), diff ratio, trans gearing (look at a 2004R versus a TH350 as an example to see the difference there) and cam specs of the engine.

So it's another one of the depends what you want questions. Too many variables to just say the engine alone if the key determinant in what is a good reliable low RPM crusier, but a BBC is a good choice regardless. They didn't sell em by the hundred's of thousands for no reason (having said that they sold millions upon millions of small blocks)
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Old 20-04-2017, 05:36 PM
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BlackoutSteve BlackoutSteve is offline
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Where are you getting this misinformation from that's telling you a big block Chevy, or more specifically, one of it's many combinations of bore & stroke is a truck engine?

All of these "LS" prefixes are 454s from the factory. The LS7, although never installed into the Corvette as originally intended, was sold for decades "over the counter" as a reliable racing crate engine.



Like the 366T and 427T that preceeded the 454 during the 60's, it was also available in differing configurations for (light) truck usage, just like the HT502 of today.

Cam, comp & heads is the decider. Not bore, stroke or displacement. (Obviously, some are better than others.)
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Last edited by BlackoutSteve; 20-04-2017 at 05:39 PM..
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Old 20-04-2017, 05:45 PM
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Just go a 632 and be done with it....I'm told that size does matter
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Old 20-04-2017, 06:01 PM
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Originally Posted by BlackoutSteve View Post
Where are you getting this misinformation from that's telling you a big block Chevy, or more specifically, one of it's many combinations of bore & stroke is a truck engine?

All of these "LS" prefixes are 454s from the factory. The LS7, although never installed into the Corvette as originally intended, was sold for decades "over the counter" as a reliable racing crate engine.



Like the 366T and 427T that preceeded the 454 during the 60's, it was also available in differing configurations for (light) truck usage, just like the HT502 of today.

Cam, comp & heads is the decider. Not bore, stroke or displacement. (Obviously, some are better than others.)

Exactly spot on. Just because Chevrolet used them in trucks doesn't mean they wern't good to be used for High Performance also.

Misinformed info for sure.

Last edited by chevelle; 20-04-2017 at 06:07 PM..
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Old 20-04-2017, 08:07 PM
Geoff 4 Geoff 4 is offline
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Another thing to remember is that both the big block [ 454 ] & small block Chevs are extremely popular engines, with the greatest aftermarket supply of parts imaginable.

You can go from mild to wild, & the sky is the limit....
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Old 20-04-2017, 08:36 PM
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Just go a 632 and be done with it....I'm told that size does matter
I'll call you out Chris, I say the extra cubes wont help
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Old 20-04-2017, 09:15 PM
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Oh so it really is how you use em ��
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Old 20-04-2017, 09:20 PM
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Oh so it really is how you use em ��
Yeah, not all about size big boy
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Old 21-04-2017, 08:23 PM
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Just go a 632 and be done with it....I'm told that size does matter
.......If cubes are King

Horse per cube, if we're on par Chris you should be at around 1150fwhp/800rwhp

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Old 21-04-2017, 08:52 PM
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there is no replacement for DISPLACEMENT
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Old 21-04-2017, 08:56 PM
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If you want more inches.................... Stroke it
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Old 21-04-2017, 09:01 PM
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there is no replacement for Turbo's
Gotcha

---------- Post added at 10:01 PM ---------- Previous post was at 09:57 PM ----------

You can cube BBC's to wherever you want, but if you don't spend the coin and spend it where it needs to be spent you may as well just throw some fuelies on your 283 and bast of into the sunset
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Old 21-04-2017, 09:05 PM
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Gotcha

---------- Post added at 10:01 PM ---------- Previous post was at 09:57 PM ----------

You can cube BBC's to wherever you want, but if you don't spend the coin and spend it where it needs to be spent you may as well just throw some fuelies on your 283 and bast of into the sunset
Shirley you cant be serious
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