Thread: how to get 400-450hp
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10-06-2011 08:43 PM #1
how to get 400-450hp
I have a 1978 chevy pickup 4x4, 4 speed with a 3.73 posi rearend and a 350 in it that I use for towing cars and stuff, the engine has flat top pistons with standard bore, headers and a 600 cfm edelbrock carb,it has a step above rv cam in it with stock 76cc heads, and true duel exhaust with glasspacks, I was wanting to get more horsepower for it like from 400-450, and so what should I do to the engine to get it there
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10-06-2011 08:51 PM #2
For towing and hauling you need torque, not horsepower..... Rather then spend a bunch on your small block, the easiest and probably biggest gain for the $$$$$ would be to replace the SBC with a Big Block Chevy..... A stock 454 will put out more torque then a much modified small block built with torque as a goal, and it will do it at a lower RPM which will also increase the reliability.....Yesterday is history, tomorrow is a mystery, Live for Today!
Carroll Shelby
Learning must be difficult for those who already know it all!!!!
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10-07-2011 01:32 PM #3
I agree with Dave. A big block is the way to go.
Lynn
'32 3W
There's no 12 step program for stupid!
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10-07-2011 02:44 PM #4
Yep big blockCharlie
Lovin' what I do and doing what I love
Some guys can fix broken NO ONE can fix STUPID
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11-07-2011 10:47 AM #5
Dave's spot on, go BBCR.I.P. Kustoms LLCSpeed Shop & Fabrication"Race Inspired Products"
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11-07-2011 02:43 PM #6
It would seem that that's not what he wanted to hear, but it's tough to get decent torque out of a short arm engine.Ken Thomas
NoT FaDe AwaY and the music didn't die
The simplest road is usually the last one sought
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11-07-2011 04:12 PM #7
turn the aircleaner top upside down to let in cold air
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11-07-2011 05:11 PM #8
It seems that we have this conversation every couple months – “wanted: gobs of horsepower from small cubic inches – need to tow the Queen Mary (or some such)… Must be reasonable and oh by the way, here’s what I’ve already done.”
As mentioned by others, a stock big block will almost without exception out lug a small block. I don’t know if people are “afraid” of big blocks or what. In a Chevy there’s not much to it and it can be almost a “bolt in” as far as mounts and transmissions go. Sure, the exhaust is different but a visit to the local muffler shop can quickly remedy any issues there.
There are 454 engines on Craigslist and eBay starting at $700 and for less than $1,500 there’s some pretty complete deals. Call Pat and he will make you a genuine stump puling monster that will bolt right in and last a long time.
To get close in a small block you’ll spend a lot more money.
My two cents,
Glenn"Where the people fear the government you have tyranny. Where the government fears the people you have liberty." John Basil Barnhil
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11-07-2011 08:10 PM #9
I am sure you guys remember the old 375/350's and that was without the now aftermarket heads and hydro roller cams.So can it be done??. I am sure it can.
I don't disagree with the swap of a BBC,but there are always more than one way.A consideration for a LS1 with a re-cam and some head work could exceed the request for hp and with the swap of supporting electronics from a donor vehicle still offer outstanding gas mileage.Good Bye
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11-07-2011 08:51 PM #10
The OP hasn't been around for a month, guess he didn't hear what he wanted to hear.....
Torque is for towing
Horsepower is for goingYesterday is history, tomorrow is a mystery, Live for Today!
Carroll Shelby
Learning must be difficult for those who already know it all!!!!
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11-07-2011 08:59 PM #11
Yeah Dave,I know that.Just trying to stay within the spirit of thread's request.Good Bye
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