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| next upgrades on 225 https://slantsix.org/forum/viewtopic.php?t=59716 |
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| Author: | bigcasey123 [ Wed Jun 01, 2016 9:02 am ] |
| Post subject: | next upgrades on 225 |
Hi guys i have recently done a few very mild upgrades to my 225 dart. i have put an electronic ignition kit on my distributor new plugs and wires new brakes new gas tank and fuel lines new fuel filter 2 bbl (i think 350 cfm) holley carb and very soon i will be putting on new (2 1/4 in) exhaust. So i was wandering what upgrade or mod i should do to the engine next. The only relatively big upgrade i did was the 2bbl carb and adapter. Any thoughts on exhaust? and what should my next move be. thanks for the help |
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| Author: | bigcasey123 [ Wed Jun 01, 2016 9:08 am ] |
| Post subject: | |
Also with the current upgrades i have what rpm do you think the engine will peak at. i know that the added fuel should up the power curve a little. And what rpm do you think it is safe to call the "redline" |
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| Author: | coconuteater64 [ Wed Jun 01, 2016 10:08 am ] |
| Post subject: | |
It's impossible to determine peak torque apart from knowing things like cam profile, carburetor size and spark curve, compression, exhaust, and so on. I'm running a Holley 350 cfm 2 barrel and dual Dutra manifolds on a stock hydraulic 225 and it pulls like a 318 up to about 4K, then falls on its face. But it's rare that I rev past 2500 rpm. |
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| Author: | bigcasey123 [ Wed Jun 01, 2016 10:50 am ] |
| Post subject: | |
Thanks for the help. So is it safe to run in up to 4k or are you pushing your motor hard |
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| Author: | slantzilla [ Wed Jun 01, 2016 10:50 am ] |
| Post subject: | |
If it has stock valvesprings it will quit making any power around 4500 rpm. It might wind a little higher, but it won't be making much steam. |
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| Author: | bigcasey123 [ Wed Jun 01, 2016 10:53 am ] |
| Post subject: | |
So would installing stiffer valve springs help increase the rpm. And would it be worth doing to my engine as it is |
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| Author: | coconuteater64 [ Wed Jun 01, 2016 11:19 am ] |
| Post subject: | |
You need to look at the total package. Buzzing past 4500 even with stiff valvesprings would just make more noise if you have a stock cam, intake, exhaust, and so on. |
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| Author: | bigcasey123 [ Wed Jun 01, 2016 11:35 am ] |
| Post subject: | |
I think I might put on stiffer springs (not too much stiffer than stock) and 1.6 rocker arms. Just to give it a few extra rpm. |
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| Author: | Joshie225 [ Wed Jun 01, 2016 12:26 pm ] |
| Post subject: | |
If you find 1.6 rocker arms that are less than $500 a set please let everyone know. |
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