Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

My little 305 build. Hp?

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Old 05-20-2014, 09:31 PM
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Default My little 305 build. Hp?

I recently just finished my 305 build.
(Bottom end)
.40 over bore
Block has been decked
Arp main bolts
Eagle I beam rods
Speed pro flat top pistons
Comp double roller timing chain
Comp 280h cam.
Milling oil pump

(Heads)
305 high out put heads
3 angle valve job
Comp full roller rocks 1.52 ratio with guide plates
Arp head bolts
Comp valve springs
(Intake)
Performer rpm air gap
Full msd ignition

This is my little 305, yeah it's not a 350 but I like to build motors to see what they will do. Any one know about how much hp I'm looking at? Let alone this is goin in a s10
Old 05-21-2014, 09:11 PM
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210 HP on a good day.
Old 05-24-2014, 09:49 PM
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Only 210? I figured a little more than that. Thanks
Old 05-24-2014, 11:23 PM
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I would guess around 300-320 crank.
Old 05-24-2014, 11:24 PM
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If you did all that, I would have ported the heads.
Old 05-24-2014, 11:41 PM
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The 280 is a good cam for that 305. I was jacking around one day with some old parts a slid a comp 260 in a 283 with a 600 vac secondary. It wound up like a buzz saw and ran pretty decent for what it was.
Old 05-25-2014, 07:51 AM
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I'm hoping it will be okay, I'm goin to be dragging this truck or nothing just a weekend driver. Do you think that 280h cam will mess with my power brakes?



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