| Author |
Message |
Eric Tellier
Guest
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 Posted:
Sun Jan 23, 2005 6:18 pm Post subject:
torque specs for rebuilt engine |
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Hi folks, i am rebuilding an sbc, the block is from era 80-85, 350 4 bolt
main, passenger side dipstick , the heads are 305HO, 58cc combustion chamber
out of an monte carlo 86, and the crank, connecting rod, piston and the
other things are from an chevelle 74, my question is the following which
engine torque specs should i use? since none of the parts are all from the
same engine nor same era?
Eric
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Bret Chase
Guest
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| Posted:
Sun Jan 23, 2005 8:00 pm Post subject:
Re: torque specs for rebuilt engine |
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On Sun, 23 Jan 2005 08:18:02 -0500, "Eric Tellier" <etsi@videotron.ca>
wrote:
| Quote: | :|Hi folks, i am rebuilding an sbc, the block is from era 80-85, 350 4 bolt
:|main, passenger side dipstick , the heads are 305HO, 58cc combustion chamber
:|out of an monte carlo 86, and the crank, connecting rod, piston and the
:|other things are from an chevelle 74, my question is the following which
:|engine torque specs should i use? since none of the parts are all from the
:|same engine nor same era?
:|
:|Eric
:|
|
I'd use the 80-85 specs and dump the 305 heads. you're just begging
for detonation from the sharp edge due to the 305's smaller bore.
-Bret |
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Eric Tellier
Guest
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| Posted:
Sun Jan 23, 2005 8:14 pm Post subject:
Re: torque specs for rebuilt engine |
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the reason i chose thoses heads was due to their small combustion chambers
(58cc) therefore givin me a better compression ratio then a normal 350 heads
with a 76cc chamber, was im wrong?
Eric
"Bret Chase" <nunya@business.net> wrote in message
news:5ue7v0l1tgo41f0vlotkt3irasuqv1kekm@4ax.com...
| Quote: | On Sun, 23 Jan 2005 08:18:02 -0500, "Eric Tellier" <etsi@videotron.ca
wrote:
:|Hi folks, i am rebuilding an sbc, the block is from era 80-85, 350 4
bolt
:|main, passenger side dipstick , the heads are 305HO, 58cc combustion
chamber
:|out of an monte carlo 86, and the crank, connecting rod, piston and the
:|other things are from an chevelle 74, my question is the following which
:|engine torque specs should i use? since none of the parts are all from
the
:|same engine nor same era?
:|
:|Eric
:|
I'd use the 80-85 specs and dump the 305 heads. you're just begging
for detonation from the sharp edge due to the 305's smaller bore.
-Bret |
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el Diablo
Guest
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| Posted:
Sun Jan 23, 2005 8:35 pm Post subject:
Re: torque specs for rebuilt engine |
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"Eric Tellier" <etsi@videotron.ca> wrote in message
news:pbPId.10243$hO4.105351@weber.videotron.net...
| Quote: | the reason i chose thoses heads was due to their small combustion chambers
(58cc) therefore givin me a better compression ratio then a normal 350
heads with a 76cc chamber, was im wrong?
Eric
|
No you're not wrong, but I think that Bret's warning is that you don't
increase it to much just by the heads. What he's referring to is that the
head is designed for a smaller bore, that's why the 58cc chambers. As well
the valves will be more in the center of the bore rather than spread across
the cylinder diameter. Could be it won't get a good even cylinder fill also,
hurting combustion and hence detonation.
Brian |
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