2 bolt or 4 bolt splayed caps?
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Joined: Aug 2001
Posts: 3,505
From: looking for a flow bench so Brook and I can race
Re: The winner
Originally posted by Mr. Z28 73/97
Several things to consider here, first the engine builder with the 406 2bolt, 400's have bigger main caps than all other sbc, so you can get away with that but I doubt 9000rpm from a 406.
Secondly you're planning on NOS right, then without a doubt get the splayed or straight 4 bolt conversion done.
Thirdly go to SDPC.com you can get GM billet splayed caps for $50.00 ea you'll need 3 center and a billet front cap $55.00 best prices going and the best part is with these caps as opposed to some others you will still be able to use your dipstick. With some of the othe caps ( Milodon comes to mind ) you can't get the dipstick past the cap.
Several things to consider here, first the engine builder with the 406 2bolt, 400's have bigger main caps than all other sbc, so you can get away with that but I doubt 9000rpm from a 406.
Secondly you're planning on NOS right, then without a doubt get the splayed or straight 4 bolt conversion done.
Thirdly go to SDPC.com you can get GM billet splayed caps for $50.00 ea you'll need 3 center and a billet front cap $55.00 best prices going and the best part is with these caps as opposed to some others you will still be able to use your dipstick. With some of the othe caps ( Milodon comes to mind ) you can't get the dipstick past the cap.
RPMS are the killer here-
a BASIC rule of thumb is-
hp and rpms kill rods
rpms kill crank
heat kills pistons
Registered User
Joined: Jan 2001
Posts: 105
TreyZ28
Yea rpm is hard on rod bolts and valve springs but hp/tq especially on a stroker with spray is going to be hard om the 2 bolt mains. But the winner will find out when his mains get to moving around under that power and he has to rebuild his motor.
And Nitrous kills everything eventually.
And Nitrous kills everything eventually.
Last edited by Mr. Z28 73/97; Jun 16, 2003 at 08:21 AM.
Banned
Joined: Aug 2001
Posts: 3,505
From: looking for a flow bench so Brook and I can race
Dont get me wrong-
with enough hp- you can break a crank at 10rpm!
Revving to 6200, from what i've read and my own questioning of expertse when i built my motor-
its not needed
i'm reving to 6700 and im not worried
in my opinion, thats money better spent on a harmonic dampener-
or just get a corvette block or something
with enough hp- you can break a crank at 10rpm!
Revving to 6200, from what i've read and my own questioning of expertse when i built my motor-
its not needed
i'm reving to 6700 and im not worried
in my opinion, thats money better spent on a harmonic dampener-
or just get a corvette block or something
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