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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
I am currently running an S&S case and crank@96". I would like to know what is the maximum size I can have the cases bored to? Looking at possible 116"... 4.0" x 4.625". If that's not possible what would be? The case in question is the one shown below.. Thanks..
I believe the biggest bore is about 3 11/16 inch.. The problem is that the studs are too close to the bore and there isn't any gasket surface left if you go bigger. SnS engine cases that support 4 inch and 4 1/8 bore have case deck raised 1/2 inch and different cylinder stud spacing..
Last edited by Max Headflow; Aug 28, 2022 at 12:04 PM.
Reason: 3 11/16
Yeah I'm not totally sure about the 3 5/8" cases.. I do know that S&S does make a different case for 4.0" bore and larger.. might be the way I go.. And then the pistons and cylinders..
Yeah I'm not totally sure about the 3 5/8" cases.. I do know that S&S does make a different case for 4.0" bore and larger.. might be the way I go.. And then the pistons and cylinders..
The 4 inch / larger bore case has a 1/2 in taller deck and different cylinder stud pattern. Heads and cylinders are different.
The 4 inch / larger bore case has a 1/2 in taller deck and different cylinder stud pattern. Heads and cylinders are different.
I've read that even the cam chest is a half inch wider which would be necessary so yeah it's definitely a totally different design but man it sure would be nice to have 116 cubic inch motor in that baby.. My problem is I get tired with what I have and need to move forward. I guess it's like a heroin junkie.. I need another hit man.. Maybe This Time some fentanyl.. Lol..
However you might be right about maybe going to NOS or maybe even a turbo.. at this point I bet it would be cheaper than going to Cases, cylinders and Pistons.. I don't know we'll see..
But in all honesty going with those two options would create so much more power than I really want which means building a bigger drivetrain and I really didn't want to do that.. I just wanted to go with a mid grade 113-116 cubic inch 10.2:1 build that had really nice torque nothing crazy stupid.. like maybe 130-135 lb tq..
Last edited by 98hotrodfatboy; Aug 28, 2022 at 02:51 PM.
EVO run pretty good with AC.Exhaust, head work and Cam. Followed with proper tune. If you keep it with reason they run great and darn near bullet proof.
Mine is 26 years old still doing the job.
I've read that even the cam chest is a half inch wider which would be necessary so yeah it's definitely a totally different design but man it sure would be nice to have 116 cubic inch motor in that baby.. My problem is I get tired with what I have and need to move forward. I guess it's like a heroin junkie.. I need another hit man.. Maybe This Time some fentanyl.. Lol..
However you might be right about maybe going to NOS or maybe even a turbo.. at this point I bet it would be cheaper than going to Cases, cylinders and Pistons.. I don't know we'll see..
But in all honesty going with those two options would create so much more power than I really want which means building a bigger drivetrain and I really didn't want to do that.. I just wanted to go with a mid grade cubic inch 10.2:1 build that had really nice torque nothing crazy stupid.. like maybe 130-135 lb tq..
I don't think it's 1/2 inch but maybe about 1/8 to 1/4.. The crank would have to be different if much more. I do know that SnS TC cases have the tappet covers out about 1/8 inch. The Evo cases moved the Tappet blocks out a little.
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Case Boring....
