Engine RPM limiters
Engine RPM limiters here is what i want
Small or Big Block. I would like 350 -400 Hp and 400-450 torque at around 3000-3500 rpm. Here is a catch is it possible to limit the engine rpm to 4000 rpm. If it is limited at 4000 can i still produce this power? Pretty large engines back in the day like the 40s and 30s had power like this but a low rpm like this. I want to duplicate it or at lest get close.
If you have a long stroke, stroke longer than the bore you will produce a lower rpm is this the ticket to that? Let me know what you guys come up with!
Small or Big Block. I would like 350 -400 Hp and 400-450 torque at around 3000-3500 rpm. Here is a catch is it possible to limit the engine rpm to 4000 rpm. If it is limited at 4000 can i still produce this power? Pretty large engines back in the day like the 40s and 30s had power like this but a low rpm like this. I want to duplicate it or at lest get close.
If you have a long stroke, stroke longer than the bore you will produce a lower rpm is this the ticket to that? Let me know what you guys come up with!
Do you mean that you want to limit the RPM the engine is capable of turning to 4000 rpm or you just don't want to run the engine over 4000 rpm? Those #'s are easily made and surpassed with a big block. The GM 454 crate engine makes those #'s below 4000.
I would like to limit the engine to 4000 i realize that yes the engine is capable of well more than that but i want the limit to be that and dont just have to let off the gas. So ideally it would have a proper torque and hp curves for 0-4000 to match the rev limit. I dont want it to be in the middle of its power curve and hit a limiter either, a horrible noise!
Last edited by kill_machine85; Oct 9, 2012 at 03:14 AM.
Pretty large engines back in the day like the 40s and 30s had power like this but a low rpm like this. I want to duplicate it or at lest get close. I
ts not going to be right if it revs up to 5k or 6k. If it helps or matters it will be carb'd. I want little to no electronics on it. If i could run magneto i would however i will settle with an alternator.
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Your goal, seems a bit......counter intuitive in a way.....can it be done, im sure it can be done, but what motors are you talking about from the 30's and 40's that were in ANY SORT OF CAR and not Naval Fleet vessels were capable of 400 hp in the 40's??? your absolutely nuts.... The technology really wasn't there for a 400 hp motor to be practical in the 30's-40's aside from it being like a 1000 ci motor or something unless I am wrong here but....the only motors I know of that put that kind of power down in the 30's and 40's were HUGE industrial motors, not something that was going into a car..... I am assuming your wanting something for an automobile....lol
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The 502 towing crate engine makes 338 hp and 512 lbs tq at 2800 RPM. It still redlines at 5500 though so it would have to be electronically limited. I would call Comp and a few other cam companies and tell them what you're wanting to do and see what they suggest for a cam.
Your goal, seems a bit......counter intuitive in a way.....can it be done, im sure it can be done, but what motors are you talking about from the 30's and 40's that were in ANY SORT OF CAR and not Naval Fleet vessels were capable of 400 hp in the 40's??? your absolutely nuts.... The technology really wasn't there for a 400 hp motor to be practical in the 30's-40's aside from it being like a 1000 ci motor or something unless I am wrong here but....the only motors I know of that put that kind of power down in the 30's and 40's were HUGE industrial motors, not something that was going into a car..... I am assuming your wanting something for an automobile....lol
That said i probably shouldnt have 30s but int eh 40s most tank engines did this, non radial ones too. Yes they were big like v12s, 15 to 25L. I want to keep it similar to them output wise but clearly i cant afford a working 70-80 year old motor or i would just buy one. Also that said not all were diesels and i am not trying to copy a diesel engine otherwise i would pick up a diesel.
Thanks for the help so far i do appreciate it! Pretty hard to explain and ask without coming across crazy! lol As we can see.
Haha no! Im leaving my engine in my camaro. Actually working on an AC cobra kit car I may stick the LS1 into. This is for another vehicle im building but from scratch. To be like something from WW2.
To put it in perspective, we had an engine built from "a non sponsor" local engine builder, the motor put down 450hp and like 500lb/ft torque at the crank at 4200 rpms..... but after 4200 rpms the motor would fall on its face....... So It can be done. This was with a 383 stroker sbc motor, custom grind cam, in house valves, edelbrock 750 carb, and Edelbrock RPM Performer intake. Now to the wheels, im not sure how much it would have lost, but im guessing it would have been around 410 hp/ 450-60 lb/ft of torque which sounds like thats what your going for......pm me and i'll tell you the name of the local engine builder.