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Author Topic:   Sbc Questions
Rookieracer76
Member
posted October 13, 2002 02:53 PM
I'm not too good when it comes to motors so i have a few questions.

Are all sbc parts conpatiable ? (like 305,350,383 and 400)

Would putting 400 parts in a 350 block make more power? is it worth it?

what makes a stroker motor ?

Any help is appreticated! Thanks to any help

carscomefirst
Member
posted October 13, 2002 09:45 PM
carscomefirst, thanks that helped alot. one more question. is it better to stroke or destroke a motor? whats the advantage ? Thanks !


rico 08
Member
posted October 14, 2002 12:54 PM
STROKED MOTORS WILL HAVE MORE BOTTOM END TORQUE THIS HELPS IN HEAVIER CARS BUT IN LIGHTER CARS THEY CAN BE HARD TO GET OFF THE CORNER WITH SAME CAM-RPM RANGE. DESTROKED MOTOTS ARE JUST THE OPPOSITE AND LIKE MORE RPM AND USUALLY HAVE LESS BOTTOM END AND MORE ON TOP.


Rookieracer76
Member
posted October 14, 2002 06:09 PM
so if i put 400 sbc chevy parts in a 350 block would it be a 350 stroker ? Also why arent pistons interchangeable ? Thanks !

[This message has been edited by Rookieracer76 (edited October 14, 2002).]

jhon hollomon
Member
posted October 14, 2002 08:53 PM
If you put a 400 crank in a 350 you get a 383 stroker. Bore size restricts interchanging of most pistons.


carscomefirst
Member
posted October 14, 2002 08:57 PM
If i put a 400 crank in a 350 block with 350 flat top pistons, what rods do i use ? Do i use 350 connecting rods or 400 ? is one better then the other ? Is a longer rod better ? Thanks !


c21
Member
posted October 17, 2002 11:19 AM
Normally you will select a piston with the correct compression height to work with the rod length/stroke you have chosen.

a 6" rod or longer is a good choice for a 3.75" (400) stroke motor.

to find compression height, multiply the stoke times 1/2 (3.75 x .5 = 1.875) add the length rod you want (6.125" sounds good) and then subtract these two numbers from your deck height (stock is 9.025", -8.000 = 1.025") and you will come up with the "compression height" of the piston you are looking for (+ 0, - up to .025" or so).

clear as mud?

c21

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