3.875" stock sbc

Does anyone have any thoughts or combos for a 3.875 stroke in a stock 350 sbc. Any help would be helpful to me.


Lookin to run in a 89 s10.  

what kinda power you looking to make, and whats ur budget?  

yeah we need to know if its for street or strip and how much money you want to spend?  

There is a reason why this isn't a common combination for a first generation 350 small Chevy. When you get to this level of stroke the gains from increasing bore size are more significant.

This has changed with improved engine designs such as the Gen III & IV where 15° heads and vastly improved induction has allowed oversquare engines to be very powerful.

That being said, It can be done with a small base circle cam and at least 6-inch rods. Sportsman Racing Products (SRP) does make a 1.062-inch compression height/distance piston for this application. You could adjust the deck height .010" or so and use a 1.05-inch compression height/distance, which Manley and Wiseco both make some high quality forgings of this spec. Some other high-end manufacturers may also make an acceptable piston for you, but you will probably only find shelf-pistons for 23° cylinder head applications.  

this setup would be for the strip. I am not tryin to go broke with it this is would be my first motor. Maybe around 5K o 6k i am just tryin to get started with a good motor.  

For a first motor I recommend using a tried and true combination. You will struggle enough to get the thing running in the first place...  

maybe just a 3.75 crank for 383 thats the most common first gen stroker motor  

yeah, stick with the 355 or 383.but if your going to rebuild its not really anymore money for the 383 package. unless you have your crank. you said it was for the strip and the 383 will give you alittle more lowend torque.  

If you have little experience with motors, go with what is tried and true.
It is hard enough to get things right when you are going the normal method than to re-engineer things.
I would stick to a 350 for now and spend the money on a good set of heads, decent ignition, roller cam and rockers, forged pistons, of at least 11-1 compression, some decent rods and rod bolts.
If it is going to be strictly a track car go with a tunnel ram and a pair of 450 carbs. I was always able to get 4-7 tenths out of one of those setups over a single 4. There are always used setups like this that can be picked up reasonably.
With careful shopping and buying some good used parts you should be able to build your motor and stay in your budget. A motor like that with a good converter, trans, and traction should put a 3000 lb. car in the mid 7s, 1/8th mile at the track.
I just built a 632 big block, with an all new short block, and a used top end for about 9500. It pushed a 3025 lb. race weight car to 5.81 in the 1/8th mile and 9.19 in the 1/4. I have been building race cars and motors for a long time however.