Inliners International Forums General Discussion Engines 250 HEI Question

I know GM did large cap HEI on 250's in the 80's but did they ever do a small cap HEI? Can a dist from a FI 4.3L V6 be made to work with a 250?

I am interested in this kit http://www.affordable-fuel-injection.com/chevy-system.htm from affordable fuel injection but I want to run it on a 250 with a small cap distributor, I am just trying to figure out how to get a small cap Dist to work on a 250.

Can a large cap 250 be made to work with FI easily?

I like what Megasquirt does with there computers but I really don't need all the fine tuneability of it and this kit offers all new components for what it would cost me to run a Megasquirt & a junkyard system after all the components were rebuilt.

This kit seems to be more user friendly for what I do and easy too.

Harley

Tom Langdon at Stovebolt Engine Parts sells a small cap HEI kit for the GM 250.

http://www.stoveboltengineco.com/

The link you provided says

"This system includes a complete TBI conversion plus a custom HEI distributor for complete fuel and spark control."

I'm thinking your opening a can of worms if you don't use their "custom HEI". Whether they have one or not for a 250 is a another question. I have a 4.3 distributor I think and there is a difference in shaft lengths. I have to look at again to see if it could be made to work, but if they are supplying the distributor there is a reason. Let me know if that 4.3 distr will help.

Larry

I have emailed him to find out what options are available for his TBI setup to work on a 250. He emailed me after seeing a post on another board about looking for options for FI on a 250 so he knows the app. I emailed him this morning so sometime tomorrow he will reply to my email.

Harley

The stovebolt small cap HEI doesn't say it works with the 250. It says 216, 235, 261.

Harley

i use a large cap hei with electronic spark control with efi. the factory application is 1982 chevy pickup 250-292 with california emmisions. it is available from all parts vendors ie: napa, autozone ect. just trade in your old one as the core. tom

So you are using the Cali-emission dist with your EFI. Does it connect right up to the system and your set or does it need modified? Are you using a standard TBI system?

So what I am gathering here is I can use a junkyard TBI setup from a 4.3L & the Cali-emission dist from a 250 and I am set on FI components?

Harley

that is correct, you can use a junkyard 4.3 tbi and the calif dist will plug right in. it has the large 4 pin plug. i am using a home brewed multiport injection with electronic spark control. with the 4.3, it would be nice to be able to tune the FI and timing yourself. tom

Would this cam be suitable to run with TBI?

http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=61-233-4

Harley

harley, i would say yes, but one with a 112 degree seperation would be better. tom

Tom does offer a small cap HEI that works with the GM 250. It's not listed on the website. I have one with an external coil. If I remember correctly, the cap actually comes from the Chevrolet 2.8L V6 engine. Give him a call.

winter is correct, i had forgot about that. although it is not for computer controlled timing, tom langdon thought he could arrange to build one that way. tom