Hey. We are going to dyno my AFR headed 355 next week and forgot to plug the fuil rail opening on my 1986 Iroc for cold-start. The runner is already plugged, but the back of the rail is not. Does the newer style not have an opening at all(machined different) or do they just have some kind of cap? What has everyone else used?

Thanks

Chris

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

I haven't tried this but here is a quote form an e-mail.

"Get a 16 mm oil drain plug, saw off the unthreaded part with a hacksaw, and
get a copper washer, 5/8" I think. Then use the washer and plug to plug the
end of the fuel rail. I also used Loctite blue just to make sure. About $5 in
parts at most parts stores. -JW"

James

 

I was reading on the prom board that you could pull the cold start fuse. Would that eliminate the need of a plug or not.

Thanks

Chris

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

Sure, if you want fuel spraying everywhere you can just leave the hole open and yank the fuse.

 

Pulling the fuse is for when the cold start valve is installed as well as it's plumbing from the fuel rail. If the fuel rail isn't plugged you will have an external combustion engine

James

 

external...haha...lol

He's right though, if the cold-start is plugged in and the plumbing is all connected, all that is needed is to pull the fuse.

 

Yea...I will plug it since the engine is going to be run on an engine dyno this week. Very excited. Still need prom help. Only have the 305 chip. Any suggestions??? Getting stuff to make my own soon. :-)

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

What size injectors?

 

24 lbs. I know very little, but am learing about the chip part, the only problem is dyno is very soon. Any help appreciated

 

If anyone can also help me with the prom thing by e mail or help(In NC) my e mail is NufNuffZ28@yahoo.com

Thank You

Chris

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

Did you read Traxion's prom burning tech article yet? Lots of good info there.. As long as you don't ask people to do it FOR you, you'll find lots of people willing to help you on the PROM burning board of this BBS, too!

 

Well if you are still running the 86 ecm, you need to use an 89 chip. It would be short notice for the dealer to get one but maybe you can find someplace that has one.

 

Yea. I am using a friends stock 89 350 chip right now, but I thought the chips were physically the same(27C128), just different programs. So i can program my stock chip and take the cold start out of it? Correct??

Thanks for all your help.

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1986 305 TPI
8.0 @88 in the 1/8
**Soon to be 355

 

And to answer one of your questions, the 89-92 fuel rails simply do not have any opening at all.

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1989 IROC-Z 5.7L
NOS 5151 150HP kit
ProBuilt 700R4, PI Vigilante 2800 stall lockup
Baer Brakes 12" Sport System