Attn:Joe Lucia;1970 LT1 Delco Coil Confusion

[Larry E.]

Hello:
Restoring a 1970 Z28 with LT1 which would also applies to Corvettes. Being
an owner of both Corvettes and Camaro's are paths cross often. I belong
to both Corvette and Camaro forums. Joe: look at the below thread that
was on the Camaro forum the other day. Let me know if it is true or not.

Here Is A Little Coil History For Your Question

Coils Are Embossed With The Three Digit Code That Represents A Coil Assembly - Most 12 Volt Coils Are Phyiscally The Same Except For The Embossed Three Digit CODE - Early Coils Do Have Delco-remey In A Smaller Font

The Three Didgit Code Is In Reference To The Coil Bracket With A Certain Degree Angle Needed For An Engine And Air Cleaner Application

THE 293 COIL ASSEMBLY IS THE STANDARD COIL BRACKET USED ON MOST CARS AND TRUCKS AND USES A 25 DEGREE ANLGE

SPECIAL HI-PERFORMANCE CARS USE COIL BRACKETS WITH MORE THAN THE STANDARD 25 DEGREE ANGLE AND WILL VARY ON APPLICATION

Original Delco-remy Coils From 1955 To 1967 Use The 12V
083 12V
204 12v
267 12v

Original Delco-remy Coils from 1966-67 use BR
270 BR

Original Delco-remy Coils Changed In 1968 To B-r
270 B-r 293 B-r

270 Br Coil Was First Used On The 1966 Chevelle With The 4 Bc And The Big 17" Air Cleaner

1968-72 Corvette - 1969 Z28 W/ Cowl Induction Used The 270 B-r

1969 Z28 W/O COWL INDUCTION 298 B-R

1970-72 Z28 Used The 270 B-r

Hope This Answers Your Questions

Joe: Is this true about the coil bracket angle? If anybody else as any
ideas on this (Like Terry M.) please chime in.

Thanks; Larry

[Terry M.]

Re: Attn:Joe Lucia;1970 LT1 Delco Coil Confusion

I can verify part of this.

For PRODUCTION coils the number is the last three digits of the ASSEMBLY part number. That ASSEMBLY included the coil and bracket, because that is the way the assembly was shipped to the Corvette assembly plant. It is probably reasonable to assume that similar practices applied to other body style assembly plants.

The differences in the coil mounting brackets may have included the angle of the bracket as well as the spacing on the mounting holes, and whether one side was slotted or both sides had holes for the mounting hardware.

I am skeptical of the B-r. I have seen coils with B R, and B-R, but never a lower case "r." Not to say they never used the lower case -- I've just never seen it. It is possible my experience is more parochial than that of others. FWIW: I have been told the BR is for Ballast Resistor.

[Dan L.]

Re: Attn:Joe Lucia;1970 LT1 Delco Coil Confusion

The coil bracket angle was different on the '70 Z because of the rather large dual snorkle air cleaner.

[Joe L.]

Re: Attn:Joe Lucia;1970 LT1 Delco Coil Confusion

I can verify part of this.

For PRODUCTION coils the number is the last three digits of the ASSEMBLY part number. That ASSEMBLY included the coil and bracket, because that is the way the assembly was shipped to the Corvette assembly plant. It is probably reasonable to assume that similar practices applied to other body style assembly plants.

The differences in the coil mounting brackets may have included the angle of the bracket as well as the spacing on the mounting holes, and whether one side was slotted or both sides had holes for the mounting hardware.

I am skeptical of the B-r. I have seen coils with B R, and B-R, but never a lower case "r." Not to say they never used the lower case -- I've just never seen it. It is possible my experience is more parochial than that of others. FWIW: I have been told the BR is for Ballast Resistor.

Terry and Larry-----


I agree.

[Brad M.]

Re: Attn:Joe Lucia;1970 LT1 Delco Coil Confusion

This post does not even mention the 272 coil which was used on the 70 and 71 Corvette Lt-1