Coils hitting AC box

[autonaut]

From what i can gather, swapping in LS engines in a gbody that has the big AC box still in place, the #8 coil hits the box.

But is that the case if you swap in the 97-98 LS1 that has no coil bracket and from what i can see is closer to the valvecover with the #8 coil flipped horizontally placing it further foreward as well?

Or phrased differently:
Did you have any clearance issues between the #8 coil and AC box with the 97-98 engine placed in the original smallblock location?

 

[Built6spdMCSS]

Not all coils on the brackets sit in the same place, and those earlier perimeter valve cover heads are a pain to work with. You can set the engine in the car a little forward to help with clearance.

 

[motorheadmike]

The early heads are not a desireable option, the electronics are even worse. You can try aftermarket valve covers or coil relocation kits, or just notch the AC box for room. I do believe that the Holley kit moves the engine forward an inch to avoid this problem.

 

[KARLA MARZETTE]

I have a lq9 in my 87 regal. I just moved forward a touch with dirty dingo adj mounts. No issues.

 

[autonaut]

The early heads are not a desireable option, the electronics are even worse. You can try aftermarket valve covers or coil relocation kits, or just notch the AC box for room. I do believe that the Holley kit moves the engine forward an inch to avoid this problem.

Whats wrong with the electronics?

 

[motorheadmike]

Whats wrong with the electronics?

http://ls1tech.com/forums/new-ls1-owners-newbie-tech/123145-1998-ls1-cars.html

 

[Built6spdMCSS]

1998 PCM's are slow operating, don't datalog as fast and can't handle some of the things that the newer ones can.

As far as coils hitting the box, get a heat only box if you want to go that route, tons of room...

 

[TURNA]

60 buxx

Coil relocation brackets.

Problem solved and look gooooooood

 

[Jjimmyg]

Just use the Holley mounts / pan . Trim the last coil mount and remove the mounting boss from the valve cover. No issues

 

[motorheadmike]

Even after notching my AC box I still had to move the coil up about 1/4". I just slotted the holes and nut and bolted it. There is now 1/8" clear which is plenty with solid motor mounts.