Since I finished the Holley swap pan over the weekend, I figured I would spend a little time on prepping the LS1 with my Holley swap parts. Today I figured I would install the engine brackets during my lunch break. I removed the driver's side (left) OEM engine bracket first, and when I went to install the Holley engine bracket it wouldn't drop into place without hitting the OEM exhaust manifold. Looks like it would need about 1/16" of clearance to fit with the manifold in place. I thought maybe I mistakenly grabbed the right-side bracket, but I noticed on all of the pics from my searches it confirmed the Holley instructions, indicating the clam shell mount box forward and the flat side of the engine bracket facing up.
I thought I would try loosening up the exhaust manifold to slide the bracket in around the bulge of the exhaust tube to get behind it a little, once in place I pressed the manifold back into place by hand but it was still making contact with the bracket/tab (see pic). Just curious if anybody else has ran across this, or if Vette OEM exhaust manifolds just don't work without clearancing the Holley Engine bracket or some of the cast steel on the manifold?
Then I moved over to the passenger side (right) and couldn't get the bracket to drop in because the AC Compressor/bracket was making contact. I removed the AC compressor and bracket and slid the engine mount into place, no issue with the right-side engine bracket making contract with the OEM exhaust manifold on the right side. I figured I was going to end up buying a mini-AC compressor and bracket by ICT to keep the AC low mount, or possibly go with a high mount AC bracket, as I don't want to notch the frame to retain the AC.
Looking to see if others have run across this issue, or if they had to slightly clearance the engine brackets to fit with OEM exhaust manifolds. I know that Holley states for use with the Black Heart system, but I didn't see anywhere that Holley stated their brackets would NOT work with the OEM AC bracket or OEM manifolds.
Thanks
I thought I would try loosening up the exhaust manifold to slide the bracket in around the bulge of the exhaust tube to get behind it a little, once in place I pressed the manifold back into place by hand but it was still making contact with the bracket/tab (see pic). Just curious if anybody else has ran across this, or if Vette OEM exhaust manifolds just don't work without clearancing the Holley Engine bracket or some of the cast steel on the manifold?
Then I moved over to the passenger side (right) and couldn't get the bracket to drop in because the AC Compressor/bracket was making contact. I removed the AC compressor and bracket and slid the engine mount into place, no issue with the right-side engine bracket making contract with the OEM exhaust manifold on the right side. I figured I was going to end up buying a mini-AC compressor and bracket by ICT to keep the AC low mount, or possibly go with a high mount AC bracket, as I don't want to notch the frame to retain the AC.
Looking to see if others have run across this issue, or if they had to slightly clearance the engine brackets to fit with OEM exhaust manifolds. I know that Holley states for use with the Black Heart system, but I didn't see anywhere that Holley stated their brackets would NOT work with the OEM AC bracket or OEM manifolds.
Thanks