big block or small block heater core

[68lovebuzz]

Just curious for those using a factory non AC car's heater box... If my car is a small block car should I switch to a big block heater core for clearance? I'm running autokraft motor mounts. I've heard these mounts leave little room for SB core tubes. Anyone running a LS with factory SB core in a first gen with these mounts ?

Thanks

[68lovebuzz]

Anybody running autokraft mounts? Any info?

[Z06vet]

I ran an ls1 w/small block heater box. I dont recall the mounts I had, but they were not autokraft. Do you know how far the move the motor back? The stock booster has been more a problem for me than the heater box.
Scott

[neki67]

I use Hooker mounts but I believe they set the engine as far back as the Autokraft's. It's very, very thight at the heater core. I had to bent the outlets and it's still tight.

If you have the opportunity I would advise to either go BB heater or turn the current heater core 180*; http://www.camaros.net/forums/showthread.php?t=158672

https://static1.pt-content.com/images/pt/2012/12/imagesqtbnANd9GcTYfTPRmbU_QQQ41XWnSPXztS-1.jpg

[68lovebuzz]

Thanks so much Rene! Just the information I was looking for. Thanks to you Scott just the same.

[130fe]

Brian, if you decide to switch to a big block heater core, let me know. I have an old one that I am not going to use anymore (swapped to vintage aair).