LS3 Cylinder Head clearance to dash
09-23-2018, 10:13 PM
#1
Intermediate
Thread Starter
LS3 Cylinder Head clearance to dash
Looking for “suggested” clearance between LS3 cylinder head and dash. Would any of you who have completed this swap in either a C1 or C2, please provide input on the clearance you have and comment on whither you still feel that the distance was adequate?
Thanks in advance
Jeff
Thanks in advance
Jeff
09-24-2018, 09:45 AM
#3
Melting Slicks
Did you use after market LS motor mount relocation plates to relocate LS engine forward to match that of stock engine location? This would only apply to C1/C2s mounted on a stock frame or aftermarket frame not built for for an LS engine installation.
Holly/Hooker Headers as well as others sale them.
Last edited by Poorhousenext; 09-24-2018 at 09:47 AM.
09-24-2018, 10:57 AM
#5
Looking for “suggested” clearance between LS3 cylinder head and dash. Would any of you who have completed this swap in either a C1 or C2, please provide input on the clearance you have and comment on whither you still feel that the distance was adequate?
Thanks in advance
Jeff
Thanks in advance
Jeff
I installed an LS3 in a '63 convertible in a stock frame using Dirty Dingo mounts. For me, the position of the engine was dictated by the location of the TKO500 transmission/shifter to utilize the original shifter location. All this places the rear of the heads closer to the firewall than I would have liked but it has not seemed to be a problem. It is hard to measure, but the passenger side is about 1" clear and the driver side is about 2" clear. But the rearward location does provide more clearance on the front of the engine!
Jon
09-24-2018, 04:19 PM
#6
Racer
Bruce,
Did you use after market LS motor mount relocation plates to relocate LS engine forward to match that of stock engine location? This would only apply to C1/C2s mounted on a stock frame or aftermarket frame not built for for an LS engine installation.
Holly/Hooker Headers as well as others sale them.
Did you use after market LS motor mount relocation plates to relocate LS engine forward to match that of stock engine location? This would only apply to C1/C2s mounted on a stock frame or aftermarket frame not built for for an LS engine installation.
Holly/Hooker Headers as well as others sale them.
09-24-2018, 06:09 PM
#7
Mine is close, probably an inch or so. As others have said, placing the engine in the "stock location" makes it tight to the rear, this is where a muncie/tko bolted to it via a 621 clone bell housing will end up in the same location as with SBC. I haven't had any issues, it's a bit of a pain neatly routing or hiding the harness around the rear of the engine due to lack of space, but very doable. Having the engine back as far as possible makes a *lot* of room at the front and also helps the car turn !
09-24-2018, 08:53 PM
#8
Intermediate
Thread Starter
I’d like to thank everybody for their reply.
My takeaway; If I maintain at least 1 inch between the cylinder head and the fiberglass I shouldn’t have an issue with heat off the heads.
Jeff
My takeaway; If I maintain at least 1 inch between the cylinder head and the fiberglass I shouldn’t have an issue with heat off the heads.
Jeff