ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

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Old Sep 14, 2022 | 03:33 PM
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ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump. Also would be interested in a complete swap but mainly the crossmember since that’s the only part I cannot fabricate and look original.

I am building a true clone and I am down to the last couple unicorn parts. Any help would be greatly appreciated.

let me know what you have. i also have lots of nos and rare hard to find parts to trade and make a deal.
Please text or pm me my number is 612-860-2513






Last edited by firebirddude142; Sep 14, 2022 at 03:41 PM.
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Old Sep 16, 2022 | 02:17 PM
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88 350 tpi formula's Avatar
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Re: ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

I bet you could take a 200R4 crossmember or two and with some careful cutting and welding to merge the shapes you could make it look exactly like that. no doubt it will take some real work with the welder and grinder but it has the general look
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Old Sep 16, 2022 | 04:40 PM
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Re: ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

Originally Posted by 88 350 tpi formula
I bet you could take a 200R4 crossmember or two and with some careful cutting and welding to merge the shapes you could make it look exactly like that. no doubt it will take some real work with the welder and grinder but it has the general look
yeah a tta one is similar and it could possibly be done but I rather find one I know they are out there.
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Old Oct 10, 2022 | 09:37 PM
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Re: ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

Still searching!!! Need them to complete my zf swap for my firehawk clone. Last parts needed. Already have t ram, dual intake(nos), wheels totl(nos), tri ys complete with dual cats, Recaro seats, aluminum hood, correct battery cable, correct spark plug wires, and the correct BREMBOS!




Last edited by firebirddude142; Oct 10, 2022 at 09:44 PM.
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Old Nov 30, 2025 | 05:19 AM
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Re: ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

Question: what modifications, i.e. what welding and cutting is required if one was to use the C4 bellhousing?




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Old Nov 30, 2025 | 08:22 AM
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Re: ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

Originally Posted by 3R1$C
Question: what modifications, i.e. what welding and cutting is required if one was to use the C4 bellhousing?




A lot due to the clutch type and hydraulics setups
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Old Nov 30, 2025 | 02:07 PM
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Re: ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

Stick to an aluminum version instead of mag.
The Quicktime for LS is steel.
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Old Jan 8, 2026 | 08:40 AM
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Re: ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

Originally Posted by jmd
Stick to an aluminum version instead of mag.
The Quicktime for LS is steel.
I actually already have the correct bellhousing now I just really need the crossmember
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Old Jan 8, 2026 | 07:11 PM
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Re: ISO Firehawk ZF s6-40 6 speed crossmember and trans tunnel hump

Don't let "correct" stop you now! Steel is too easy to work with to not put something together as a cross member.
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