Trick Flow Heads

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01-01-2021, 03:07 PM

Alan B

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Car: 1983 Trans Am; 1977 Trans Am

Engine: 305 HO; Poniac 400

Transmission: T-5; Turbo 350

Axle/Gears: 3:73, 3:23

Trick Flow Heads

Has anyone installed the Trick Flow heads for the small bore 305? I have a 1983 TA with the 305 HO motor and was considering these. Would like to know if anyone is running them and what kind of performance gains they realized,

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01-01-2021, 03:17 PM

aliceempire

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Car: 92 Firebird, 77 Trans Am SE, 86 Z28

Engine: 5.7 HSR, T/A 6.6, empty

Transmission: T-5, TH350, T-5

Axle/Gears: 3.08 posi, 3.23 posi, 3.23

Re: Trick Flow Heads

I haven't seen them run but your choices for small bore is slim. Holdener did a video on his tests

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01-01-2021, 03:21 PM

Orr89RocZ

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Car: 89 Iroc-z

Engine: 555 BBC Turbo

Transmission: TH400

Axle/Gears: Strange 12 bolt 3.42

Re: Trick Flow Heads

Seen a few builds. One or two guys on here had them on 305 or 334 strokers

richard holdener made some decent power with them, 612 with boost

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01-02-2021, 10:53 AM

Alan B

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Car: 1983 Trans Am; 1977 Trans Am

Engine: 305 HO; Poniac 400

Transmission: T-5; Turbo 350

Axle/Gears: 3:73, 3:23

Re: Trick Flow Heads

Thanks - this is helpful!

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01-02-2021, 05:11 PM

BadSS

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Re: Trick Flow Heads

Quote:

Originally Posted by aliceempire

I haven't seen them run but your choices for small bore is slim. Holdener did a video on his tests https://youtu.be/K8nKXfS6sUA

Those .050 duration and lift specs are for a 268XFI, so is the cam that or the XR274? Maybe it doesn't matter in the grand scheme of things, but I don't think he keeps very good documentation. This is not the first inconsistency with his recollection of or info provided on videos of older build.

That said, I think the TFS 175 heads are great heads for a 305. Helping a friend with a remote build and that's what he ended up going with.

Last edited by BadSS; 01-02-2021 at 05:35 PM.