These Exhaust Systems Australia extractors (MPN HOLDEN-HT-HG-V8-SMALL-BLOCK-CHEV-AFR-HEADS-GENIE-HEADERS-EXTRACTORS) are listed to fit the Holden HT/HG with a small-block Chev V8 running AFR heads. They're built around that specific head and engine combination.
What are extractors and what do they change?
Extractors replace the cast exhaust manifolds with tubular primaries into a collector. On a small-block Chev V8 they bolt at the heads, the first stage of the exhaust, with the rest of the system separate. The listing names AFR heads specifically — an aftermarket aluminium head — because header flange and port location follow the head, not just the block. That makes the head spec part of the fitment, not a detail to gloss over. We publish no flow, power or sound figures.
Will it suit my Holden HT or HG?
It's listed for the Holden HT/HG with a small-block Chev V8 on AFR heads. That's a built combination rather than a stock car, so the head match matters as much as the body. Confirm your engine, head spec and any chassis changes with us before ordering, since these older bodies are often heavily modified.
Is it road legal?
These are extractors, not a catalytic converter delete. Road compliance for an engine-converted HT/HG depends on the whole build and NSW requirements, which we'll work through with you. The supplier publishes no approval and we won't claim one.
What does fitting involve at our Illawarra workshop?
Oak Flats Muffler Men fits these in the Illawarra. With a swapped small-block on AFR heads we confirm flange and port match first, then check steering and chassis clearance, fit fresh gaskets and seal the collector. We match the listing to your HT/HG build before booking. RRP is listed at 1155 AUD; fitting is quoted once we've seen the car.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Common questions
Do these only suit AFR heads?
The listing specifies a small-block Chev with AFR heads. Header flange and port location follow the head, so we confirm your head spec before ordering.
Will these fit a standard HT/HG engine?
This listing is for an HT/HG with a small-block Chev V8 on AFR heads. We check your exact engine and head combination first.
Fitment support across the Illawarra
Fitment checks near you across 18 Illawarra suburbs, from Oak Flats and Shellharbour to Wollongong and Kiama.Show nearby fitment areasCollapse section
Oak Flats Muffler Men can check this part against supplier specs, part number, image, RRP and vehicle details for customers around Oak Flats, Shellharbour, Wollongong, Dapto, Albion Park, Kiama and the northern suburbs.
Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.