Head Pricing

"HP Stock" Heads.
Performance stock size 35mm intake x 32mm exhaust valve heads.
If your looking to replace your old stock heads with a performance upgrade,
check out our "HP Stock" heads.

"HP Stock" heads come with these features:
* Dual Port type 1 head
* 040 GO1 Auto Linea VW castings.
* Fits without modifications to your stock sheet metal.
* Added material under each rocker stud blocks.
* 3 angle long last, high flow valve job. (most all heads off the shelf come with a single angle valve job)
* Single High-Rev performance long last valve springs for that extra rpm protection.
* Hardened heat treated valve keepers. (stronger than stock keepers).
* Aluminum-Silicone-Bronze long last valve guides.
* Bore open for 85.5, 87, 88, 90.5, 92 or 94mm free!!
* with stock size chambers.
* Oiled and assembled for true bolt-on out of the box set of heads!
$439 pair complete.

You can add to your head order:
* Stainless Steel valves add $60
* Labor, Cut for dual springs and add dual valve springs with chromoly retainers. add $75
* Port off all exhaust guides for turbo use. add $65
* Hand shape chamber. Will chase chamber volume for you to get the correct compression for your combo. add $125
* Hand pocket port intake, exhaust and shape chambers. Match port manifolds, CC one chamber, cut for dual springs, add dual springs & chromoly retainers, shim and setup springs for your cam and rocker combo. add $225

To place your Order click here Or to send off an e-mail with your question: A.J.Sims Heads
Call the shop for all your questions. 714-639-4284

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"HP Big Valve" Heads.
Performance 041 heads with big valve 40mm intake x 35mm exhaust valves.
If your looking to replace your stock heads with a set of larger valve heads check out our "HP Big Valve" Heads.
The "HP Big Valve" are a true performance for an off the shelf performance heads.

"HP Big Valve" Heads come with these features:
* Dual Port type 1 head
* Performance 041 GO3 Auto Linea VW castings.
* Fits without modifications to your stock sheet metal.
* 3/4" reach 12mm spark plug holes moved up and over to give more meat so there is no chance of cracks.
* Thick solid chamber blocks to dissipate heat and if you want to fly cut the chambers a lot, its no problem.
* Solid rocker blocks so you can't pull out the rocker studs like the old days.
* Racer 3 angle long last, high flow valve job. (No cheep single angle valve job with our heads)
* Stainless Steel 40mm intake valve x 35.5mm exhaust valves
* Dual or single High-Rev performance long last valve springs for that extra rpm protection.
* Light weight chromoly 4130 spring retainers (stronger than stock stamp steel retainers)
* Hardened heat treated valve keepers. (stronger than stock keepers).
* Aluminum-Silicone-Bronze long last valve guides.
* Bore open for 85.5, 87, 88, 90.5, 92 or 94mm free!!
* with 50-57cc chambers std.
* Each valve spring is shimmed per your cam and rocker combo for the correct spring pressure.
* Oiled and assembled for true bolt-on out of the box set of heads!
$499.99 pair complete.

You can add to your head order:
* port off all exhaust guides for turbo use add $65
* Hand shape chamber and chase CC numbers for you to get the correct compression for your combo. add $125

To place your Order click here Or to send off an e-mail with your question: A.J.Sims Heads
Call the shop for all your questions. 714-639-4284

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"Turbo Prep" Heads.
Performance 041 castings big valve 40mm intake x 35mm exhaust valves that are set up for turbo use.
If your looking to add one of our turbo kits or one from a diffrent shop than check out our Turbo Prep Heads.

"HP Big Valve Turbo Prep" Heads come with these features:
* Dual Port type 1 head
* 041 GO3 Auto Linea VW castings.
* Fits without modifications to your stock sheet metal.
* 3/4" reach 12mm spark plug holes moved up and over to give more meat so there is no chance of cracks.
* Thick solid chamber blocks to disapate heat and if you want to fly cut the chambers a lot, its no problem.
* Solid rocker blocks so you can't pull out the rocker studs like the old days.
* Racer 3 angle long last, high flow valve job. (No cheep single angle valve job with our heads)
* Stainless Steel 40mm intake valve x 35.5mm exhaust valves
* Performance back-cut of the intake valves for extra intake flow and HP. (Stock or CNC heads don't have this!)
* Dual High-Rev performance long last valve springs for that extra rpm protection.
* Light weight chromoly 4130 spring retainers (stronger than stock stamp steel retainers)
* Hardened heat treated valve keepers. (stronger than stock keepers).
* Aluminum-Silicone-Bronze long last valve guides.
* Bore open for 85.5, 87, 88, 90.5, 92 or 94mm free!!
* Complete hand shaped chamber and chase cc to what your combo needs. (up to 65cc chambers if needed)
* Port off exhaust guides.!! ( on turbos the exhaust guide can get so hot that the guide can flake off and
make its way to your turbo) can you say BOOM!!
* Racer trim the intake guides for more flow and horse power!
* Each valve spring is shimmed per your cam and rocker combo for the correct spring pressure.
* Oiled and assembled for true bolt-on out of the box set of heads!
$569.99 pair complete.

You can add:
* Titanium retainers add $60
* Titanium valves add $600

To place your Order click here Or to send off an e-mail with your question: A.J.Sims Heads
Call the shop for all your questions. 714-639-4284

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"Pocket Port" Heads.
Performance 041 castings big valve 40mm or step up to 42mm intake x 35mm exhaust valves.
This is a popular head for street cars and track turbo combos. The most head for your $$$$.
These heads flow over 145cfm at a low .500" lift and can make over 250hp on turbo combos.
This is a hot street head for turbo combos or off road big motors that want air speed for that low end torque.
If your looking for a hand ported head but don't want to wait on some list or for months at a time
then check out our Pocket Port Heads.

" Pocket Port Heads come with these features:
* Dual Port type 1 head
* 041 GO3 Auto Linea VW castings.
* Fits without modifications to your stock sheet metal.
* 3/4" reach 12mm spark plug holes moved up and over to give more meat so there is no chance of cracks.
* Thick solid chamber blocks to dissipate heat and if you want to fly cut the chambers a lot, its no problem.
* Solid rocker blocks so you can't pull out the rocker studs like the old days.
* Racer 3 angle long last, high flow valve job. (No cheep single angle valve job with our heads)
* Performance back-cut of the intake valves for extra intake flow. Stock or CNC heads don't have this!
* Stainless Steel 40mm intake valve x 35.5mm exhaust valves
* Performance back-cut of the intake valves for extra intake flow and HP. (Stock or CNC heads don't have this!)
* Dual High-Rev performance long last valve springs for that extra rpm protection.
* Light weight chromoly 4130 spring retainers (stronger than stock stamp steel retainers)
* Hardened heat treated valve keepers. (stronger than stock keepers).
* Aluminum-Silicone-Bronze long last valve guides.
* Bore open for 85.5, 87, 88, 90.5, 92 or 94mm free!!
* Hand Pocket Port of the intake ports.
* Match Port of your manifolds to the intake pocket ports.
* complete hand shaped chamber and chase cc to what your combo needs. (up to 65cc chambers)
* Port off exhaust guides.!! ( on turbos the exhaust guide can get so hot that the guide can flake off and
make its way to your turbo) can you say BOOM!!
* Racer trim the intake guides for more flow and horse power!
* Each valve spring is shimmed per your cam and rocker combo for the correct spring pressure.
* Oiled and assembled for true bolt-on out of the box set of heads!
$629.99 pair complete.

You can add to your head order:
* Step up to 42mm intake valve and seats add 125 * Titanium retainers add $60 * Titanium valves add $600
What is Pocket port?
Pocket port is a clean-up port job. This is great for turbo or street motors that
don't need the large ports but want the air speed and to make torque.
They flow over 145cfm @ 25" at .500 lift and have made over 250hp on small turbo motors with low boost.
On 1915cc with 40mm carbs makes avg 120hp and 115tq at the wheels, on a 2110cc with a sing 40mm carbs make 140hp and 160tq, Turbo 1915 200hp and 200tq, turbo 2276cc 256hp and 258tq, turbo 2387cc 300hp 290tq
Tested in our 190hp 230tq pump gas 2054cc turbo car for over 50,000 miles.
2004 SCCA and NASA Solo 2 DM Champion Barret Camper.
2005 SCCA and NASA EM Solo Champion Barret Camper.
2007 Carrera Panamericana Race. #1 VW to finish 3rd over all Barret Camper.

To place your Order click here Or to send off an e-mail with your question: A.J.Sims Heads
Call the shop for all your questions. 714-639-4284

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