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big cams with the stock efi manifold be careful not to wast your money go for nothing bigger than 230@50

^^^^ not true Arkas black head short turn area much better than a blue but blacks are more prone to crack.

Hervey Bay mate and the tuner is Jarretts Performance and Dyno Tuning in Maryborough. Ours is a speedway engine but our rules are pretty tough and head has to be stock and only hyd cam no roller rockers and only allow to balance in factory locations .

Leave stock add a haltech computer and bigger injectors and fuel pump and watch her go . Ours made 161rwhp on 98 fuel and a good dyno tuner.

Hey Guys Wanting to get opinions on what cam to use for a 202 back motor used for speedway . Engine has an VK EFI system with magna injectors with a Haltech F10X management system . In our rules cams are open but the cylinder head is not allowed any porting or rollers but all...

Probley to much cyl pressure to early, maybe a slighly bigger cam will bleed off some pressure. We had the same problem but with a straight 6 and the main prob the tuner found was we were reving it to hard so we reduced the overall rear gear from 7.07 down to 6.83 and seemed to solve our...

Fixed the spark problem and then found that the computer has corroaded inside obviuosly was sitting in water at some stage . Also the tacometer relay is only drawing 2 volts and not drawing the relay open so getting another puter tomorrow.

Hooked up the efi all stock , fuel pump working have power by the test light but have no spark at the plugs any help guys

Hey Scott its not the gas ports its the inside of the manifold at the injectors . Looks like it will squirt fuel straight at the top of the inlet port of the head.

Hey revheads just putting a 6 cyl vk efi setup onto our streety speedway car and the head thats on the engine is from a carby black engine . My question is i noticed on the injection that it has abit removed from around the injectors in the manifold and do i have to mod the head to suit ? Also...

I'm chasing one of these older ones if someone has one to sell let me no please. Dave