I am a newbie here and currently drive Airtrek Turbo. I am thinking of replacing the stock cams with EVO 7 or 8 camshafts.
The stock Airtrek-T camshafts have a smaller lifts at 8.5 and steel material. I need advice on whether I need to replace the valve spring if I go for higher lifts EVO 7 or 8 camshafts?
The Evo 7/8 stock camshafts are hollow cams therefore lighter. I read that most Evo 7/8 in US do not replace their valve springs using camshafts with HKS 264.
Help!
The stock Airtrek-T camshafts have a smaller lifts at 8.5 and steel material. I need advice on whether I need to replace the valve spring if I go for higher lifts EVO 7 or 8 camshafts?
The Evo 7/8 stock camshafts are hollow cams therefore lighter. I read that most Evo 7/8 in US do not replace their valve springs using camshafts with HKS 264.
Help!