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89 Cobra LX · 05-16-2002, 08:30 AM

These guys are right, the Cobra cam is a POS.

As far as the P-heads. You're asking for trouble if you don't upgrade the valve springs. I know, I had to. The P-heads were made for the Explorer and Mountaineer. If you've ever driven a 5.0 Explorer you'll know they don't rev well past 5k, let alone 6k. I about died laughing after comparing my new springs with the factory springs.

I'd like to mill my heads for more compression, but I have hyperteuctic (spelling?) pistons. Anyone know how much compression these pistons can take?

05-16-2002, 08:30 AM	#23
89 Cobra LX Don Corlione Join Date: Jun 2001 Location: Omaha NE USA Posts: 491	These guys are right, the Cobra cam is a POS. As far as the P-heads. You're asking for trouble if you don't upgrade the valve springs. I know, I had to. The P-heads were made for the Explorer and Mountaineer. If you've ever driven a 5.0 Explorer you'll know they don't rev well past 5k, let alone 6k. I about died laughing after comparing my new springs with the factory springs. I'd like to mill my heads for more compression, but I have hyperteuctic (spelling?) pistons. Anyone know how much compression these pistons can take? __________________ Eric - 89 Mustang LX coupe 5 speed 302-Cobra Intake-GT40p heads-TFS stage 1 cam-FRPP 1.6 roller rockers-3:73 gears-KYB shocks and struts-Eibach Pro-kit-HPM Mega-bite upper and lower control arms-FRPP aluminum driveshaft-16x8 Chrome Cobra Rs R.H.C. #14