i wasn't sure which one to post in, so i picked this one. yes, we need to see the dyno sheet. there are several problems at first sight.
^ That's where I'd start.I would upgrade your valve springs as they are already maxed out with the z cam your running.
Here's your problem list:I'm just wondering why my combo is only make power to 5100 rpms and only 318rwhp
only problem with going to TFS heads now is he would either have to replace to pistons or possibly fly cut the pistons.Here's your problem list:
Patriot Performance 185cc heads 2.02/1.6
Z 303 Camshaft
Trick Flow Track Heat Intake w/ 1/2" heat spacer
If you want to make some meaningful power (like 400+rwhp) I suggest you go for the following:
TEA ported TFS 205cc heads
CompCams XE274HR-12 cam or custom
TFS R intake