trick flow stage 1, 1.7 rr, and gt40 heads

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Originally Posted by 5150coupe

so why to you say use the e303 over the tfs? most people like the tfs. i like the sound of the e303 better, and i heard that the gt40 heads only gain power to .500 lift, so the e303 would be fine. then again, i plan on purchasing a set of afr 165 heads later, so maybe the tfs cam will work better considering future upgrades.

Let me put it this way. My old set-up was Canfield aluminum heads that flowed about 270cfm out the box, a ported cobra intake and an E303 cam. I put down 308RWHP and 332RWTQ totaly untuned. I was running mid 12's all day long at 4000+ft of altitude and running 108-109mph in the 1/4. I thought I must be leaving some HP on the table with the E303 cam. I spent the big bucks, 325 bux to be exact on a FTI Ed Curtis custom ground camshaft .566/.566 lift and 218/224 duration and really didnt notice much if any gains over the E-303 cam.

The E303 cam can present problems such as Idle surge and low vacuum on some cars but it is an excellent performer.

If I were choosing a cam for a car with GT-40 heads I would probably go with the B-303 cam or just leave the stock cam in there with 1.7 roller rockers.

The GT40 heads are better than E7's but not buy a whole bunch.