trick flow stage 1, 1.7 rr, and gt40 heads

[5150coupe]

will this combination work? trick flow stage 1, 1.7 rr, and gt40 heads. what is the max lift for gt40 heads with the stock '89 block and pistons? i think this combo is 530/544. will the piston hit? i know of someone who ran a e303 with 1.7 rockers and gt40p heads, but does anyone know someone running the tfs, 1.7, and gt40 heads? i accidently ordered 1.7 rockers already, but didn't order the cam yet. if i have to i can order the e303 cam, but i would rather use the tfs if possible since i think it is a better cam. also, what is the easiest way to check for clearance. please help, thanks.

[rwhite65]

I use to run e7's, with the TFS-1 and 1.7 roller rockers and had no issues with clearance.

[Dark_5.0]

I personaly would run the E303 over the Trick flow stage 1 cam. I have personaly ran a .566/.566 lift 218/224 duration @.050 comp cam with a stock block with stock untouched pistons.

In other words you should be good to go unless the heads are milled down or something.


ALWAYS CHECK PISTON TO VALVE CLEARANCE!!!!!!!!

Do a search I have posted the method many times.

[5150coupe]

Originally Posted by Dark_5.0

I personaly would run the E303 over the Trick flow stage 1 cam. I have personaly ran a .566/.566 lift 218/224 duration @.050 comp cam with a stock block with stock untouched pistons.

In other words you should be good to go unless the heads are milled down or something.


ALWAYS CHECK PISTON TO VALVE CLEARANCE!!!!!!!!

Do a search I have posted the method many times.

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.

[Dark_5.0]

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.

[Coupe50h]

Originally Posted by Dark_5.0

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.

Yep, i remember you saying that before.
So many people bash the e303, but it sounds good imo too, and im happy with my 107-8 mph traps, eventually I'll have to get rid of it, when i do, im going with a comp cam.

[skiwesser]

I would go with the TFS #2 cam, I have AFR 165's and the #1 cam an when we checked P-to-V clerance the valve didn't even touch the clay. The TFS #1 is pretty mild and plenty streetable It pulls hard but I expected more I guess, but I'm pleased with it overall

[5150coupe]

ended up going with the e303 and 1.7's since several people i know have this combination. thanks for your suggestions.