Cam suggestions???

[Mr. Land Yacht]

I'm going to be seriously building up my motor and I'm tryig to decide on a cam...
I was going to put in the Ford Racing E303 cam, but I'm wondering if I'd get a better increase in power if I got a cam with a higher duration...
the E303 cam is .498 lift and 220 duration...
any other cam suggestions?

(note: I am converting to MAF, putting in valve relief pistons and adding on 1.7 roller rockers)

[turbo2256b]

FI dosent like high duration a lot. Would be better to concider having the heads ported. FI seems to responnd better to increased air flow but you have to go to bigger injectors better fuel pump. Adjustable fuel opressure regulator. Bigger fuel rail. By the time your all done its cheeper to go carb ot throttle body aftermarket kits.

[gadget73]

Yeah, you'll get an awful lot of power from head work alone, and a cam would compliment that very nicely.

[Mercracer]

E303 is all the cam that you need.
With more cam, you have to be willing to run steep gears and a loose converter. With the price of gas, it doesn't make sense unless you are making your car into a 1320 vehicle.

[turbo2256b]

Porting your heads properly is like a 100 to 150 NOS shot. With a mild cam or even a stock one economy and performance can be achieved. A high stall torq converter isnt needed lower geaars arnt required. My 84 Mustang 302 carb would turn 12.2 quarters with 3.08 rear gears and aa T5. The heads on it were just pocket ported. Pulled 26 to 28 MPG on the hiway. These are the same heads I have on the dual quad motor close to fully ported now.

[Mercracer]

Porting your heads properly is like a 100 to 150 NOS shot. With a mild cam or even a stock one economy and performance can be achieved. A high stall torq converter isnt needed lower geaars arnt required. My 84 Mustang 302 carb would turn 12.2 quarters with 3.08 rear gears and aa T5. The heads on it were just pocket ported. Pulled 26 to 28 MPG on the hiway. These are the same heads I have on the dual quad motor close to fully ported now.

Sorry dude...
You are leaving something out of your groovy story. 12.2's = :bs:


You can NOT get a 100HP gain out of porting factory heads or even GT-40(p)alone.

[Mr. Land Yacht]

how much do you guys think I would gain if I had gt40 heads ported?
I might send off my upper intake, lower intake and GT40 heads off to TMoss and have him port them...

[turbo2256b]

how much do you guys think I would gain if I had gt40 heads ported?
I might send off my upper intake, lower intake and GT40 heads off to TMoss and have him port them...

You can have that done at my shop locally here in Canton.

[Mr. Land Yacht]

hey cool!
you're not gonna charge me out the ass, are ya?
how much would you want?

[turbo2256b]

Sorry dude...
You are leaving something out of your groovy story. 12.2's = :bs:


You can NOT get a 100HP gain out of porting factory heads or even GT-40(p)alone.

Had a .530 lift solid cam, headers, 750 Holley, VrJr intake. These heads were also only pocket ported. With less cam than above I will pull 430+HP with almost fully ported heads.

Air flow from properly shaping cylinder heads and proper blending seats and valve seat angles will put stock heads air flow at low lift numbers much higher than any cam or such will accomplish. Big issue is how much you will spend on SEFI parts to take advantage of the increased air flow. Your big port heads even the GT40s the port volums are too big and torq is lost as air speed is low. The best head for a 302 is the old 351W ported. E7 ported are about the next best. I have done this 100s of times.

[Mercracer]

With less cam than above I will pull 430+HP with almost fully ported heads.
Your big port heads even the GT40s the port volums are too big and torq is lost as air speed is low. The best head for a 302 is the old 351W ported. E7 ported are about the next best. I have done this 100s of times.

Please....Just quit it.... :bs:

The GT40 and early 351W intake port configuration and size is nearly identical. The exhaust port is very close. The 351W was choked by a much larger smog hump. Once that is removed and cleaned up, you have nearly the same exhaust port.

[Mr. Land Yacht]

guys, turbo2256b is telling me that ported/decked E7's are much better than GT40's.
I have heard this before...how much better can they be over GT40's? 15hp?20 hp?

[turbo2256b]

Please....Just quit it.... :bs:

The GT40 and early 351W intake port configuration and size is nearly identical. The exhaust port is very close. The 351W was choked by a much larger smog hump. Once that is removed and cleaned up, you have nearly the same exhaust port.

GT40s are around 170cc the 351w are around 155 if I remember correctly. I bet you dont have a flow bench in your garage and have been porting heads since 1965. My shop designed the Brodex 18X heads.

[Mercracer]

My shop designed the Brodex 18X heads.

Brodix....

[Mercracer]

GT40s are around 170cc the 351w are around 155 if I remember correctly.

Apparently, your memory has failed you miserably. The iron GT40 head is only in the upper 140's to low 150's for intake port volume. The Aluminum Y303 head is only near 160cc's.