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Old 04-08-2013, 01:01 AM   #1
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GT-40 intake

Does any have an idea what kinda power gains I'll get by bolting on a gt 40 intake??
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Old 04-08-2013, 07:22 AM   #2
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Does any have an idea what kinda power gains I'll get by bolting on a gt 40 intake??
10-15 fly wheel horse , but once you have matching heads and cam will could see 20-25
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Old 04-08-2013, 10:16 PM   #3
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10-15 fly wheel horse , but once you have matching heads and cam will could see 20-25
It's a little more than then that. They have cars dynoing close to hp 300hp with gt40 heads and intake, and a FRPP cam.
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Old 04-08-2013, 11:07 PM   #4
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I also have 70mm throttle body 75mm maf and 24lbs injectors
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Old 04-09-2013, 05:39 AM   #5
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It's a little more than then that. They have cars dynoing close to hp 300hp with gt40 heads and intake, and a FRPP cam.
Yes but you need all other supporting mods to get the max horsepower from the gt40 intake
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Old 04-09-2013, 06:48 AM   #6
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Originally Posted by 93slowstang View Post

It's a little more than then that. They have cars dynoing close to hp 300hp with gt40 heads and intake, and a FRPP cam.
Agreed, if you have a good set of heads to go with it and your other mods, I've seen some put down more than 300 rwhp with proper tubing and cam choice.

I know you listed TB, and 24lb injectors... Stock heads?

---------- Post added at 04:48 AM ---------- Previous post was at 04:47 AM ----------

Tuning, I hate auto fill
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Old 04-09-2013, 09:18 AM   #7
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I also have 70mm throttle body 75mm maf and 24lbs injectors

---------- Post added at 10:18 AM ---------- Previous post was at 10:17 AM ----------

Yes heads are stock for now but plan on getting the gt-40p heads.
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Old 04-09-2013, 10:09 AM   #8
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Good plan. I've seen guys who have tuned their combo with untouched GT40p motors out of explorers, with 24lb injectors and upgraded intake, Tb, MA, cam, and exhaust push 300rwhp and more.

I've got a set of untouched gt40p's going on my fox also.
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Old 04-09-2013, 10:31 AM   #9
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Does any have an idea what kinda power gains I'll get by bolting on a gt 40 intake??
Don't be fooled by people out there selling the gt40 they are pretty rare everyone seems to think there intakes a gt40 so just do a little research when looking to buy one my buddy bought one an when he got it home and showed me is was a stock 5.0 intake off of a fox lol he didn't know any better do just watch out for those people trying to make a quick buck
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Old 04-09-2013, 10:35 AM   #10
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Don't be fooled by people out there selling the gt40 they are pretty rare everyone seems to think there intakes a gt40 so just do a little research when looking to buy one my buddy bought one an when he got it home and showed me is was a stock 5.0 intake off of a fox lol he didn't know any better do just watch out for those people trying to make a quick buck
Wow! That's crazy!!
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Old 04-09-2013, 10:36 AM   #11
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Wow! That's crazy!!
He's not too smart haha but they have a distinct appearance difference too he didn't know
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Old 04-09-2013, 10:38 AM   #12
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He's not too smart haha but they have a distinct appearance difference too he didn't know
Very true! And now that FR no longer makes the cobra intake again, expect the prices on the GT40 tubular intake and explorer intakes to go up!
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Old 04-09-2013, 11:32 AM   #13
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What cam should I run I was thinking trick flow stage 1
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Old 04-09-2013, 11:38 AM   #14
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What cam should I run I was thinking trick flow stage 1
I have a x303 it sounds really good but the TF stage 1 have a great sound an matched with the right heads both can make good power I would go with the TF stage 1 never heard anything bad about them I just got a great deal on the x303 an it working great with my edelbrock heads an intake don't know dyno numbers yet...
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Old 04-09-2013, 11:39 AM   #15
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I have 1.7 rockers also
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Old 04-09-2013, 12:00 PM   #16
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I always thought the FRPP E cam went well with a GT40 motor. I've seen quite a few GT40 foxes put down around 280 rwhp with a stock gt40 top end, e cam, 1.7 roller rockers (which are practically required for a new cam with stock gt40 heads) and all the stock stuff off their old 5.0 e7 motors.
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Old 04-09-2013, 12:05 PM   #17
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Yeah, I also haven't heard any bad reviews on the TF stage one, and with 1.7's you should pick up good power and the sound will be awesome.
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Old 04-09-2013, 12:13 PM   #18
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That's awesome. Stage one it is thanks guy!!
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Old 04-09-2013, 12:23 PM   #19
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If your going 1.7 with stage 1 cam make sure you check your piston to Valve clearance
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Old 04-09-2013, 12:28 PM   #20
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Good point! And also don't forget to look at valve spring upgrades.
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Old 04-09-2013, 09:17 PM   #21
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Plan on going with bigger valve springs. But will valve Clarence really be an issue?? How much more lift will I get
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Old 04-09-2013, 10:00 PM   #22
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Plan on going with bigger valve springs. But will valve Clarence really be an issue?? How much more lift will I get
If he is runnin stock pistons you never know but the trickFlow stage 1 Cam with 1.7 your lift is , .542 / .530
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Old 04-10-2013, 12:28 AM   #23
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How would I check the valves??
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Old 04-10-2013, 05:12 AM   #24
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Pull your heads off , clean up your pistons and put clay on them then heads back on Nd hand turn the motor , if the valves hit you'll know or you'll see it in the clay!
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Old 04-10-2013, 09:55 AM   #25
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Might be better off running 1.6 rockers huh??
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Old 04-10-2013, 10:24 AM   #26
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Might be better off running 1.6 rockers huh??
To save a headache id go with 1.6
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Old 04-11-2013, 01:02 PM   #27
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I have a 97 gt40 motor and Im running the F303 and the lift for it is 0.512 and I'm running trick flow 1.6 rockers (stock spec) and I have perfect PTV clearance but I did also upgrade to some dual valve springs as well but I BELIVE long as your cam is not bigger than .512 and have 1.6 or 1.7 rockers u won't have to get your pistons notched....
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