GT-40 or Cobra or???

02-26-2001, 09:27 AM

Building my car right from the beginning!?
Future plans... Ford GT 40 X 64cc heads, E-cam, 190 l/h pump, Hurst shifter, 19-24 injectors?, 1,6 or 1,7/1,72 rockers, 65-70mm trottle body and a compressor Vortech s-trim or a procharger. My first mods from this list is intake....Or should I go with trickflow...or edelbrock.....?

------------------
-87 GT, K&N, 5-speed, Walker exhaust, no air silencer. timing
75000miles. (This vinter 3,55 and mac 15/8 and H-pipes and a Hurst shifter)
14,61 and 95,59mph

SaleenGTS · 02-26-2001, 09:58 AM

TFS...higher flow out of the box and capability...can't port thr GT-40, and the cobra has a restrictive EGR.

------------------
Dustin
1993 Cobra #1926

Bassani Full lengths,Bassani short X-pipe, American thunder Cat back, 3.55's. More to come...

84_GT350 · 02-26-2001, 02:29 PM

I like the new Holley/Weiand EFI manifolds. They make the best power out of anything I've seen. Well...the Holley does anyhow. Haven't seen any tests on the Weiand, but they look exactly the same. Trick Flow makes good stuff too.

------------------
1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

8850 · 02-26-2001, 03:13 PM

I ran an 11.384 n/a with a ported Cobra. I had the EGR ported out and the opening bored to 75mm. Lower was gasket matched to a 1262 Fel Pro.

------------------
88 347, Twisted wedge heads,Comp Cams 224/230 cam, 1/4=10.718 @ 123.02 mph,dyno= =http://www.fbody.com/members/LarryS/mustdyno.jpg

cleanLX · 02-27-2001, 04:28 PM

i believe the cobra/GT40 to be excellent choices for a N/A application, but I am quite sure that with your plans of a blower you are going to want more plenum area, which makes an intake such as the Holly or something similar a better choice. When N/A velocity is a big part of the game, making large plenums not so desirable. With a blower you pretty much have the velocity taken care of and now you are looking for volume.
I'm sure someone can explain this much better...
Good luck

------------------
'92 emerald coupe, no air silencer, bored stock MAF to 60mm, sub-frames welded, strut tower brace, 180 thermo, 16 deg's, K'n'N panel, bosh platniums, u.d. pullies, off road h-pipe, hurst "stir stick", fms 3.73's. otherwise, factory original.
best 1/4 = 13.264@ 100.89mph with a 1.824 60 ft. on turbines with 235/60-R15 BFG DR's

302man · 02-27-2001, 04:58 PM

I like the GT-40 intake. It works great on my car. On a chassis dyno, I made 520rwtq at 3000 rpm ! Most test will show that the GT-40 out flows even the Holly until 5500 rpm. From what I know, moist guys don't go past 6000 rpm . The majority of their time is below 6000 rpm so I think even with a charger, the GT-40 is my choise. I did a test at the race track, with more low end, I was faster in ET, with more top end, I was faster in MPH but lost my et. I changed my combo back to ET. If this car is mainly a race car, look into a Holly. If its a street car with an occasional race, the GT-40 will give you more torque.

------------------
302,vortech s trim @18-20lbs showing,edelbrock performer heads-o ringed,gt 40 upper&lower, mac 1 5/8"long tubes, sub frame connectors,50/50 rear, 70/30 front, manual rack,3:55 gears, c4 , best time 10.13@135mph

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02-26-2001, 09:27 AM	#1
joakim Guest Posts: n/a	GT-40 or Cobra or??? Building my car right from the beginning!? Future plans... Ford GT 40 X 64cc heads, E-cam, 190 l/h pump, Hurst shifter, 19-24 injectors?, 1,6 or 1,7/1,72 rockers, 65-70mm trottle body and a compressor Vortech s-trim or a procharger. My first mods from this list is intake....Or should I go with trickflow...or edelbrock.....? ------------------ -87 GT, K&N, 5-speed, Walker exhaust, no air silencer. timing 75000miles. (This vinter 3,55 and mac 15/8 and H-pipes and a Hurst shifter) 14,61 and 95,59mph

02-26-2001, 09:58 AM	#2
SaleenGTS RICE taste like Chicken Join Date: Jun 2000 Location: Edmond, OK Posts: 687	TFS...higher flow out of the box and capability...can't port thr GT-40, and the cobra has a restrictive EGR. ------------------ Dustin 1993 Cobra #1926 Bassani Full lengths,Bassani short X-pipe, American thunder Cat back, 3.55's. More to come...

02-26-2001, 02:29 PM	#3
84_GT350 Registered Member Join Date: Apr 1999 Location: Overland Park, KS, USA Posts: 1,631	I like the new Holley/Weiand EFI manifolds. They make the best power out of anything I've seen. Well...the Holley does anyhow. Haven't seen any tests on the Weiand, but they look exactly the same. Trick Flow makes good stuff too. ------------------ 1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

02-26-2001, 03:13 PM	#4
8850 Registered Member Join Date: Nov 1998 Location: Sugarland, TX USA Posts: 161	I ran an 11.384 n/a with a ported Cobra. I had the EGR ported out and the opening bored to 75mm. Lower was gasket matched to a 1262 Fel Pro. ------------------ 88 347, Twisted wedge heads,Comp Cams 224/230 cam, 1/4=10.718 @ 123.02 mph,dyno= =http://www.fbody.com/members/LarryS/mustdyno.jpg

02-27-2001, 04:28 PM	#5
cleanLX Registered Member Join Date: Aug 2000 Location: Phoenix Az. by way of fredericton, NB Canada Posts: 73	i believe the cobra/GT40 to be excellent choices for a N/A application, but I am quite sure that with your plans of a blower you are going to want more plenum area, which makes an intake such as the Holly or something similar a better choice. When N/A velocity is a big part of the game, making large plenums not so desirable. With a blower you pretty much have the velocity taken care of and now you are looking for volume. I'm sure someone can explain this much better... Good luck ------------------ '92 emerald coupe, no air silencer, bored stock MAF to 60mm, sub-frames welded, strut tower brace, 180 thermo, 16 deg's, K'n'N panel, bosh platniums, u.d. pullies, off road h-pipe, hurst "stir stick", fms 3.73's. otherwise, factory original. best 1/4 = 13.264@ 100.89mph with a 1.824 60 ft. on turbines with 235/60-R15 BFG DR's

02-27-2001, 04:58 PM	#6
302man Registered Member Join Date: Jul 1999 Location: INDIANAPOLIS Posts: 404	I like the GT-40 intake. It works great on my car. On a chassis dyno, I made 520rwtq at 3000 rpm ! Most test will show that the GT-40 out flows even the Holly until 5500 rpm. From what I know, moist guys don't go past 6000 rpm . The majority of their time is below 6000 rpm so I think even with a charger, the GT-40 is my choise. I did a test at the race track, with more low end, I was faster in ET, with more top end, I was faster in MPH but lost my et. I changed my combo back to ET. If this car is mainly a race car, look into a Holly. If its a street car with an occasional race, the GT-40 will give you more torque. ------------------ 302,vortech s trim @18-20lbs showing,edelbrock performer heads-o ringed,gt 40 upper&lower, mac 1 5/8"long tubes, sub frame connectors,50/50 rear, 70/30 front, manual rack,3:55 gears, c4 , best time 10.13@135mph