What EFI setup for 427 Stroker

Cameron · 02-07-2004, 07:56 PM

any ideas for a good EFI setup on an 427 stroker. What size injectors, MAF, throttle body, what intake, etc.
thanks

Skyman · 02-08-2004, 12:48 PM

If it was mine, I'd run 9.5:1 compression, ported TFS TW heads with a holley systemax intake and a 75mm TB. 30LB Injectors and a 255lph fuel pump. Probalby a custom cam or something nice if I was going to invest that much in a motor.l

Cameron · 02-08-2004, 12:59 PM

what if i decide to run a single turbo. my problem is i don't know much about running a turbo, so all the help is appreciated. i am going to start researching turbos. any ideas on a good setup?

420nitro · 02-08-2004, 01:23 PM

I was looking at that myself before I went carb.
For that size cubes, it needs a large intake runner head like a Afr 225 or a TFS-R head. Volume is more important then flow numbers at that this point, due to the fact that both heads flow well over 300 cfm @.600 lift out of the box, more then enough to feed a 500 horse N/A small block. Kind of hard, but reachable with a fully ported out twisted wedge head and A L O T cheaper too!
Not to mention needing larger valves.

Then a fully ported lower intake with an Upper to match. What ever intake you get, you will need the intake manifold to flow about 15-20 percent more then the heads at the throttle body! I believe that TFS came out with a upper that has a 90 mm opening. And a 90mm throttle body. It also might be someone elses intake but you get the idea. As goes for the MAF I would get one from Pro-M.
Then a custom grind cam, because I don't believe there is going to be a big enough hyd. roller you can get, that is off the shelf.
(246-250+@.50) on the intake side with the TFS and less with the AFR head.
As goes for injecter I would say either a 30 or 36 pound injector. Dont forget that you will will need a large exhust to go with it too.(3-3.5 should be plenty. with a header in the 1 3/4 to 1 7/8)
All of the above should put you in the relm of a 6000-6300 shift point on a 10.5 to 1 on pump gas

.

You will also need a programable computer to tune the car in.

Thanks,... I now remember why I just said the hell with it and ran a carb!!

Good luck with yours.

88workcar · 02-08-2004, 04:37 PM

I just finished the same debate. I am going with a 331. 450hp, and I think it will be a carb. I currently have FI, but I will need 36lb injectors, mas air meter, new computer, fuel pump, new intake, TB, and all else. It will be cheaper to carb.

Cameron · 02-08-2004, 10:03 PM

i have a strong 351, but was thinking about dumping it for something more. i am running a victor jr. with a 750 speed demon. i may just keep the intake and carb and sell the rest. the motor has maybe 250 miles on it. just doesn't have what i want. maybe i am getting greedy, but hey i am always looking for more.

jonnyk · 02-09-2004, 10:58 AM

Coast High Super Spyder intake no question. Don't fool around with long runner intakes, it's a waste of time with that many cubes.
Add a 90mm throttle body to the mix.
MAF should be equally as large.
Injectors will depend on your expected power level, based on heads, cam, etc. Probably a 36# or 42# injector.

302 LX Eric · 02-09-2004, 11:44 AM

Quote:

Originally posted by 88workcar
I just finished the same debate. I am going with a 331. 450hp, and I think it will be a carb. I currently have FI, but I will need 36lb injectors, mas air meter, new computer, fuel pump, new intake, TB, and all else. It will be cheaper to carb.

88 - just curious as to why you would go with 36# injectors? I currently have 24# injectors on my 10:1 331 combo and have debated about going up to 30# injectors. In fact, Rick Anderson of Anderson Ford Motorsport strongly suggested that I ditch the 24's and step up to a 30# unit. I'm just curious. Thanks in advance!

E

PS - Cameron - sorry to hi-jack your thread.

88workcar · 02-10-2004, 06:12 AM

450 - 500hp, plus NOS = 36lb injectors. This is also why I will carb.

302 LX Eric · 02-10-2004, 08:39 AM

Sorry, I just re-read your post up above a few spaces and see that you mentioned the 450hp number. Nevermind.

E

jonnyk · 02-10-2004, 10:32 AM

Remember when you convert to carb, you have to buy a new pickup, fuel pump, adapters for the line, regulator, the carb itself, a carb intake, and fab a new throttle linkage setup. IMO they're not cheaper...but on a drag car it makes sense. I would never do it on a street car.

02-07-2004, 07:56 PM	#1
Cameron Registered Member Join Date: Aug 2002 Location: Ohio Posts: 39	What EFI setup for 427 Stroker any ideas for a good EFI setup on an 427 stroker. What size injectors, MAF, throttle body, what intake, etc. thanks __________________ 2002 GT stock 1992 GT carbed 351

02-08-2004, 12:48 PM	#2
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	If it was mine, I'd run 9.5:1 compression, ported TFS TW heads with a holley systemax intake and a 75mm TB. 30LB Injectors and a 255lph fuel pump. Probalby a custom cam or something nice if I was going to invest that much in a motor.l __________________ 2001 BMW M3 6spd 12.79@108 RIP ---- 1993 Notch w/ 98 4V 4.6 Fasttt... -1989 Saleen Mustang #406- 12.32@109 -1999 Black Cobra Coupe- JBA Shorties, Bassani Cat-X, Magnaflow 3", Pulleys, 85mm Pro-M, Ported Intake, Soild Rear w/ 4.30s, Tubular Front End, X2C arms, 13lb batt, few others.

02-08-2004, 12:59 PM	#3
Cameron Registered Member Join Date: Aug 2002 Location: Ohio Posts: 39	what if i decide to run a single turbo. my problem is i don't know much about running a turbo, so all the help is appreciated. i am going to start researching turbos. any ideas on a good setup? __________________ 2002 GT stock 1992 GT carbed 351

02-08-2004, 04:37 PM	#5
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	I just finished the same debate. I am going with a 331. 450hp, and I think it will be a carb. I currently have FI, but I will need 36lb injectors, mas air meter, new computer, fuel pump, new intake, TB, and all else. It will be cheaper to carb. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

02-08-2004, 10:03 PM	#6
Cameron Registered Member Join Date: Aug 2002 Location: Ohio Posts: 39	i have a strong 351, but was thinking about dumping it for something more. i am running a victor jr. with a 750 speed demon. i may just keep the intake and carb and sell the rest. the motor has maybe 250 miles on it. just doesn't have what i want. maybe i am getting greedy, but hey i am always looking for more. __________________ 2002 GT stock 1992 GT carbed 351

02-08-2004, 01:23 PM	#4
420nitro Registered Member Join Date: Nov 2003 Location: Rockford Posts: 596	I was looking at that myself before I went carb. For that size cubes, it needs a large intake runner head like a Afr 225 or a TFS-R head. Volume is more important then flow numbers at that this point, due to the fact that both heads flow well over 300 cfm @.600 lift out of the box, more then enough to feed a 500 horse N/A small block. Kind of hard, but reachable with a fully ported out twisted wedge head and A L O T cheaper too! Not to mention needing larger valves. Then a fully ported lower intake with an Upper to match. What ever intake you get, you will need the intake manifold to flow about 15-20 percent more then the heads at the throttle body! I believe that TFS came out with a upper that has a 90 mm opening. And a 90mm throttle body. It also might be someone elses intake but you get the idea. As goes for the MAF I would get one from Pro-M. Then a custom grind cam, because I don't believe there is going to be a big enough hyd. roller you can get, that is off the shelf. (246-250+@.50) on the intake side with the TFS and less with the AFR head. As goes for injecter I would say either a 30 or 36 pound injector. Dont forget that you will will need a large exhust to go with it too.(3-3.5 should be plenty. with a header in the 1 3/4 to 1 7/8) All of the above should put you in the relm of a 6000-6300 shift point on a 10.5 to 1 on pump gas . You will also need a programable computer to tune the car in. Thanks,... I now remember why I just said the hell with it and ran a carb!! Good luck with yours.

02-09-2004, 10:58 AM	#7
jonnyk Being stroked is great Join Date: Oct 1998 Location: Alberta, Canada Posts: 772	Coast High Super Spyder intake no question. Don't fool around with long runner intakes, it's a waste of time with that many cubes. Add a 90mm throttle body to the mix. MAF should be equally as large. Injectors will depend on your expected power level, based on heads, cam, etc. Probably a 36# or 42# injector. __________________ Novi 2000 now spinning off the snout of the 331... Mods Pics

02-10-2004, 06:12 AM	#9
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	450 - 500hp, plus NOS = 36lb injectors. This is also why I will carb. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

02-10-2004, 08:39 AM	#10
302 LX Eric or '331 LX Eric' Join Date: Jan 1999 Location: Columbus, Ohio Posts: 2,142	Sorry, I just re-read your post up above a few spaces and see that you mentioned the 450hp number. Nevermind. E __________________ 1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60'

02-10-2004, 10:32 AM	#11
jonnyk Being stroked is great Join Date: Oct 1998 Location: Alberta, Canada Posts: 772	Remember when you convert to carb, you have to buy a new pickup, fuel pump, adapters for the line, regulator, the carb itself, a carb intake, and fab a new throttle linkage setup. IMO they're not cheaper...but on a drag car it makes sense. I would never do it on a street car. __________________ Novi 2000 now spinning off the snout of the 331... Mods Pics

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