Hello all, i'm a new CrownVic Owner and just joined here, what a great site. I have a 1985 CV with a 351 W. I am looking to add a four barrel carb to it . I have the intake already, and am wondering what size to get . I"m thinking mild street, update the cam nothing too big . I've had eddy carbs before and find them to be junk. Thanks !
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650 cfm is plenty for stock heads... 600 may also be enough. Get a spreadbore for better gas mileage and a square bore for more noise and maybe throttle response.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes. -
A 650 would give you plenty of wiggle room should you decide to upgrade your heads & cam later down the road. If not, then a 600 should fit the bill just fine. I'd choose a Holley with vacuum secondaries, a 4150 if you want to mess around with jetting and power valve options for the secondaries or a 4160 if you're not that brave. Common myth is you want those secondaries to slam open with the primaries but that is just myth. With vacuum secondaries the car will open the secondaries as needed based on plenum vacuum.1985 LTD Crown Victoria - SOLD
1988 Town Car Signature - Current Party BargeComment
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650 is overkill for sure, 600 is borderline too much for a stock 351w
yrs ago a guy i knew was running a 390 cfm holley carb on his 91 cvpi.......plenty of power and 25 mpg highway
1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
2006 Lincoln Town Car Signature. Stock for now
1989 Ford F-250 4x4 much much more to come, sefi converted so far.
1986 Toyota pickup with LSC wheels and 225/60/16 tires.
2008 Hyundai Elantra future Revcon toad
1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)
please be patient, rebuilding an empire!
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A 390 is actually what Ford was using on the 351 in truck applications in the mid 80s. It can't make effective use of more on a stock motor.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers
Everything looks like voodoo if you don't understand how it worksComment
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I had a 600cfm on my C10 with the 350/290 crate and it ran very well. You don't need more than that until you're at 300 or more hp. Add lower gears to it and that'll give it the grunt you're after.88 Town Car (wrecked, for sale)
Walker OEM duals with muffler deletesComment
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Holley makes a 390 cfm 4160 I believe. If youre going to do more stuff down the road, do a 600, and get some smaller jets. The engine will only take as much air as it needs, so even if the carb is theortetically too big, if its correctly tuned, it will still perform well.**1976 Ford F-150 4WD: 360, 4 spd, 3.50s, factory A/C, 4" lift, Bilsteins, US Indy Mags, 35s Cruiser
**2004 F-150 XLT 4WD RCLB: 4.6/ 4R70, 3.55, 90K Daily Driver
**2012 Ford Mustang Boss 302: 5.0/ 6 spd/ 3.73s, 20K Cruiser
**2012 Harley Davidson Wide Glide (FXDWG):103/ Cobra Speedsters/ Cosmetics, 9K Poseur HD RiderComment
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Thanks for the replies guys. I do want to put in a bigger cam down the road, I was thinking a 600 cfm would do fine with some new gears. I have the aluminum intake already (came with the car ) Are the heads alright or should I be looking for bigger valved heads? Not sure if I want to go all out and get the aluminum RPM eddy heads just yet. Maybe also some new headers as well this summer . I built an old Plymouth and sold it, so all this Ford stuff is kind of new to me and the combos people use so any info is greatly appreciated.Comment
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Has any body had any experience with a 1900 Street Demon Carb?Comment
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a 600 cfm SHOULD WORK WELL even do sos with some upgrades. Make sure its a vacum secondary. Woud recomend a Quick fuel over a holley they are a lot easier to tune as they have the ability to change air bleeds, and jets in the idle feed curcuits.Scars are tatoos of the fearlessComment
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Okay I think I may try Summit's 600 cfm carb it's seem to of gotten pretty good reviews.. as for the job ... i currently have factory 2 barrel carb and intake. I have a 4 brl aluninum intake. Are these upgrades a paom when it comes to the linkages ? Will i have to buy adapters of some sort to do this? I'd like to make this my first attempt at installing it myself..i normally get my mechanic to do this . Help is appreciated guys, thanksComment
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I am also thinking about a mild cam...and suggestions? I will be getting a stall converter probably 2400 ish range not too sure yetComment
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I'm also readin if I upgrade from the stock 2 brl carb and intake, i'd need a cam as well or can this wait ?Comment
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One thing to consider, replacing the cam requires removal of the intake. The 85 probably has that crappy plastic timing gear, which really ought to be replaced if you haven't done it yet. Getting the cam out requires removing the timing chain. Honestly, you're already halfway there at this point. The kink with this, the heads on it also suck. A cam will only get you so much without swapping those boat anchors for something that will move some air.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers
Everything looks like voodoo if you don't understand how it worksComment
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okay thank you.... will the linkages be an issue? for the carbComment
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