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Thread: Sniper EFI - '77 Ford 460

  1. #1

    Default Sniper EFI - '77 Ford 460

    Stock spread-bore intake & WBO2 sensor placement? Would it be possible to install a Sniper EFI on a '77 Ford 460 (in a Lincoln Continental) stock spread-bore intake? The bolt pattern will work, I know, but what about the spread-bore? Is there some adapter that can be used without making the whole thing too tall? Or do I have to bite it and get a new intake?

    The car has catalytic converters on both sides before the pipes merge, which means installing the WBO2 sensor where the exhaust pipes merge isn't possible. How can this be solved without replacing the stock converters with something installed after the merge?

  2. #2
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    You should install it the recommended distance after the primary tubes merge before the catalytic converters in one side. You can put a bung in each side and find which one runs leaner and keep it in that tube.

  3. #3
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    https://www.holley.com/brands/holley...efi_quadrajet/ (Holley Sniper EFI for QuadraJet Spread-Bore Intake Manifolds)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

  4. #4

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    Yeah, but will this fit any spread-bore or only QuadraJet? The "pattern" is quite different between the stock 4350 carb and a QuadraJet, only thing in common is two small and two big holes.

  5. #5

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    If the bolt pattern isn't the same, then it won't fit. If you want to run a Sniper you'll need to use an adapter or buy a different intake.

  6. #6
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    Quote Originally Posted by E_S View Post
    Yeah, but will this fit any spread-bore or only QuadraJet? The "pattern" is quite different between the stock 4350 carb and a QuadraJet, only thing in common is two small and two big holes.
    Sorry, I didn't know there's a spread-bore bolt pattern difference between Ford & GM. Even the Holley product video states it's for '65-'79 Chevy, Buick, Oldsmobile & Pontiac engines (non-emissions carburetor).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

  7. #7
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    It looks like they don't make an adapter, you may need a new intake.
    https://www.jalopyjournal.com/forum/...a-sbf.1115570/
    http://www.drbob.tqhosting.com/tech/..._compared.html

  8. #8

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    Here's one, but it's 1" tall. However, the Sniper seems to work better with a spacer in some applications. You need the 1" because of the bore transitions. If 1" is too much a new intake may be a better option. https://www.summitracing.com/parts/trd-2199

  9. #9

    Default

    Quote Originally Posted by E_S View Post
    Yeah, but will this fit any spread-bore or only QuadraJet? The "pattern" is quite different between the stock 4350 carb and a QuadraJet, only thing in common is two small and two big holes.
    The 4350 mounting pad is a weird one time only deal that nobody supports. Just buy a new intake manifold. http://www.drbob.tqhosting.com/tech/..._compared.html

  10. #10
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    @AndyF: Yes, the 4350 does NOT share any resemblance to a GM spread-bore carb. It's a weird one alright, shares 4150 bolt pattern (square-bore carb), and the primary butterly locations. Large secondary bores share no location specs with any other carb. What was Motorcraft thinking back then? You need to buy another intake if you want to get anything else other than this carburetor. Gary

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