Chevy Silverado

GMC Sierra

Air Filters and Intake Manifolds

Chevy 350

678

the fastest way to tell is if the center intake bolts are not there.the vortec heads that everyone wants for performance have no center intake bolts.

the fastest way to tell is if the center intake bolts are not there.the vortec heads that everyone wants for performance have no center intake bolts.See link below.

The torque specifications, for a 4.3 liter engine manifold, is 45 pounds per square inch. Torque the manifold bolts in 15 pound intervals.

Yes an 89 350 will bolt up to original Vortec heads. However, Vortec heads have an 8 bolt inatke manifold that is different from the standard 89' intake. Its worth mentioning that the intake manifolds changed in 1986. Prior to 1986 all intake manifolds for a sbc had 12 bolts. These 12 bolts all secured the intake to the head at the same angle. In 1986, or primarily in 1987 the intakes 4 center bolts were changed to a steeper angle. With the introduction of the vortec head came a new 8 bolt intake eliminating the 4 center bolts. If you plan to use Vortec heads on any V8 be it a 305,327,350 or bigger, you will need a Vortec intake manifold as well. You can also buy an after market intake to run a carburetor on a set of Vortec heads in place of the TBI injection.

Yes, they will fit, and increase torque by a good amount. However, the Vortec heads used a vertical intake bolt design, so you will not be able to use your intake manifold. Side note on the vertical intake bolts, you also need to get Vortec specific intake bolts, because they bottom out in the heads to stop from overtightening and seal better. All in all, vortecs are a good purchase, if you have the money for a new intake manifold. Edelbrock makes some great ones specifically for vortec heads on older engines. look into it. hope i could help.

you can as long as you use your TBI heads if you want to use the vortec heads with TBI you will need a special intake manifold or a carb manifold with a adapter to mount your throttle body to the carb manifold heres some more info TBI heads will mount to the vortec block TBI intake manifold has 12 bolts vortec intake manifold has 8 bolts

Install the lower intake manifold to the engine. Apply sealer, GM P/N 1052080 or equivalent, to the lower intake manifold bolts.Install the lower intake manifold bolts. Tighten the bolts in three steps:TightenTighten the bolts on the first sequence to 8 N·m (71 lb in).Tighten the bolts on the second sequence to 12 N·m (106 lb in).Tighten the bolts on the final sequence to 15 N·m (11 lb ft).I this is what you are looking for.GMmechanic@gmail.com

The 350 cubic inch Chevrolet intake manifold bolts have a torque specification of Haiti pounds psi. The bolts should be torqued at 40 pound intervals.

torque for bolts upper intake 1999 ford taurus 3.0 dohc

Intake bolts should be torqued to 35 ft lbs in the appropriate sequence. There should be 12 total "intake" bolts

Nuts are 200in-LBS Bolts are 100in-LBS

Depends on the diameter of your intake bolts. For 5/16" bolts torque is 23-25 ft lbs, 3/8" bolts are 28-32 ft lbs, and the 1/4" bolts are torqued 6-9 ft lbs.

what is the torque specifications for the intake bolts on a ford 4.2L?

35 ft. lbs. on the intake, and 70 ft. lbs. on the flywheel.

I FOUND THIS AT WWW.AUTOZONE.COM, CLICK ON VEHICLE SPECS . For your 1999 CHEVROLET TRUCK BLAZER 2WD: INTAKE BOLT TORQUE FOOT POUNDS (FINAL TORQUE) TORQUE LOWER MANIFOLD BOLTS TO 27 IN/LBS TORQUE LOWER BOLTS TO 9 FT/LBS TORQUE LOWER BOLTS TO 11 FT/LBS TORQUE UPPER MANIFOLD BOLTS TO 44 IN/LBS TORQUE UPPER MANIFOLD BOLTS TO 7 FT/LBS (TO TORQUE BOLTS & NUTS, START IN CENTER USING CRISSCROSS PATTERN)

lower intake is 132 lb's upper intake is 89 lb

Get a manual on your car and it will give you the settings of the intake, exhaust bolts plus the head bolts and torque pattern.

I believe the torque is figured on the bolt size, not the material. you are using steel bolts ,therefore the torque for an intake bolt on a sm. block is 20 ft. lbs.

torque specs axel not and wheel hub bolts

Torque is 30 Lbs at he intake bolts.torque bolt order is as follows:the numbers below also represent the bolt position on the intake.1 and 2 being the bolts in the center of the intake.6---85---71---24---311---912---10Hope that helps

for the rocker arms bolts its-- 98 and later, step 1- 168 in-lbs. step 2-- rotate an additional 30-degrees. this is all for a 3.1 v6, the intake bolts are -- (lower) step 1, 62 in-lbs, step2, 115 in-lbs, intake manifold bolts/studs(upper)---18 ft-lbs,

Intake Manifold torque is 30 ft/lbs on the 460 Ford V8Valve cover is 10 ft/lbs

they have valve covers that bolt down from the center, with heart shaped chambers on the 5.7 heads and no center intake bolts. the 5.0 vortecs are similar and not as good but still will flow really well compared to most heads and the old camel backs or humps.the fastest way to tell is if the center intake bolts are not there.the vortec heads that everyone wants for performance have no center intake bolts.see link below

The 1999 Mercury Milliliter intake bolt torque specifications is 60 pounds per square inch. The intake bolts should be torqued at 30 pound intervals.

Tightening the bolts in the typical order from the middle out, the upper intake bolts torque in first pass at 44 in lbs, the second pass at 88 in lbs. The lower intake bolts start with 27 in lbsfor the first pass, 106 in lbs for the second pass and 133 in lbs for the last pass.

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