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1987 suburban tbi 350 overheating.
Take hood off and sit on motor. lol Just get a heat gun and compare to temp gauge. They cost around $20.- fast 99
- Post #15
- Forum: Engine & Performance
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1987 suburban tbi 350 overheating.
Think you just need to varify the temperature. Those factory indicators [not gauges] and/or old wiring could be faulty.- fast 99
- Post #12
- Forum: Engine & Performance
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Edelbrock carbs on a 350 sm blk
Not saying Edlebrock carbs are bad. Have installed many with success. I do wonder how many are checked with a 02 meter or infrared? Slightly rich carbs will usually run just fine, lean not so much. I get a kick out a nice vehicle at a stop light and I can smell the CO [rich]. Guess as long as...- fast 99
- Post #22
- Forum: Engine & Performance
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1987 suburban tbi 350 overheating.
What you describe actually sounds normal. What occurred that made you suspect overheating? NAPA has 2 lines of stats. Never had any luck with the economy line. Cylinder head temp will be 10-20 degrees hotter than stat. It is also normal temp to migrate up and down a little until engine heat...- fast 99
- Post #8
- Forum: Engine & Performance
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Leaking fuel
Bottom picture finger is pointing at breather. Loops back around into the square hole in air cleaner. Breather filter is missing also needs clip to attach it to air cleaner, sometimes included with filter. Drivers side valve cover should have the PCV valve.- fast 99
- Post #6
- Forum: Carb Fuel Systems
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1987 suburban tbi 350 overheating.
Are you saying motor ran higher than 180 with a 180 stat? new condition? Is a temp gun available to confirm temp? Does the fan clutch work? push water out or boil over? Factory gauges do fail. Cheap thermostats are notoriously bad, was a high quality part purchased? I know lots of...- fast 99
- Post #4
- Forum: Engine & Performance
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Rochester Quadrajet Woes
Respectfully disagree, after doing emission work for 20+ years brass floats to not react the same or hold fuel at the same level. I was dealing with less than 1/2% co in most cases. If not familiar with emissions that isn't much. Not suggesting taking a carb apart because it has a brass float...- fast 99
- Post #33
- Forum: Engine & Performance
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ANYONE USED VORTEC HIGH SWIRL HEADS ON THEIR GEN-I SBC?
There are several brands of inexpensive aluminum heads available for small blocks. Some complete sets are as cheap as $1000. It is easy to spend 4-500 rebuilding an OEM pair and that's if they aren't cracked. Looking back I should have done that on my last project.- fast 99
- Post #6
- Forum: Tech Discussion
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EFE to Manifold Gasket Question
Actually the later style header pipe to heat riser is much better with the spring style connection. The earlier stud/nut type would loosen up over time from frame and motor movement. There are different diameter outlets. You'd be better off taking the samples to a muffler shop or parts store and...- fast 99
- Post #5
- Forum: Tech Discussion
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EFE to Manifold Gasket Question
Should find gasket design below goes against the manifold if the heat riser has a flat surface on the reverse. That style heat riser might be later model than the truck? May also need the spring style header pipe attaching kit. Not totally familiar with earlier trucks so correct me if wrong...- fast 99
- Post #3
- Forum: Tech Discussion
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Really tight front brakes!
Change the calipers when possible. After the road test you described rotors should have been very hot. Possibly both are seized. Be willing to bet pistons have varnish build up. -
Rochester Quadrajet Woes
From what I have seen Q jets don't have that many different jets sizes. Lots of metering rod changes. I saved metering rods and jets out of nearly every carb I scrapped. Mostly because water sat inside.- fast 99
- Post #30
- Forum: Engine & Performance
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Really tight front brakes!
If the rotors could be turned before calipers were installed its calipers. Although not set in stone my rule was replace calipers every second brake job. How many do you think your truck has had? -
Rochester Quadrajet Woes
Correct, with one exception what is going in the gas tank.- fast 99
- Post #25
- Forum: Engine & Performance
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Really tight front brakes!
Compare left side to right side front / same on rear. They won't be exactly the same but should be close. -
Really tight front brakes!
Yes, take a short drive get out and temp all 4 corners. Rotors on brake surface, drums on outside circumference. If reasonably even side to side try a couple moderately hard stops. Post the results. -
Really tight front brakes!
A heat gun can help diagnosis of uneven or dragging brakes. HF has them for less than $20. -
Really tight front brakes!
JB8 are higher GVW likely not what you have. Didn't mean to confuse you. There is at least one poster here that likes to jump on any little mistake. Covering my a**. -
Really tight front brakes!
All the previous suggestions are on point. Will add are the caliper slides free and lubed? There are 2 small o rings inside each caliper casting. Lube those as well. Use only high temp lube specifically designed for brakes. For noise abatement a thin film of brake lube on back of the pads... -
Really tight front brakes!
Those don't appear bad but should be machined. Machine shop doing the work will measure thickness. Usually, we just toss rotors. Not worth the labor time at a shop however those rotors have hubs and are more expensive to replace. Might be cost effective to machine them provided they are thick... -
Really tight front brakes!
Another possibility is bad calipers. When pads wear caliper pistons move outward take up the wear. When pushed back old piston surfaces are slid over rubber seals. With time and heat, brake fluid deteriorates into just plain crud. It's likely time for rebuilt calipers and hoses. -
Edelbrock carbs on a 350 sm blk
Really? There's always one. Will try to be more specific in the future. Yes, unless an OEM carb [by design] it is generic. Has to be. There's no way an aftermarket carb manufacturer can supply a specific carb for a 302 Ford Mustang grocery getter and a different one for a 454 1 ton towing a...- fast 99
- Post #15
- Forum: Engine & Performance
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Edelbrock carbs on a 350 sm blk
May or may not be jetted or adjusted for the application. Never assume any off the shelf carb will be correct. Even something as simple as a 1" spacer could change the fuel mix from engine to engine. When GM designed Q jet carbs each application had a different calibration. Not so in the...- fast 99
- Post #9
- Forum: Engine & Performance
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Edelbrock carbs on a 350 sm blk
Edlebrock carbs are decent however are generic. Get an AFR gauge/meter. It's much easier today to dial in carbs with one. Used to be had to go to a shop. Strip kit or whatever they are called: https://www.amazon.com/dp/B07T1JFJQW/- fast 99
- Post #5
- Forum: Engine & Performance
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Rochester Quadrajet Woes
Be sure to replace the float, fiber only. Brass replacements do not work the same.- fast 99
- Post #14
- Forum: Engine & Performance
