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#1 |
Registered User
Join Date: May 2014
Location: Manteca, Ca.
Posts: 274
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
I had an engine that had a wristpin knock. Very uncomfortable feeling not knowing if it was going to come apart.
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Terry Soon to be retired and moving to Bristol, TN. |
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#2 |
Registered User
Join Date: Jul 2007
Location: Fall River California
Posts: 2,026
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
I just got my truck back from the gm dealer, they're trying to tell me that my plug wires are to long and the truck won't ever time correctly, that this engine will never run right with a quadrajet, even though Summit and GM recomend it. They say it absolutely has to be a holly! Then they told me it could be the RTV I used on the front and rear of the intake, that it should never be used anywhere on an intake even though there's no leak. They say there is nothing wrong other than that. They then charged me $100. I have tried the exact quad GM and summit say will work with no luck, I know the plug wires are fine, they are a little long but there's no way it will take anymore time for electricity to travel the extra four inches of plug wire on three cylinders, there are no vacuum leaks. Anyone ever have trouble using a quad on one of these engines? Issues with silicone on the intake? Long plug wires preventing timing? Then they told me my carb leaks, that there is gas puddling all over my intake, I looked and the only wet spot was right next to the oil fill on the valve cover that I didn't get cleaned up when I spilled a cap full of oil. My intake is dry, you can tell no gas leaked anywhere, they just assumed the 1/2 teaspoon of oil was gasoline.
Anyway they couldn't figure anything out. When I brought up that summit recomends a quadrajet the guy just shrugged, When I mentioned people have been using RTV for the intake for decades he shrugged again. I was a little mad about all this but my toungue because I have a car I bought from them that may need service someday, now that I'm home I doubt I'll take even my car there again. I understand these engines are simple, that there's only so much that can go wrong but it sounded like they were just making excuses. The best part was when they offered to install a new carb and the "correct" plug wires for a mere $1245, how generous!
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#3 | |
Registered User
Join Date: Nov 2014
Location: Dickinson, ND
Posts: 197
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
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#4 | |
Registered User
Join Date: Feb 2009
Location: Southern Oregon
Posts: 1,352
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Quote:
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1967 C10 Suburban 454/TH400/3.07's An Average Joe and His 'Burb: http://67-72chevytrucks.com/vboard/s...d.php?t=775843 |
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#5 | |
Registered User
Join Date: Dec 2014
Location: Kearney, NE
Posts: 30
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Quote:
An overly rich condition will kill horsepower. Once fixed, replaced your spark plugs as they are now probably black from running rich. Then set your timing to the engine manufacturer's recommendations. I am sure you feel more power in the ole seat of the pants dyno. |
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#6 |
Registered User
Join Date: Dec 2006
Location: Tempe, Arizona
Posts: 100
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Wow, I'm really sorry that this is still going on and that you weren't given any good explanations for what's happening. Hang in there, you'll figure it out. There has been a lot of good information provided on this thread, perhaps using the information to create a solid step by step plan would be helpful.
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#7 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
I knew it sounded too easy.... They may be right though... It may be the trans or something you've missed. I think on certain intakes you need to block off the center egr port, not sure what issues it would cause though. Something to look into?
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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#8 |
Registered User
Join Date: May 2012
Location: Faith,NC
Posts: 1,626
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Is there any way there could be a plug or cap left on from assembly or shipping? Something that would block airflow or fuel flow? You did say the engine runs strong so that would point me back to the tranny or torque converter.
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#9 |
Registered User
Join Date: May 2014
Location: Dallas, TX
Posts: 10
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Techs at dealerships nowadays can't diagnois anything without a laptop. Being that your engine is old school they have to guess at what it is. Unless your spark plug wires are 12ft long I doubt that is your problem. But from what I read you saying that it idles fine and revs fine but has no power in gear tells me its a timing issue. I know you checked everything but I can almost guarantee it's a timing issue. I'm a forklift technician and I had an old Yale lift that was doing the same thing your engine is. Even tho this was a 4 cylinder and yours is a v8 the same rules apply. I assumed the timing was fine because it idled and revved and started with no issues. But once in gear it didn't have enough power to move out its own way. Did all the parts swapping just like you, carb, dis, wires, plugs, adjust timing and nothing worked. I knew the cylinder head was off before I worked on it due to a bad head gasket so I checked the timing and found that even though the timing marks lined up the position of the camshaft wasn't right. Moved the cam 180 and put back together. Ran it and it was like I put a new engine. From my experience I don't assume anything. Guess what, someone put your engine together. Don't trust that what they did was right.
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#10 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
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#11 |
#16876
Join Date: Apr 2005
Location: Auburn WA
Posts: 12,266
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Bite the bullet and funnel the money in the right direction. It sounds like there's problems beyond what you bought from Summitt.
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Posted via Stationary Device '71 Custom Deluxe C-20 402. '67 Buick Special 455. '49 Plymouth Special Deluxe. "I love that old car smell" ![]() Some people are like Slinkies... not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs. |
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#12 |
Registered User
Join Date: Jul 2007
Location: Fall River California
Posts: 2,026
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Thanks guys but I promise, every suggestion has been tried, several times. I'm getting my old engine rebuilt, I will probably pull this one and give it to my daughter, I gave her my 69 which has the original engine and it's tired. But still stronger than my new engine after forty two years! Her boyfriend is talking about tearing the one in my truck apart and upgrade it then put it in the 69. It was funny at the dealer, one of the guys was talking about getting the engine I have, I asked him if my warrantee was transferable and he said yes, so I offered to sell him my engine half price, he gave me a very fast and loud NO THANK YOU!, this was right after he told me there's nothing wrong with it.
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#13 |
Registered User
Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,188
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
The dealer couldn't figure it out because there's no diagnostic port. Plug wires are too long? Wrong sealant on the intake? Did he get his sae cert from a cracker jack box? An engine this basic is not hard to diagnose for those in the field. I honestly think you've had an unfortunate run of lazy mechanics who do book work troubleshooting.
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#14 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
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#15 |
Registered User
Join Date: Jan 2011
Location: Townsend MT
Posts: 1,725
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
You never gave us any vacuum readings.
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#16 |
Registered User
![]() Join Date: Oct 2013
Location: Elkton
Posts: 693
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
We never got any readings i cant say it enough give us the FACTS .
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#17 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Quote:
http://www.summitracing.com/parts/mrg-4600/overview/ Or this one? http://www.summitracing.com/parts/mr...make/chevrolet |
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#18 |
Registered User
Join Date: Feb 2013
Location: Ocala, Florida
Posts: 11
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
So...what happened to this fiasco?
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#19 |
Registered User
Join Date: Dec 2009
Location: El Dorado Ca
Posts: 3,374
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
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#20 |
Registered User
Join Date: Aug 2017
Location: Tallahassee, FL.
Posts: 125
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Sorry guys, I thought I replied to this already. Essentially, the head gasket on cylinder three failed and my radiator cap failed and came loose at freeway speeds in the Nevada desert in triple digit heat. These two things contributed to a hairline crack in the block at cylinder three. Truck was pushing 164,000 miles when it happen. No prior mechanical issues from 71K to 164K (my timespan of ownership). I got it from the original owner about 13 years ago +/-
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1998 Chevy Tahoe 2D 1949 Willys CJ2A 1967 C-20 Flatbed (Sold) |
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#21 |
Registered User
Join Date: Apr 2013
Location: South Westerlo, New York
Posts: 1,325
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
I'm still sticking with my earlier post, (#51) and think the cam is out of sinc with the crank. it's going to have to be checked with a degree wheel...
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Thanks, Joe.. 1969 C/10, 348 C.I., 3X2 bbl. V8, 2004r , LWB. |
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#22 |
One of the First
![]() Join Date: Jan 2000
Location: St. Augustine,FL.
Posts: 4,054
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
I'll throw this out here. Try this method, break the troubleshooting down to 3 areas: Motor, Transmission and Gearing. Ensure each one is functioning correctly and that it meets need for your application. ie: modified 4x4.
On the same note about your crate motor, your situation was similar to mine. I purchased a GM crate motor 295 HP for my 72 K20. I had a strong mildly built 350 in it that blew a head gasket, plus it had a lot of miles on it. My son needed a vehicle to drive to school (16yrs old at the time). I bought that motor, as it would be dependable, low HP driver for him. Plus I would rebuild my other motor. So, as you experienced, what a SLUG! When I got the motor, I checked it out, two really lose rocker arms, fixed that. I went basic, EPS edelbrock carb and intake and NAPA wires and rebuilt point distributor. It ran great, I had to play with the jetting of the carb to get to run at max power. Even with the motor tuned (new dual exhaust), stout TB 350 and 4:10 gearing it was like driving my grandmothers 1976 Ford Granada with a four banger! Well, unfortunately he wrecked the old girl and we parked it. It has been setting for the last few years, only about 5k on the motor. Over the holidays, we pulled that motor and checked it out - good shape. Now, were going to use the bottom end and pump it up on the top end. I purchased some AFR heads, have a nice eldelbrock performer intake, recondition/rebuilt Quadra-jet and Taylor wires and a DUI small GM distributor. I still have to spec the CAM. So look for a motor build thread over in the drive train section. Good Luck!
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DAVID PASSMORE ST AUGUSTINE ,FL ZIP 32084 '71 SWB K/10 CUSTOM DELUXE (Chili) '72 BLAZER K/5 Muscle Truck (Mule) '72 LWB K/20 CHEYENNE (Blackie) |
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#23 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Quote:
The cam on this engine is too much for the low compression heads. I'd suggest 64cc AFR 180s and use the thin felpro 1094 head gasket and get the quench right. If you have the same 290HP engine, here are your cam specs. I would suggest checking tappet lift and multiply X 1.5 to be sure it has the same lift. "The 350/290 HP engine uses an aggressive flat tappet camshaft to achieve the level of performance for its intended usage. Camshaft lift is .450" intake / .460" exhaust. Camshaft duration (@.050") is 222 degrees intake and exhaust. Lobe centerline is 114 degrees. Normal engine manifold vacuum for the 350/290 HP engine is 10-12" Hg at idle (650-750 rpm)". You could choose a split duration cam with 112 lobe centerline and enjoy more vacuum. I like the Lunati voodoo cam for this app, let me know if you want recommendations for the cam and don't go overboard on the size of the head intake runners. To achieve the performance potential of the AFR heads you will need headers. For the 4X4 I would suggest tri-y design with cross-over dual pipes. Here are all the specs on that engine. http://www.chevrolet.com/content/dam...e-12499529.pdf |
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#24 |
One of the First
![]() Join Date: Jan 2000
Location: St. Augustine,FL.
Posts: 4,054
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
mechanicalman, thanks for the info. I will need some guidance on the build. I do have AFR 64 cc w/ 195 intake runners and I'm running straight dump 2.5 OE corvette manifolds.
Air speed, don't give up on it. Ill let you know when I start the top end rehab and thread. The last time I had a stock bottom end rebuilt/reassembled at a good machine shop, it ran about $1500. So, with your crate motor, you have a good bottom end if you want to "pump it up"!
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DAVID PASSMORE ST AUGUSTINE ,FL ZIP 32084 '71 SWB K/10 CUSTOM DELUXE (Chili) '72 BLAZER K/5 Muscle Truck (Mule) '72 LWB K/20 CHEYENNE (Blackie) |
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#25 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: Anyone ever had luck getting summit to honor a warrantee for a bad crate engine?
Quote:
I noticed when they are bolted on, they tend to sag a little and tended to mis-align with the head. Using some wet paint on the head I bolted the manifolds on and let gravity do what it does then tightened the bolts, and removed the manifolds. I noticed that the top of the manifold hung down into the port enough to disrupt exhaust gas flow so I got out the grinder and ground out the parts where the paint did not transfer on the top side of the port and blended it in. I don't think it would be productive to grind the bottom of the head port to match the ex manifold, I only modified the top side or the manifold ports. Then many years later I installed Hooker long tube headers and was amazed at how much better they flowed than the ram's horns through the exact same ex pipes. I will concede that ram's horns are the best OEM ex manifolds out there, and I have no experience with the 2.5" center dumps I expect they would be better than the 2.25" angle dumps. 195cc AFRs are more for 383 than for 350, especially on a 4WD, unless you are geared low and are willing to turn more RPMs. I hope you were able to salvage/repair the wrecked vehicle ![]() |
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