Crate Motor Experience - Page 3 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jhow66 · 12-12-2003, 09:57 PM

Just one question--how are you going to get it to hookup so you can use all that HP? Can't get my 502HO to hook with a 3.08 Posi.

peperkod · 12-12-2003, 10:48 PM

Sorry to hear about all your trouble. I have had a ZZ502/502 in my truck for four years now and could not be happier. It ran great right out of the crate and seems to be getting better with age, I did however get rid of the Holly carb it was a pain in the neck.

miket · 12-12-2003, 11:39 PM

Quote:

Originally posted by jhow66
Just one question--how are you going to get it to hookup so you can use all that HP? Can't get my 502HO to hook with a 3.08 Posi.

ya know...I dunno...I guess I will adress it later this year...would rather have the hp/tq and no traction than traction and no hp/tq I guess.

I do have to change the rear tires and put a posi in it....that will happen this year.

miket · 12-12-2003, 11:43 PM

Quote:

Originally posted by peperkod
Sorry to hear about all your trouble. I have had a ZZ502/502 in my truck for four years now and could not be happier. It ran great right out of the crate and seems to be getting better with age, I did however get rid of the Holly carb it was a pain in the neck.

I have to agree with you on the 870 vac sec carb.....that is a pain.

I am really very excited to get the motor back...or should I say dynoed as well. I wouldn't be surprised to see 650 out of this thing....that would be great.

jhow66 · 12-13-2003, 02:09 AM

Shore is fun trying to get traction. I got the 850 vac. sec. carb on mine that GM sells. Runs fine -only changed the secondary spring(put one of the easy change kits on). Only problem with my motor is oil usage-1qt every 300 to 400 miles -no smoke anytime-no leaks but still goes some where. This is not a big problem with me as I have had it 3 years and only have 6,000 + miles on it. Oil usage has not changed from day one. Pace & GM says low tension oil rings--right. Still would buy another (572?). Good luck on your motor.

miket · 12-13-2003, 09:58 AM

Thanks jhow. I can't wait to get it finished now. I heard about the oil usage...I didn't seee much with mine but honestly I didn't get a chance to drive it that much. It should be fun.

68racer · 12-14-2003, 02:38 PM

What carb would you guys recommend?

jhow66 · 12-14-2003, 03:05 PM

If you are just using it for the street use the one GM reccomends--850 Holley with vac sec. part # 0-80531. They sell it. If you want a little more try the Street Avenger 870 Part # 0-80870.

jhow66 · 12-14-2003, 03:07 PM

Here is the 0-80531

miket · 12-14-2003, 04:58 PM

Personally I do not like vac sec. carbs.

cableguy0 · 12-19-2003, 09:20 PM

dont bother with a vac secondaries carb just get a mechanical secondaries it will be better in the long run from a performance stand point

jhow66 · 12-19-2003, 11:57 PM

I agree from a performance standpoint but for a everyday driver you will be glad you have vac sec carb everytime you pass a gas pump.

68racer · 12-20-2003, 10:16 AM

It will be street/strip, I was thinking 850 double pumper. I run a 750 d/p now on the small block.

To control traction on the street there is a new gadget from MSD that measures crank acceleration. You calibrate it so that the crank is only allowed to accelerate up to a set rate. If it increases too quick the wheels are spinning. Has already been banned by NHRA as it is traction control.

Only two months before the 502 arrives....

miket · 12-20-2003, 12:37 PM

68,

Sallee recommended the speed demon 850dp. Other guys I have communicated with said that a 900 to 1000cfm works even better on bigger heads say rectang ports...they were seeing 700hp and more with true valve openings at .700 or better. They were running full race fuel systems as well.

jhow66 · 12-20-2003, 12:51 PM

I have a 750DP on my 355 in my 56. Made it into a 4-hole idle carb with a rear block off a 850DP then drilled body. Works great.

miket · 12-23-2003, 12:44 AM

Update 12/22/03:

Talked with Sallee today. Motor should be back by Jan 1 or so.

It will go on the dyno before shipping....I should have the printout soon after...

I will have a spare ZZ cam, ZZ502 valve covers, and Street avenger vac sec 870 carb.....

miket · 01-08-2004, 11:49 PM

Update 01/08/04:

Motor was put on the dyno and started today for break-in. Unfortunately I won't have a dyno sheet until next week. It looks like I will have the truck back by the end of the month.

Salle did tell me I will even get a video of the dyno which I thought was pretty cool.

Heres to hoping for 650HP.

miket · 01-09-2004, 08:28 PM

Quote:

Originally posted by jhow66
Shore is fun trying to get traction. I got the 850 vac. sec. carb on mine that GM sells. Runs fine -only changed the secondary spring(put one of the easy change kits on). Only problem with my motor is oil usage-1qt every 300 to 400 miles -no smoke anytime-no leaks but still goes some where. This is not a big problem with me as I have had it 3 years and only have 6,000 + miles on it. Oil usage has not changed from day one. Pace & GM says low tension oil rings--right. Still would buy another (572?). Good luck on your motor.

JHOW it will be interesting to see how the oil consumption turns out....I believe they replaced my rings and file fit them....maybe this will make a difference.

Blue Beard · 01-09-2004, 11:27 PM

seems like all the bigger c.i. engines have more troubles that just a 350 stocker crate motor.........

jhow66 · 01-10-2004, 01:39 AM

Be sure and let us know the dyno #'s.

miket · 01-10-2004, 01:43 AM

I will be out of town but will post what comes out of it.

miket · 01-14-2004, 03:49 PM

Update 01/14/03:

Dyno numbers....

663hp at 4800 and 625ft/lb's torque

Motor ships today....

lukecp · 01-14-2004, 04:00 PM

Sweet.....sounds like a load of fun

**Yukon Jack** · 01-14-2004, 04:01 PM

Wow!

Dean · 01-14-2004, 04:07 PM

I personally would not trust a GM crate engine without pulling it down and checking everything and I mean everything. I have three ZZ4 engines and I had major trouble with all of them. And they were not abused in any way. I thought it was the way to go, but so much for that. I'm so discouraged with them that I never even took the last ZZ4 apart. It has been sitting on the stand for awhile. Must just be my great luck....

12-12-2003, 09:57 PM	#51
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Just one question--how are you going to get it to hookup so you can use all that HP? Can't get my 502HO to hook with a 3.08 Posi. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

12-12-2003, 10:48 PM	#52
peperkod Registered User Join Date: Jan 2000 Location: Calgary Alberta Canada Posts: 43	502 Sorry to hear about all your trouble. I have had a ZZ502/502 in my truck for four years now and could not be happier. It ran great right out of the crate and seems to be getting better with age, I did however get rid of the Holly carb it was a pain in the neck. __________________ 1971 GMC 1/2 ton 502/502 th 350 3.73 posi headers GM coral Ice pink Calgary Albeta Canada

12-13-2003, 02:09 AM	#55
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Shore is fun trying to get traction. I got the 850 vac. sec. carb on mine that GM sells. Runs fine -only changed the secondary spring(put one of the easy change kits on). Only problem with my motor is oil usage-1qt every 300 to 400 miles -no smoke anytime-no leaks but still goes some where. This is not a big problem with me as I have had it 3 years and only have 6,000 + miles on it. Oil usage has not changed from day one. Pace & GM says low tension oil rings--right. Still would buy another (572?). Good luck on your motor. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

12-13-2003, 09:58 AM	#56
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Thanks jhow. I can't wait to get it finished now. I heard about the oil usage...I didn't seee much with mine but honestly I didn't get a chance to drive it that much. It should be fun. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

12-14-2003, 02:38 PM	#57
68racer Yeah baby! Join Date: Feb 2001 Location: United Kingdom Posts: 436	What carb would you guys recommend? __________________ 11.37 @116

12-14-2003, 03:05 PM	#58
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	carbs If you are just using it for the street use the one GM reccomends--850 Holley with vac sec. part # 0-80531. They sell it. If you want a little more try the Street Avenger 870 Part # 0-80870. Attached Images __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

12-14-2003, 03:07 PM	#59
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	oops Here is the 0-80531 Attached Images __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

12-14-2003, 04:58 PM	#60
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Personally I do not like vac sec. carbs. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

12-19-2003, 09:20 PM	#61
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	dont bother with a vac secondaries carb just get a mechanical secondaries it will be better in the long run from a performance stand point __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

12-19-2003, 11:57 PM	#62
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	I agree from a performance standpoint but for a everyday driver you will be glad you have vac sec carb everytime you pass a gas pump. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

12-20-2003, 10:16 AM	#63
68racer Yeah baby! Join Date: Feb 2001 Location: United Kingdom Posts: 436	It will be street/strip, I was thinking 850 double pumper. I run a 750 d/p now on the small block. To control traction on the street there is a new gadget from MSD that measures crank acceleration. You calibrate it so that the crank is only allowed to accelerate up to a set rate. If it increases too quick the wheels are spinning. Has already been banned by NHRA as it is traction control. Only two months before the 502 arrives.... __________________ 11.37 @116

12-20-2003, 12:37 PM	#64
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	68, Sallee recommended the speed demon 850dp. Other guys I have communicated with said that a 900 to 1000cfm works even better on bigger heads say rectang ports...they were seeing 700hp and more with true valve openings at .700 or better. They were running full race fuel systems as well. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

12-20-2003, 12:51 PM	#65
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	I have a 750DP on my 355 in my 56. Made it into a 4-hole idle carb with a rear block off a 850DP then drilled body. Works great. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

12-23-2003, 12:44 AM	#66
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Update 12/22/03: Talked with Sallee today. Motor should be back by Jan 1 or so. It will go on the dyno before shipping....I should have the printout soon after... I will have a spare ZZ cam, ZZ502 valve covers, and Street avenger vac sec 870 carb..... __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

01-08-2004, 11:49 PM	#67
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Update 01/08/04: Motor was put on the dyno and started today for break-in. Unfortunately I won't have a dyno sheet until next week. It looks like I will have the truck back by the end of the month. Salle did tell me I will even get a video of the dyno which I thought was pretty cool. Heres to hoping for 650HP. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection



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01-09-2004, 11:27 PM	#69
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	seems like all the bigger c.i. engines have more troubles that just a 350 stocker crate motor......... __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

01-10-2004, 01:39 AM	#70
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Be sure and let us know the dyno #'s. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

01-10-2004, 01:43 AM	#71
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	I will be out of town but will post what comes out of it. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

01-14-2004, 03:49 PM	#72
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Update 01/14/03: Dyno numbers.... 663hp at 4800 and 625ft/lb's torque Motor ships today.... __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

01-14-2004, 04:00 PM	#73
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	Sweet.....sounds like a load of fun __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

01-14-2004, 04:01 PM	#74
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	Wow! __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

01-14-2004, 04:07 PM	#75
Dean Senior Member Join Date: Jan 2000 Location: Cincinnati, Ohio Posts: 1,492	I personally would not trust a GM crate engine without pulling it down and checking everything and I mean everything. I have three ZZ4 engines and I had major trouble with all of them. And they were not abused in any way. I thought it was the way to go, but so much for that. I'm so discouraged with them that I never even took the last ZZ4 apart. It has been sitting on the stand for awhile. Must just be my great luck....

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