engine decoding , pls. Urgent.
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
engine decoding , pls. Urgent.
Hello
I need some info on following engines, I might purchase.
one engine with a tri-power setup
Intake = GM 3937795 E4 70
Block = GM1 3963512 , 194679 S 715923
The other engine block = HIP RPA SS GMT 3855287
What are this ? What year Tripower is this. Square or oval setup ?
Thanks a lot for all info. Gunther
I need some info on following engines, I might purchase.
one engine with a tri-power setup
Intake = GM 3937795 E4 70
Block = GM1 3963512 , 194679 S 715923
The other engine block = HIP RPA SS GMT 3855287
What are this ? What year Tripower is this. Square or oval setup ?
Thanks a lot for all info. Gunther
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Hi
OK, so 427 CI 1969 convertible Vette.
Now I just need to identify the tripower setup.
Oval port for 400 HP, rectangular for 435 HP .
Unfortunately, I do not have the engine suffix ID number.
Thanks. Gunther
OK, so 427 CI 1969 convertible Vette.
Now I just need to identify the tripower setup.
Oval port for 400 HP, rectangular for 435 HP .
Unfortunately, I do not have the engine suffix ID number.
Thanks. Gunther
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,921
From: Washington Michigan
Originally Posted by WESCH
Block = GM1 3963512 , 194679 S 715923
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Hi
Your right, I should have spotted this as well.
So, it could be a restamp if this is on the stamp pad.
I will visit this engine soon, the info so far is from the seller.
The other block casting I can't locate anywhere.( mortec.com )
Also, is the tripower intake number for 69 or ?
Thanks. Gunther
Your right, I should have spotted this as well.
So, it could be a restamp if this is on the stamp pad.
I will visit this engine soon, the info so far is from the seller.
The other block casting I can't locate anywhere.( mortec.com )
Also, is the tripower intake number for 69 or ?
Thanks. Gunther
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Hi
Thanks.
I would have prefered the square port tripower setup, but have heard that the oval port one is stronger on lower RPM. Well, if the price is OK, I will go for it.
I guess the 400 HP 69 Corvette setup is still a 4 bolt main, or ?
Rgds. Gunther
Thanks.
I would have prefered the square port tripower setup, but have heard that the oval port one is stronger on lower RPM. Well, if the price is OK, I will go for it.
I guess the 400 HP 69 Corvette setup is still a 4 bolt main, or ?
Rgds. Gunther
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Thread Starter
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Hi
Visited this setup today.
Well, the block is dated 1970 ( date code on bellhousing flange, no date code found on the pax side below the freeze plugs ? ), so should be a 454 CI block.
There where 3 sets of numbers stamped onto the VIN stamp pad ?
None of them resembled anything like Corvette alike.
The tripower setup is complete, oval port, but looks old, so needs a good overhaul.
Crankshaft needs to be ground due to frozen piston and rod pin etc.
Most probably, the block needs to be drilled oversize due to scarfs from at least one frozen piston.
Rods are not the dimple once. Pistons have very small dome, so could be the 427 CI 400 HP compression once.
Pistons are 427 CI ( even that the block is dated 70, so 454 ).
Block is a 4 bolt main.
All in all , this incorrect setup ( except for the tripower setup ) requires a lot of work and money spend to get it running.
What would be a fair price for this as is ?
Thanks. Gunther
Visited this setup today.
Well, the block is dated 1970 ( date code on bellhousing flange, no date code found on the pax side below the freeze plugs ? ), so should be a 454 CI block.
There where 3 sets of numbers stamped onto the VIN stamp pad ?
None of them resembled anything like Corvette alike.
The tripower setup is complete, oval port, but looks old, so needs a good overhaul.
Crankshaft needs to be ground due to frozen piston and rod pin etc.
Most probably, the block needs to be drilled oversize due to scarfs from at least one frozen piston.
Rods are not the dimple once. Pistons have very small dome, so could be the 427 CI 400 HP compression once.
Pistons are 427 CI ( even that the block is dated 70, so 454 ).
Block is a 4 bolt main.
All in all , this incorrect setup ( except for the tripower setup ) requires a lot of work and money spend to get it running.
What would be a fair price for this as is ?
Thanks. Gunther
7th Gear
Joined: Feb 2004
Posts: 7
Likes: 0
From: Roseburg Or
57 motot
I have a 57 Vette motor, but need to verify to make sure it's correct.
Pad #f424GC
Block # 3731578
Back of block # D287
Carb# 4JET Rochester 0846
exhaust manifold# 378978
I can get the dist #.
Any help would be great.
Thank you,
Bruce Walker in Oregon.
Pad #f424GC
Block # 3731578
Back of block # D287
Carb# 4JET Rochester 0846
exhaust manifold# 378978
I can get the dist #.
Any help would be great.
Thank you,
Bruce Walker in Oregon.
Race Director
Joined: Apr 1999
Posts: 10,861
Likes: 713
From: Beverly Hills/Pine Ridge Florida
Originally Posted by WALKERBS
I have a 57 Vette motor, but need to verify to make sure it's correct.
Pad #f424GC
Block # 3731578
Back of block # D287
Carb# 4JET Rochester 0846
exhaust manifold# 378978
I can get the dist #.
Any help would be great.
Thank you,
Bruce Walker in Oregon.
Pad #f424GC
Block # 3731578
Back of block # D287
Carb# 4JET Rochester 0846
exhaust manifold# 378978
I can get the dist #.
Any help would be great.
Thank you,
Bruce Walker in Oregon.
The casting date is D (April) 28 of 57, but the assembly date is F424GC.
The assembly date is April 24...4 days before the block was cast. Something "ain't" right there.
The GC code isn't listed for any Corvette application. Double check your numbers..block casting, block date, assembly date, and suffix. Hope this helps. Chuck
7th Gear
Joined: Feb 2004
Posts: 7
Likes: 0
From: Roseburg Or
engine code
Hi Chuck,
Thanks for the response.
The number is 3731548, fat fingers.
The intake is: 3731998
Dist: 1110890 7D8
This came out of a 57 jeep, and I was going to put it in my 48 ******, But if it is Vette motor I would rather see it back in a Vette, I have others to rebuild. I just sold a 63 Splitwindow FI car.
Thanks for the help.
Bruce
Thanks for the response.
The number is 3731548, fat fingers.
The intake is: 3731998
Dist: 1110890 7D8
This came out of a 57 jeep, and I was going to put it in my 48 ******, But if it is Vette motor I would rather see it back in a Vette, I have others to rebuild. I just sold a 63 Splitwindow FI car.
Thanks for the help.
Bruce
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,921
From: Washington Michigan
The "GC" suffix on a '57 548 block was used in '57 passenger cars with a 4-barrel and Turboglide; if the crank is original, that crank can't be used with anything but a Turboglide (only crank Chevy ever made that was unique to a particular transmission). '57 exhaust manifolds were 3733975 (LH) and 3733976 (RH), and the Rochester "4-Jet" was never used on any Corvette.
The single 4-barrel (WCFB) intake was 3731398, and the 890 distributor was used on '58 Corvette 230hp engines.
The single 4-barrel (WCFB) intake was 3731398, and the 890 distributor was used on '58 Corvette 230hp engines.
Last edited by JohnZ; Dec 11, 2004 at 01:07 PM.
7th Gear
Joined: Feb 2004
Posts: 7
Likes: 0
From: Roseburg Or
Thank
John,
Thank you very much for the informatioin. Now that I know, I'll stick it in my jeep. That's a very nice Grand Sport. I use to have a 62, 69 and just sold my 63 Vette. From Vettes to Jeeps. Go figure LOL.
I still have a 63 am/fm radio for sale.
Thanks again.
Bruce
walkerbs@dcwisp.net
Thank you very much for the informatioin. Now that I know, I'll stick it in my jeep. That's a very nice Grand Sport. I use to have a 62, 69 and just sold my 63 Vette. From Vettes to Jeeps. Go figure LOL.
I still have a 63 am/fm radio for sale.
Thanks again.
Bruce
walkerbs@dcwisp.net
