Ever wonder what a GT40 weighs
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=50519
Printed Date: January-28-2025 at 8:17pm
Topic: Ever wonder what a GT40 weighs
Posted By: jhersey29
Subject: Ever wonder what a GT40 weighs
Date Posted: March-23-2022 at 5:01pm
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833ish lbs. with transmission. No oil other than remnants from drains. The stand and 2 pieces of 2x4 don't weigh all that much. Missing a few water hoses.  |
Replies:
Posted By: ultrarunner
Date Posted: March-23-2022 at 7:17pm
| Would make sense to go all aluminum in a rebuild if you had a trashed block I suppose. If also you went aluminum heads, intake and exhaust, I'd imagine a couple hundred lbs of weight savings, maybe. If light weight is important, and money isn't...there you go. I'd imagine someone has done this... |
Posted By: MourningWood
Date Posted: March-23-2022 at 7:36pm
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Someone has indeed... With help from my friends at Edelbrock, I replaced: Heads Intake and scored a pair of Pyramidal exhaust manifolds... ...all in aluminum. I also Converted to a crank-driven RWP, and an aluminum PCM 40a transmission. Misc and Sundry and a 26 ib. battery. Net saving was @280# Did nothing for performance or wakes. ------------- 1964 Dunphy X-55 "One 'N Dun" 'I measured twice, cut three times, and it's still too short!" |
Posted By: ultrarunner
Date Posted: March-23-2022 at 7:56pm
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NICE! See, I knew it. You’re getting the best gas mileage than any of us! Easily break even on cost in a couple of ge stations;-) |
Posted By: Jonny Quest
Date Posted: March-23-2022 at 8:32pm
But now you can respond to the “unwashed masses” of cast iron engine components with an air of gravitational superiority. Which is nice. JQ
------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
MourningWood wrote:Posted By: MrMcD
Date Posted: March-24-2022 at 2:58am
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MorningWood, I need to ask what power difference you found with the new heads and intake. Does it run out at a faster top speed, what RPM before and after. Sounds like a fun toy now. ------------- |
Posted By: KENO
Date Posted: March-24-2022 at 7:19am
Sounds like a good number to me.  PCM listed a weight of 856 ish pounds in their 89 PCM engine manual with most likely a B/W transmission pictured in the manual and the older heavier starter. A little difference in carburetor and fuel injection components also. Throw in a little difference between scales and the numbers agree pretty well. Here's a link to M/W's old thread on weight savings and there's also a link to the PCM manual from 89 that gives some other engine weights too, (see chart on page 15) http://www.correctcraftfan.com/forum/forum_posts.asp?TID=42183&OB=ASC" rel="nofollow - link http://ww.correctcraftfan.com/downloads/PCM_Owners_Manual_Ford_and_Chevy.pdf" rel="nofollow - link to PCM manual
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Posted By: gun-driver
Date Posted: March-24-2022 at 7:34am
More important is...What's under the cover on the Triton 
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Posted By: jhersey29
Date Posted: March-24-2022 at 9:19am
| 2017 Skidoo Summit X 850 w 165 track and 3” paddles. |
Posted By: gun-driver
Date Posted: March-24-2022 at 10:12am
Nice!! I just got back from riding in Wyoming. I ride a 154 Freeride  |
Posted By: jhersey29
Date Posted: March-24-2022 at 10:54am
We ride mostly in Colorado. Vail Pass, Wolf Creek, Rabbit Ears, Jones Pass, Tabernash, Buffalo Pass, etc. If you end up out this way hit me up. Always looking for people to ride with.  |
Posted By: Jonny Quest
Date Posted: March-24-2022 at 12:29pm
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Damn! Y'all are just KILLING ME! ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: MrMcD
Date Posted: March-24-2022 at 7:48pm
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Great Pics of the snow, Thanks. I rode that area above Vail twice with a buddy. Very incredible terrain. The new machines ride so well and have such power it is hard to imagine unless you have done it. ------------- |
Posted By: MourningWood
Date Posted: March-24-2022 at 9:36pm
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The details listed above, and the resulting performance, did nothing for the '81 SN that I built it for. (the original goal there was to improve the wakes while adding some power). It was an honest 50 mph boat. I then transplanted that powertrain into the '82 SN (Cyndi) that I have, and sold the '81. As for the '82, the performance was increased substantially...subjectively. This being the 5th 2001 I've owned, it is clearly the best performing-powerwise. Over 50 mph...(GPS) So now working up the '94. I robbed the heads and intake (Edelbrock Performer series) and exhaust manifolds from the '82 and gave her the GT-40 heads from the '94. I've reworked the crank-driven cooling system a bit, but have yet to drive the '94 to report. Stay tuned...
------------- 1964 Dunphy X-55 "One 'N Dun" 'I measured twice, cut three times, and it's still too short!" |
Posted By: MrMcD
Date Posted: March-25-2022 at 12:12am
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Ready to catch the updates! I have been tempted to modify my GT40 for more power but they I take it out and it runs so good I just can't justify tearing it apart. ------------- |
Posted By: KENO
Date Posted: March-25-2022 at 6:04am
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Myself, I'd probably wonder more about why the engine is hanging there to begin with I'm thinking it's undergoing some gender transformation and turning into a Chevy
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