Go Back  Offshoreonly.com > Owners Forum > Scarab
Engine options >

Engine options

Notices

Engine options

Old 05-06-2021, 11:07 AM
  #11  
Registered
 
Join Date: May 2018
Location: Western Pennsylvanoa
Posts: 431
Received 63 Likes on 48 Posts
Default

I had the newer model, a 1989 w/SBC and I think they optioned BBC/330hp starting 1990. Not sure if hull bottoms were the same, but mine had a pad.
PA.WOODCHUCK is offline  
Old 05-06-2021, 01:08 PM
  #12  
Registered
Thread Starter
 
Join Date: Apr 2021
Posts: 16
Received 2 Likes on 1 Post
Default Scarab 1 engine options

Has anyone put a high revving 302 chevy small block in a 21' boat
Jim Fletcher is offline  
Old 05-06-2021, 04:29 PM
  #13  
Registered
 
Join Date: May 2010
Location: Red Oak, Texas
Posts: 896
Received 99 Likes on 52 Posts
Default

Originally Posted by Jim Fletcher View Post
Has anyone put a high revving 302 chevy small block in a 21' boat
Drive becomes a problem I think. Max designed rev is around 5-5200 for Alpha. I've turned them 55-5600 without issue (blower was the issue...different story)
CDShack is offline  
Old 05-06-2021, 05:05 PM
  #14  
VIP Member
VIP Member
 
Join Date: Nov 2005
Location: Wichita, Kansas
Posts: 269
Received 84 Likes on 49 Posts
Default

Originally Posted by Jim Fletcher View Post
Ive seen a few of the members scarab1 boats & mods turn out really good, & wondering if anyone has one of these older 21' scarabs with the bbc installed & if it drastically changes the handling characteristics of the boat, also the boat does not have trim tabs, are they a must with a big block?
Not sure how relevant this is...but just throwing it out there...I have a 21' Baja with a big block in it, it does just fine without tabs. It's got a 17 degree deadrise...not sure how that compares to your Scarab? Weight is around 3,500 pounds.
bajaman is offline  
Old 05-06-2021, 06:45 PM
  #15  
Registered
iTrader: (5)
 
Join Date: Jul 2009
Location: Taunton Ma
Posts: 8,054
Received 273 Likes on 146 Posts
Default

The big block wasnít offered before merc had a good option for a drive without a transmission. Bravo drive wasnít available until Ď88.

plenty of later small block options that donít include the old school thought of a dz302
Unlimited jd is offline  
Old 05-06-2021, 09:15 PM
  #16  
Registered
Thread Starter
 
Join Date: Apr 2021
Posts: 16
Received 2 Likes on 1 Post
Default

Originally Posted by bajaman View Post
Not sure how relevant this is...but just throwing it out there...I have a 21' Baja with a big block in it, it does just fine without tabs. It's got a 17 degree deadrise...not sure how that compares to your Scarab? Weight is around 3,500 pounds.
what kind of speed does it run, & u pull skiers also?
Jim Fletcher is offline  
Old 05-06-2021, 09:58 PM
  #17  
Registered
Thread Starter
 
Join Date: Apr 2021
Posts: 16
Received 2 Likes on 1 Post
Default Engine options scarab 1

Ok i hope im not entering this twice, but when i submitted it, it disappeared, may have deleted, i am new here and hope this isnt a dumb question but just like tricking out a motor & making it twice as good, can the alpha 1 outdrive be "tuned up" or made better like maybe spin balance shafts, gears, upgrade to harder metals at weak points. And curious what is a ballpark figure to upgrade to the bravo 1?

Last edited by Jim Fletcher; 05-07-2021 at 12:18 AM.
Jim Fletcher is offline  
Old 05-07-2021, 06:39 AM
  #18  
Platinum Member
Platinum Member
 
resurrected's Avatar
 
Join Date: Jan 2005
Location: Owen Sound Ont.
Posts: 774
Received 184 Likes on 112 Posts
Default

I don't know of any modifications to improve the strength of the Alpha, it's just plain small. I have sold used Bravos with transom assy in good condition for $3,500.00. Good used parts are out there, you just need to be patient.
resurrected is offline  
The following users liked this post:
CDShack (05-07-2021)
Old 05-07-2021, 07:33 AM
  #19  
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 11,306
Received 998 Likes on 421 Posts
Default

Originally Posted by Jim Fletcher View Post
Has anyone put a high revving 302 chevy small block in a 21' boat
Valid question, but would be a waste unless they had one and just had to do it. Cubic inches are your friend. 350/383/406 much better small block choices. I have not been in a ScarabI with big block, so canít answer how they handle.
SB is offline  
Old 05-08-2021, 05:26 AM
  #20  
VIP Member
VIP Member
 
Join Date: Nov 2005
Location: Wichita, Kansas
Posts: 269
Received 84 Likes on 49 Posts
Default

Originally Posted by Jim Fletcher View Post
what kind of speed does it run, & u pull skiers also?
Mid-to-high 60s with a 21" labbed Mirage. Great for watersports, I used to ski and kneeboard a LOT before I got old, lol!
bajaman is offline  

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.