C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

New motor for 81

Thread Tools
 
Search this Thread
 
Old Dec 29, 2016 | 02:50 PM
  #1  
shaun8484's Avatar
shaun8484
Thread Starter
Racer
Supporting Gold
Conversation Starter
All Eyes On Me
Photogenic
Liked
 
Joined: Sep 2015
Posts: 393
Likes: 21
From: Centreville, Maryland
Default New motor for 81

Ok, looking for honest opinions. I am deciding between buying a short block and a top end kit or just pulling the trigger on a drop in crate motor. I want to put a motor in and maybe rebuild the original over a period of time. What are the opinions you guys have as far as total cost and which one would be better. I don't have a lot of knowledge but I would like to build a motor at some point. I am not looking for some crazy speed demon, just looking for somewhere around 350 hp or so. Thanks in advance for the advice and tips.
Reply
Old Dec 29, 2016 | 03:07 PM
  #2  
mobird's Avatar
mobird
Burning Brakes
 
Joined: Mar 2016
Posts: 1,008
Likes: 163
Default

I'd vote for crate motor. For the cost of a short block and decent top end (don't buy a kit, they just aren't worth it) you could buy the Blueprint 383 crate motor. That thing makes 430 hp (a little over 300 at the wheels) for like $3800.


Is your current motor stock? If all you want is 350 hp, you can get that with a top end build on your current motor, assuming it's in decent shape. That's the route I went since I was on a budget. I upped the compression by installing 64cc Brodix aluminum heads and a .015 shim steel head gasket. That got me a little over 9:1 compression ratio with the stock dished pistons. Then I installed a Lunati 268 cam and lifters and a Performer RPM intake. Haven't put it on a dyno yet, but I've driven quite a few cars with 300-500 horsepower and I'd definitely say it's north of 300 hp.
Reply
Old Dec 29, 2016 | 03:13 PM
  #3  
shaun8484's Avatar
shaun8484
Thread Starter
Racer
Supporting Gold
Conversation Starter
All Eyes On Me
Photogenic
Liked
 
Joined: Sep 2015
Posts: 393
Likes: 21
From: Centreville, Maryland
Default

[QUOTE=mobird;1593755183]I'd vote for crate motor. For the cost of a short block and decent top end (don't buy a kit, they just aren't worth it) you could buy the Blueprint 383 crate motor. That thing makes 430 hp (a little over 300 at the wheels) for like $3800.


a turn key 383 for 3800?
Reply
Old Dec 29, 2016 | 03:37 PM
  #4  
cv67's Avatar
cv67
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Default

maybe a longblock?

Like building my own but unless it had to be some special app motor these days just buy a crate, go throught he original when you want.
Honestly once you have a modern stroker youll lose all interest in the original.
Reply
Old Dec 29, 2016 | 04:02 PM
  #5  
mobird's Avatar
mobird
Burning Brakes
 
Joined: Mar 2016
Posts: 1,008
Likes: 163
Default

[QUOTE=shaun8484;1593755215]
Originally Posted by mobird
I'd vote for crate motor. For the cost of a short block and decent top end (don't buy a kit, they just aren't worth it) you could buy the Blueprint 383 crate motor. That thing makes 430 hp (a little over 300 at the wheels) for like $3800.


a turn key 383 for 3800?


https://www.summitracing.com/parts/mll-bp38313ct1


Here you go. Just move your intake manifold and Qjet over to this engine and it's good to go. Or if you want they sell a dressed engine with carb and distributor for $4500.


I pretty much never hear a bad word about these engines, everyone seems to love them, especially for the price.
Reply
Old Dec 29, 2016 | 06:20 PM
  #6  
havesometo's Avatar
havesometo
Drifting
10 Year Member
 
Joined: Dec 2012
Posts: 1,360
Likes: 59
From: Meldrim Georgia
Default

[QUOTE=mobird;1593755560]
Originally Posted by shaun8484



https://www.summitracing.com/parts/mll-bp38313ct1


Here you go. Just move your intake manifold and Qjet over to this engine and it's good to go. Or if you want they sell a dressed engine with carb and distributor for $4500.


I pretty much never hear a bad word about these engines, everyone seems to love them, especially for the price.
That's the exact same engine I bought from Summit Racing and installed in my car.
I've had it for 2 years with no problem. Plenty of power for me.

$3600 http://www.ebay.com/itm/BluePrint-En...-/331753765452

Last edited by havesometo; Dec 29, 2016 at 06:25 PM.
Reply
Old Dec 30, 2016 | 11:20 AM
  #7  
mobird's Avatar
mobird
Burning Brakes
 
Joined: Mar 2016
Posts: 1,008
Likes: 163
Default

[QUOTE=havesometo;1593756433]
Originally Posted by mobird

That's the exact same engine I bought from Summit Racing and installed in my car.
I've had it for 2 years with no problem. Plenty of power for me.

$3600 http://www.ebay.com/itm/BluePrint-En...-/331753765452


Nice! I would have bought it by now, but I REALLY want to put together a small blower motor this year. Even though the Blueprint 383 would be decent for low boost levels, I kinda want something with a little lower compression and forged pistons just to be sure my motor will last with boost.


If I was sticking with N/A, that 430hp 383 would be more than enough for a quick street car.
Reply
Old Dec 30, 2016 | 11:26 AM
  #8  
cv67's Avatar
cv67
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Default

Those little st blowers are fun man does it transform a car
make sure they gap the rings for it when built & a cam that will compliment the blower. That way you can still drive it around NA but once adding the blower no need to worry about anything. Wont be ideal NA but still feel good.

Many yrs ago did a cheapie I mean REAL cheap 383 for a buddys Chevelle stockish cast parts with the cheapest forged piston we could find, a "wrong" isky ft cam 882 heads stock. It was ok na way better than the 307 but not exciting. Add the 144 blower and wow power was awesome for what it was. Pulled a heavy convertible with a stock converter and 3.08 gear real good.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Dec 30, 2016 | 01:12 PM
  #9  
shaun8484's Avatar
shaun8484
Thread Starter
Racer
Supporting Gold
Conversation Starter
All Eyes On Me
Photogenic
Liked
 
Joined: Sep 2015
Posts: 393
Likes: 21
From: Centreville, Maryland
Default

Havesometo, what "extra" things did you have to buy to get it into the car?
Reply
Old Dec 30, 2016 | 01:19 PM
  #10  
mobird's Avatar
mobird
Burning Brakes
 
Joined: Mar 2016
Posts: 1,008
Likes: 163
Default

Originally Posted by shaun8484
Havesometo, what "extra" things did you have to buy to get it into the car?


I'm sure Havesmeto will still respond, but just so you know, a 383 block is the same as a 350 block on the outside, so it just bolts right in. Same engine mounts, same transmission bolt pattern, etc... so you literally just pull your engine out, move everything you need to move over (carb connections, throttle linkage, etc...) and bolt the new motor in. Fairly simple if you have a weekend free.
Reply
Old Dec 30, 2016 | 01:22 PM
  #11  
c3_dk's Avatar
c3_dk
Safety Car
15 Year Member
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Jan 2008
Posts: 3,795
Likes: 435
From: Aarhus, Denmark
Default

Take the heads of, and make a leak down test of the short block.
Then you can decide, what to buy, a top kit, or a long block.
Reply
Old Dec 30, 2016 | 04:17 PM
  #12  
havesometo's Avatar
havesometo
Drifting
10 Year Member
 
Joined: Dec 2012
Posts: 1,360
Likes: 59
From: Meldrim Georgia
Default

Originally Posted by shaun8484
Havesometo, what "extra" things did you have to buy to get it into the car?
I bought everything new intake carburetor water pump harmonic balancer flywheel starter everything new.
I do remember talking to blueprint and they said I needed a flywheel for a 1987 and up but I don't remember what year. I would imagine you could put some of your old parts on it.

Reply
Old Dec 30, 2016 | 05:23 PM
  #13  
BluePrint Engines's Avatar
0BluePrint Engines
Former Vendor
 
Joined: Jun 2012
Posts: 145
Likes: 13
Default

[QUOTE=mobird;1593760223]
Originally Posted by havesometo



Nice! I would have bought it by now, but I REALLY want to put together a small blower motor this year. Even though the Blueprint 383 would be decent for low boost levels, I kinda want something with a little lower compression and forged pistons just to be sure my motor will last with boost.


If I was sticking with N/A, that 430hp 383 would be more than enough for a quick street car.
Hey havesometo

If you are looking for a blower ready 383 stroker. check out this engine we build just for that. It features an all forged rotating assembly, 8.5 compression pistons, our 195cc aluminum heads, and a Comp Cams blower specific hydraulic roller camshaft.

http://blueprintengines.com/index.ph...ase-bp38316ct1

We also just started building this engine with our new block castings, part number BP38317CT1. They are not yet on our website, but you can read about it on Summit's website.

https://www.summitracing.com/parts/mll-bp38317ct1

We would like to thank everyone for your support of our engines here.

Scott Liggett
BluePrint Engines
Product Specialist
1(800)483-4263
info@blueprintengines.com
www.blueprintengines.com

Last edited by BluePrint Engines; Dec 30, 2016 at 05:30 PM.
Reply
Old Dec 30, 2016 | 05:25 PM
  #14  
BluePrint Engines's Avatar
0BluePrint Engines
Former Vendor
 
Joined: Jun 2012
Posts: 145
Likes: 13
Default

[QUOTE=mobird;1593760223]
Originally Posted by havesometo



Nice! I would have bought it by now, but I REALLY want to put together a small blower motor this year. Even though the Blueprint 383 would be decent for low boost levels, I kinda want something with a little lower compression and forged pistons just to be sure my motor will last with boost.


If I was sticking with N/A, that 430hp 383 would be more than enough for a quick street car.
Hey havesomoto

If you are looking for a blower ready 383 stroker. check out this engine we build just for that. It features an all forged rotating assembly, 8.5 compression pistons, our 195cc aluminum heads, and a Comp Cams blower specific hydraulic roller camshaft.

http://blueprintengines.com/index.ph...ase-bp38316ct1

We also just started building this engine with our new block castings, part number BP38317CT1. They are not yet on our website, but you can read about it on Summit's website.

https://www.summitracing.com/parts/mll-bp38317ct1

We would like to thank everyone for your support of our engines here.

Scott Liggett
BluePrint Engines
Product Specialist
1(800)483-4263
info@blueprintengines.com
www.blueprintengines.com
Reply

Get notified of new replies

To New motor for 81





All times are GMT -4. The time now is 01:03 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE