gjohnson

Wiped a lobe in my flat tappet motor and really dont want to tear it down and rebuild. Looking at a non bank buster motor for replacement. Anybody install this motor? I have 3.70 w 2500 stall. Thanks
https://blueprintengines.com/collect...er-cam-1pc-rms

jim-81

Blueprint makes some good stuff (it seems). Lots of good reviews on Summit for their long block 383's. I just purchased a 383 short block from them and am waiting for delivery any day. I think this would be a good low buck choice. Roller cam, vortec heads... - nice.

Vette5311

mobird

Blueprint has a really good reputation. Lots and lots of people run them.

Check out their 383 crate motor for about a grand more. You get a 420 hp aluminum headed motor.

CA-Legal-Vette

BigBlock77

You would be hard pressed to rebuild your engine to those specs at that price point. Where was this option and my common sense when I went down the big block path years ago? Good luck with what you decide.

ajrothm

A friend of mine has that exact SDPC 540/F1x crate motor in a small tire 70' Camaro and it runs 4.70s@140 in the 1/8.... so people definitely buy them... $50k is pretty reasonable for a 2000hp race motor...

ajrothm

Looks like a good bang for the buck package. You certainly couldn't build one that cheap. Remember you'll need the vortec style intake manifold as well. Can't go wrong with it for the money and 30k mile warranty.

speedreed8

buckwylde

I never realized Scoggin Dickey was popular outside of west texas, we just took it for granted I guess. They make a pretty decent race engine, only better race builders are in dallas.

gmcman52

Just had the shop install the 383 motor from summit(blueprint) they had a special for $4020.00 and free shipping. arrived in 7 days. They dyno the motor and it shows that it HP is rated at 436 and posted 456 ft Tq. . compare that to the std L48 rated at 165 HP.. I did have the old L48 bored over 030 to 355 cu. alum intake and headers and holley 650 card and it only mad 203 HP at the rear tires. So what I'm saying is don't waste any money improving the L48 and replace with the 383.

mobird

That is actually a really good improvement you made on your L-48! The stock 165 hp (or 180 depending on the year) is at the flywheel with all accessories attached, a stock L-48 tends to put down around ~130 whp on a dyno. So you picked up a solid 75 wheel horsepower (that is over 100 flywheel horsepower). I believe (someone correct me if I am wrong) that Blueprints engine dyno numbers are with no accessories. So after drivetrain losses and such that Blueprint 383 would most likely put down a little over 300 hp depending what transmission you are running. You should take it to the same dyno you took your L-48 to to see the difference!

jb78L-82

Correct^^^^^^^^^^^^. Almost every crate motor is rated at GROSS HP, NOT Net, like every car today and since 1972 has been rated at Net HP, not gross HP, which is very misleading. The only crate engines that are rated at Net HP are ONLY if the engine has or was installed in a production automobile. For example, you can buy a GM crate LS7 427 which is rated at 505 NET HP, just like it was in the C6Z06. GM does not list the LS7 as GROSS HP.

Post #11 is all over the board with Gross HP 383 ratings, Net Hp stock L-48 rating and then RWHP for the rebuilt/upgraded L-48 355...apples to oranges to tangerines. You cannot compare those ratings without a conversion factor of different percentages.

BTW-If you are going to install a crate motor, just go 383........Pretty good deal for $4K and 420 GROSS HP!!!

My only comment is the block is .040 bored so pretty much rules out any rebuild in the future if needed and the hyper pistons make me nervous since they don't tolerate any detonation and probably the reason for the 91 octane requirement to stave off any destruction, especially with a 10:1 compression and aluminum heads?

pauldana

OK....just did this with another forum member....

THERE IS NO REPLACEMENT FOR DISPLACEMENT

GO 396.... SKIP OVER THE WIMPY 383..


https://www.jegs.com/i/Blueprint-Eng...961CT/10002/-1

• HP & Torque: 491 HP / 509 FT LBS
  Compression Ratio: 10.4:1
  Aluminum Heads
  Hydraulic Roller Cam
  Forged Crank
  Forged Pistons

BLOCK:

• Hand picked seasoned block
  Square and parallel decked
  Align honed main bearing bore
  Cylinders honed on computer controlled machine to within .0002 straightness and roundness
  Cylinders are sonic tested for thickness
  4-Bolt Main
  4.000" Bored .040" Over
  1-Piece Rear Main Seal
  Mech fuel pump provision: Yes
  Passenger Side Dipstick
• Drilled and tapped for clutch linkage

ROTATING ASSEMBLY:

• New BluePrint Forged Crankshaft
  3.875 " Stroke
  Forged I-beam 6.000" connecting rods
  Forged Pistons
  Internal Front/ External Rear

CYLINDER HEADS:

• BluePrint Aluminum Cylinder Heads - HP8103
  64cc chamber
  2.08" intake/1.60" exhaust valves
  220cc intake/67cc exhaust runners

CAM SPECS:

• Cam Type: Roller
  .544 Intake .555 Exhaust
  230 Intake / 236 Exhaust duration
  @ .050, 110 ° lobe separation angle

IGNITION TIMING:

• 34 degrees total at 3500 RPM

ALSO INCLUDES:

• Valve covers, oil pan and timing cover
  Brass freeze plugs
  Dyno test results shipped with engine

WARRANTY:

30 month / 50,000 mileNOTES:

• *A bronze distributor gear is NOT recommended on this engine
  Not for use in pollution controlled vehicles.

https://blueprintengines.com/pages/dyno-promise

naramlee

My blueprint engine 408w in my mustang is great, had it about 6 years now and its a beast at almost 500hp, BP was great to deal with too at the time when i needed exact details on various tech details, i have never had a problem with it

Buccaneer

IMO the only things that really bother me about the motor you linked to is... Hypereutectic Pistons and a Cast steel crankshaft that it comes with. I would NOT put either one of these two items in ANY build I did no matter what. They are not meant for high performance applications, go forged on both of these items in your motor rebuild. Unless you are just a street cruiser kind of guy and never race it or get on it, then these would be ok I guess. I know there are plenty of guys out there that will say that Hypereutectic Pistons and a Cast steel crankshaft are fine, but I'm speaking from personal experience and went that route at one time to save a few dollars and cost me a whole new motor, block included.

jb78L-82

As Paul says, cheap buy twice...As long as you are well aware that a blueprint engine is making cheap HP and you are K with that aspect...go for it. Yes the steel crank also makes me nervous at those HP levels and beyond...Roulette....Just me

Agree also, if you are going bigger than a 355, GO BIG, 396/406 427 SBC!!!!

gjohnson

Thanks for the replys but a few of you missed my point. I dont want a bank buster. I want a decent driver/ cruiser. No I dont race it. If money wasnt an issue I'd have a 500 +HP FIRE BREATHER. Some of us just dont have unlimited funds for toys.My Vette is way down the priority food chain.
Thanks again guys!

pauldana

Actually, its a Russian saying, from my wife,.. and yea, she's Russian... and its "Cheap pays twice" and I have learned this lesson way way to may times,,,, not anymore..


How much money do you have to spend for the engine alone? But I will add this... as I stated on another thread, Some decisions are "Forever decisions" Like putting on a roof on a home... you can put up cement tiles, and tell yourself you will change it to Clay ... someday.... A. it will never ever happen.... or B. you paid for 2 roofs...
How long will you own your C3? 10 years? $1000 over 10 years is $100 a year... less than $8 a month.... is 100hp worth $8 a month, 8$? to me? yes...

naramlee

the problem is when u get the 500hp... after a month u want more 😋😁

my 408 from blueprint made 480hp and 515tq, and it was dirt cheap, 4800.00 i think... ive had two performance engines built, and neither is anywhere close to that price BUT they are ready for power adders without having to worry about them, but as they sit they dont make any more power than that cheap 408

to me, the blueprint engines are a great deal, just my .02 because with the prices of machining and parts and people just going up in general from inflation, now im going to carefully phrase this but... if your not a machinist with access to high end tools and you dont have any friends that are, and you are building an engine FROM SCRATCH (zero existing parts) you can NOT build a 500hp/tq engine for under 5k PERIOD

You can argue this all you want, start putting a price list together on summit /jegs if you still think you can build a budget buster for 2k and make even 400hp... I'll eat my shoe without sauce