Blueprint vs ATK Engines
 

I'm looking at these two engines for my 64 stepside. Slight differences but one (ATK) has a 4 bolt mains and the other (Blueprint) has 2 bolt mains. Heads are a bit different. I am using an 11" brake booster and am concerned about vacuum so I am leaning toward ATK. Both have roller lifters, vortec heads, one piece rear mains and can use a mechanical fuel pump. Blueprint says they dyno theirs. ATK does not however. This could be an issue also, since now I'm reading feedback from other forums less favorable to ATK.
Whats your take?
1. http://www.high-performance-engines....0hp-p/hp32.htm
http://cdn3.volusion.com/zcarq.lhmhc...jpg?1424622689
2. https://blueprintengines.com/collect...lock-bp3503ct1
https://cdn.shopify.com/s/files/1/21...g?v=1527860620

Re: Blueprint vs ATK Engines
 

I'm no expert, but at that power level, I don't think the two bolt main is a huge issue. I would vote for the Blue Print one.

Re: Blueprint vs ATK Engines
 

i just got this L31 96-03 4 bolt votrec long block new from gm no reman . https://www.ebay.com/itm/GM-OEM-NEW-...nA85:rk:3:pf:0

plan is run it at the 290hp and if i want more swap the cam and get the 330-350 hp level in a year . if carb just add a 40-50 buck electric fuel pump ( and great anti theft device with hidden switch ) and good to go for less money .

my friend has been reading up on all these house brand reman / performance engines and its a roll of the dice just pick one . he thinks he has it and then finds more bad on this one . then more bad on this one . . . its just gamble in the end .

Re: Blueprint vs ATK Engines
 

Thanks I havnt heard anything bad on them.
Looks great but I do want to go with a mechanical fuel pump. At least on this truck.

Re: Blueprint vs ATK Engines
 

I have a coworker that purchased a 383 from blueprint over the summer and has been very pleased with it.

Re: Blueprint vs ATK Engines
 

From what I have read and seen online, I would lean towards the Blueprint engine. Plus having the engine ran and dyno'd is a bonus. If by chance there was any issue in the assembly, it would show up on the dyno and they would fix the issue.

Re: Blueprint vs ATK Engines
 

All I hear is good things on them, thanks.

That's my opinion also thank you - Captainfab what are your thoughts on the cam size for the brake booster on the Blueprint engine?
Okay I just read where a guy installed the this Blueprint engine and got = idle at 16 in. vac. and at 2100 rpm - cruise 21 in. vac. idles at 800 rpm very good. So I think that puts that to bed. :)

Re: Blueprint vs ATK Engines
 

[QUOTE=
Okay I just read where a guy installed the this Blueprint engine and got = idle at 16 in. vac. and at 2100 rpm - cruise 21 in. vac. idles at 800 rpm very good. So I think that puts that to bed. :)[/QUOTE]


Don’t believe those numbers. I wouldn’t.
Where did he live?
What was his timing curve like?
That effects his fantasy numbers.

You want the best chance of higher vacuum then look for a cam with wider lsa’s.
The blueprint is 110. The atk 112.
Better chance of more vacuum with the atk.

Re: Blueprint vs ATK Engines
 

Thanks, didn't even consider that.
On 112 vs 110 I read where Grumpy said "short answer, 110 LSA if its a engine used mostly at high RPM, 112 LSA if its street driven" _ I'm a street driven guy myself.
I sent a request for information to Blueprint though asking if it can be built with a milder cam.

Re: Blueprint vs ATK Engines
 

atk use to sell reman engine to advance auto and local parts stores i've used a couple one in my f150 it ran good but always had oil pressure issuses it run lower pressure then i like or the oil pressure wandered alot, other was a reman 2.8 that in my bosses s10 blazer it runs good i installed like 6 years ago i bought the engine with the timing covers and pans already installed, fast forward to last year it starts leaking coolant out of the timing cover where it meets the block pull the timing cover and find out that the timing set is wore out , and now the vavle seals are leaking and we've only put 20k miles on it in 6 years so i stay away from atk engine now

Re: Blueprint vs ATK Engines
 

Demiiiiiiiiit. :ito:

Re: Blueprint vs ATK Engines
 

I wouldn't bother asking for a cam swap. I would just go with the engine sweetk30 purchased( a damn nice engine) and deal with the electric pump.

I had BP send me the dyno numbers of BP3503CT1 vs the 383 BP38313ct1. They run pretty close. I like the easy drop in and cost. Reman never bothered me on driver/work vehicles.

I'm still weighing my options as well, but this 350 is on my mind.

Like said, it's all really a crap shoot... that's why they give warranties. BP Dynos and that's a nice extra. Once one of us gets one of these, then we can better eval the BS meter! BP seems pretty proud of the 3503CT1 for the Cost or power! :chevy:


j

Re: Blueprint vs ATK Engines
 

here is my thread on the info these guys here gave me on the gm vortec L31 4 bolt . helped me pic it for the price / quality / easy power bump later options.

http://67-72chevytrucks.com/vboard/s...d.php?t=763121

and as others said a 40-50 buck electric fuel pump to save you 400-500 bucks seems like a win .

Re: Blueprint vs ATK Engines
 

An electric fuel pump will not be an option for this truck!

Re: Blueprint vs ATK Engines
 

I'm not convinced the 400-500 is bad for someone who want's(or needs) to stay with a manual pump. But, if you're going to reconfigure the motor, why bother. It's a setup, whole point of the crate is an easy button type scenario, in my eyes.

Also, " Reman never bothered me on driver/work vehicles." that's just stupid. I'll use a seasoned block on lot's of stuff, lots of good stuff sitting in side yards. Mouth got ahead of the brain. I really want to say that about 2bolt vs 4bolt. Accept my correction... :uhmk:


j

Re: Blueprint vs ATK Engines
 

While a cam with a 112LSA will produce better/more vacuum than a cam with a 110LSA, I don't know if it will be enough difference to affect the operation of vacuum assisted brakes. Do you have a dual diaphram brake booster Rod? Ask the people at Blueprint and see what they say about the proposed idle vacuum.

Re: Blueprint vs ATK Engines
 

Thanks Cap. I have a single diaphragm 11" booster so I know it's going to need some good vac. I sent them a request for info as well but with the holidays and all... ;)
I'll follow up with the answer probably Monday?
Wow the only ones I find with everything on my list run for much more money, like this one - https://sdparts.com/i-24104130-chevr...te-engine.html
I may have to save a bit longer.

Re: Blueprint vs ATK Engines
 

The ATK engine you have listed in post 1 is re-manned...

Blueprint does NOT do reman stuff, ALL their engines are NEW!!!
Blueprint makes their own block and heads in THEIR factory in Kearney, Nebraska. They may make other components as well. I've looked at their website several times. One of the things they advertise, is that EVERY engine is dyno'd before leaving their factory, That sounds crazy. The website even stated that along side a short block, they sell.

I've never heard anything bad about Blueprint stuff. I'm sure there may be a few unhappy customers out there, but a lot of folks don't have any business working on or swapping engines........'ya know there's a lot of shade tree's...everywhere...

Re: Blueprint vs ATK Engines
 

68Gold/white - Thank you for the feedback.
In this case they're web site say's: "...seasoned block"
In this case I think you mean they build their own engines, not "make their own block and heads". Just a thought. ;)

Re: Blueprint vs ATK Engines
 

No, they cast their own blocks AND heads. It's serious deal. Not everyone knows this. Go to their website......

Re: Blueprint vs ATK Engines
 

They do cast some of their own blocks (SBC 400 for one) and their line of aluminum heads, but they do also use OEM blocks and heads in their engine builds.

Re: Blueprint vs ATK Engines
 

BP3503CT1 has seasoned block and heads. :chevy:



j

Re: Blueprint vs ATK Engines
 

i have that exact BLUEPRINT engine...it is not machined for a mechanical fuel pump. it also came with a 399.7 hp / 407 tq dyno sheet ( more than advertised), they run it with a 600 cfm carb. i hope to push close top 420 hp on pump gas.

i have only had it running for say 20 minutes so far. cleaning up some appearance details.

check out my 88-98 build thread ( project wide body)

Re: Blueprint vs ATK Engines
 

Ya, when I corresponded with them, they said to contact them before ordering so they could ensure setup for mech pump and clutch linkage drilled and tapped.

Nice! I think those number show a great value in this engine. Keep us posted, what carb intake and exhaust are you using... if you don't mind my asking? :chevy:

j

Re: Blueprint vs ATK Engines
 

Exactly.