Holley Sniper VS Fitech EFI? 396 SBC Stroker - Hot Rod Forum : Hotrodders Bulletin Board
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Old 06-22-2016, 07:59 AM
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Holley Sniper VS Fitech EFI? 396 SBC Stroker

ive been contemplating all these different ideas for this swap so i finally settled on building a 396 stroker since its not as common as a 383 and i picked up a 93 k1500 with a seized motor a few months ago really cheap it currently has 373 gears i found a nice already balanced assembly from scat here i wanted to run a set of machined vortec heads with better valve springs heres the rotating assembly i found Scat 1-41839BI SB Chevy 396 Competition Balanced Rotating Assembly - 11.2:1 CP Flat Top Pistons | CNC Motorsports | Car Parts | Truck Parts | Competition Engines


anyway wich is usually better in expirience or reviews Sniper EFI or fitech efi?

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Old 06-22-2016, 08:15 AM
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Since the Sniper EFI has not been released yet it is kind of hard to say.

Most of the reviews of the FiTech I have read have been good but as with anything there are those who are having problems.
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Old 06-22-2016, 08:46 AM
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Quote:
Originally Posted by TommyK View Post
Since the Sniper EFI has not been released yet it is kind of hard to say.

Most of the reviews of the FiTech I have read have been good but as with anything there are those who are having problems.
wich looks better to you in terms of style ? sniper actually got released on the 16th https://www.summitracing.com/parts/s...AfIhoC2Nzw_wcB i like the chrome styled one but fitech looks good too in chrome



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Old 06-22-2016, 09:35 AM
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You probably can't go wrong with either,but,if it were me,I would go with the FItech,since it's been out longer & seems to be doing well.
Not to get offtrack,but,you really need to have that block sonic tested to verify that it can be safely clearanced for the 3.875 stroke.You also need to look at your compression ratio for the heads & pistons you have chosen.Depending on your camshaft selection,use of vehicle,etc,your compression is gonna be way too high for those Vortecs & pump gas.Again,depending on the use of the vehicle,the Vortecs will be a little on the small size for a 396.

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Old 06-22-2016, 10:06 AM
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i could just build a good 383 then its just a daily driver/hunting rig
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Old 06-22-2016, 10:14 AM
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i could always throw together a 400 with a scat rotating assembly and a dart or blueprint block if i did that who makes the better block?

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Old 06-22-2016, 11:08 AM
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So as to not muddy up the original topic of EFI,maybe start another thread about the actual build.You will get more & better answers that way to both topics.I advise you to do so before buying any parts.
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Old 06-22-2016, 11:52 AM
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Wich works better via intake with the fitech systems single or dual pane? In an episode of engine masters for some reason with a holley system they had issues with a dual pane and switched it to single pane and it ran way better
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Old 06-22-2016, 01:38 PM
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Quote:
Originally Posted by DustyNova400 View Post
Wich works better via intake with the fitech systems single or dual pane? In an episode of engine masters for some reason with a holley system they had issues with a dual pane and switched it to single pane and it ran way better


Not a cut & dry answer,as there are so many variables that effect either.Such as,sequential,or,batch fire,tbi,or,mpfi,camshaft selection,gearing,etc, can all effect which would serve you better.
I haven't seen the article you mentioned on the Holley system,so,i don't know what issues they had with a dual plane,or,the setup they installed it on. Both systems above are TBI vs MPFI,so,it's still a wet flow situation,whaereas,an mpfi system would be dry,delivering air only.In a mild street engine,I would think the dual plane would work better with a TBI.
On setups where we have upgraded motors using TBI,we have replaced the stock GM manifold with the E'brock Performer & Performer RPM using an adapter for the throttlebody & they run great.


DIYautotune has some great articles on the carb to efi conversions & they did some manifold testing as well.I tried to post a link,but,it's not working.
www.DIYAutotune.com

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Old 06-22-2016, 08:42 PM
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Quote:
Originally Posted by DustyNova400 View Post
Wich works better via intake with the fitech systems single or dual pane? In an episode of engine masters for some reason with a holley system they had issues with a dual pane and switched it to single pane and it ran way better
Never seen an episode, but a square bore is a square bore. The FI Tech is going to respond similarly to the Holley system. In terms of which intake is best, it depends solely on application. For normal driveability, then the dual plane will be best. The same principles that apply to a carb build will apply to a TBI build IMO.

Regarding which system is better, the FiTech is relatively new with no durability results from something that hasn't been around for two years; the Holley being newer has the same issue. But for the price and the idiot proofness of both, I don't see how anyone can go wrong trying one out.
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Old 06-25-2016, 06:12 PM
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How soon do you need it? I ordered the FiTech along with a bunch of other goodies to accommodate it and I got everything but the FiTech kit and the fuel system in the mail, which was back ordered by 3 weeks. After 3 weeks rolled by summit (without saying anything) updated the shipping date to an extra 6 weeks, so I just canceled the order and now I have to return some of the stuff I ordered. I would have kept the order but I'm moving.
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Old 06-30-2016, 09:58 AM
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Based on appearance alone, I think the FiTech unit looks much better. And someone above made a good point about it being on the market longer. My guess would be there are thousands of them in service.

Summit Racing said they couldn't keep them in stock when my buddy ordered the $995 unit back in March. When he finally received it 5 weeks later, I helped him install it. We had a few issues but we worked them out with the help of FiTech's responsive and helpful Tech Support. It now works great and he's very happy with it. From cold start & warm-up manners to throttle response, it beats his old Holley 650 in every way. And I think I had the carb dialed in pretty well.
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