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V-8 Engine Tech

Inlet manifold to Holley sniper

Mopar Big Block Talk

by 2211/1445 » Sat Apr 14, 2018 9:32 pm

Hi, I have just bought an «inj» for my 440. Earlier I have used an weiamd + dual plane manifold, but I think thats not the best Choice with the Holley sniper system. I’m think I have to change to an single plane low rise like the Holey strip dominator.

Anyone with experience around this.

Erik
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by Steve Payne » Sun Apr 15, 2018 6:57 am

Any dual plane manifold will work as long as it has the correct bolt pattern for the throttle body and is not to tall.

Personally I have the Edelbrock on mine but I have seen others fitted.

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by 2211/1445 » Sat Apr 21, 2018 10:43 pm

I think it works good on you comander system, the sniper system are not so refine... The action+ inlet have the divider all the Way up- so I think I have to CUT it a bit.
Erik
Oslo
Norway
1975 Interceptor MK3 S4
1962 Renault Floride S
1966 Jaguar E type FHC 4,2
1971 Renault 12 Gordini GR 4
1974 Renault 17 Gordini Cabriocoach
1976 Alpine Renault 310/4
1978 Renault 17 TS
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by JACB » Wed Apr 25, 2018 7:57 pm

2211/1445 wrote:Hi, I have just bought an «inj» for my 440. Earlier I have used an weiamd + dual plane manifold, but I think thats not the best Choice with the Holley sniper system. I’m think I have to change to an single plane low rise like the Holey strip dominator.

Anyone with experience around this.

Erik

Hi Erik

Assuming your car is still a road car and the engine is still in most ways standard, I would stick with a dual plane manifold since it will still be a “wet” manifold even after the Holley Sniper system has been fitted. If you were going for port injection, then it would be a “Dry” manifold and I would also suggest a single plane replacement.

The Edelbrock performer RPM is very good manifold if you have the height in the engine bay? 383/440 & the height of the Holley throttle body will effect this.

Are you going to go for the Holley Sniper Pro (more software options) and are you thinking of controling the timing with the Holley system? If you are you will need a dual sink distributor (eg for the 440 = Holley 565-103) and a small adapter harness (Holley 558-493).

Keep us posted how things work out for you.
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by 2211/1445 » Thu Apr 26, 2018 1:45 pm

Its std. sniper, but i will change the dizzy after startup and run in :-) The inlet are wet, and I think both holley and fitech have problems when it comes to manifolds with the divider all the way up- so they work best with spacer, or lower divide like the rpm performer. The engine are some sort of std...... :roll: :roll: Sidejammer alu heads, pistons 10:1, new rods, hyd.roller(xr274hr), short headers...++
Erik
Oslo
Norway
1975 Interceptor MK3 S4
1962 Renault Floride S
1966 Jaguar E type FHC 4,2
1971 Renault 12 Gordini GR 4
1974 Renault 17 Gordini Cabriocoach
1976 Alpine Renault 310/4
1978 Renault 17 TS
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by JACB » Thu Apr 26, 2018 9:39 pm

Hi Erik

Philip Lochner Used the Edelbrock Performer RPM manifold and EFI ..... you may care to look at his blog in this forum and possibly make contact with him re his experiences. His blog is full of good tips, Eg the issues he faced with the Edelbrock manifold, his choice of throttle body and the IAC.

PS What are “Sidejammer” Cylinder Heads?
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by 2211/1445 » Fri Apr 27, 2018 6:02 am

Thanks- will check. Sometimes it goes to fast- its sidewinder heads. Regarding to mopar mecanics in Norway/Sweden they have better quality(Harder) on the alu than 440sourse, and even with upgradet springs, locks etc they are not exspencive. Hopefully the not only looks good, but work AS the schould also. I guess I find out during the summer...
Erik
Oslo
Norway
1975 Interceptor MK3 S4
1962 Renault Floride S
1966 Jaguar E type FHC 4,2
1971 Renault 12 Gordini GR 4
1974 Renault 17 Gordini Cabriocoach
1976 Alpine Renault 310/4
1978 Renault 17 TS
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by JACB » Fri Apr 27, 2018 12:14 pm

Thanks Erik

Sidewinder Heads ......OK. They look interesting from what I can see on google http://www.mopartsracing.com/parts/Sidewinder.html ... who actually makes them?

I see there is also the Promax head https://promaxxperformance.com/product/ ... -bb-mopar/

I was thinking about the Trickflow 240 or 270 heads with Porter Racing or Larry Smith doing a little work on them first.

Then there are the Edelbrock, Indy, Mopar, Bulldog and www.aeroflowperformance.com Heads ... This list seems to go on and on these days. It’s nice to have choice but it’s getting quite a task to work out what is best.

Keep us posted please with how you build works out.
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by 2211/1445 » Fri Apr 27, 2018 1:05 pm

Its an nightmare to choose heads... i was think about Indy EZ, but I want an engine with punsh also in the lower part, and I was afraid to have to big inlet canals.

They claim that its the same factory in China that makes the heads for Volvo that make them. I talked with a swede that have built 10 engines with them, and sold 30 pairs, and he said they was better than the other lowcost heads out there. I also talked to mopartsracing and he also said they was good, so I took a chance :-)

Will keep you posted- just have to put the pistons in first :-)
Erik
Oslo
Norway
1975 Interceptor MK3 S4
1962 Renault Floride S
1966 Jaguar E type FHC 4,2
1971 Renault 12 Gordini GR 4
1974 Renault 17 Gordini Cabriocoach
1976 Alpine Renault 310/4
1978 Renault 17 TS
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