Looking for new intake for my 555

[1nicenova]

Hope everyone had a great winter. Its time to put the snowmobiles away and dig out the car. Dusted it off the other day & took it for a short ride around the neighborhood. The roads are still very cold, left alot of stripes out there. Only looking to do a few changes this year. Hoping to get into the 9's on motor & hit 150 on the spray. Just ordered a set of 3.73 gears to try 1st in place of the 4.11s I have now. Might also send my converter in to be loosened up a bit. Only sixty footing in the low 1.5's. Also going back to ET street radials instead of the plain et streets.
Questions I have is i think I have some power left in my intake. Right now I have an out of the box Professional Products single plane intake on it that came off my previous 582. Looks like a vic jr. copy. My 555 is 10.86 comp. with afr 335 cnc'ds & a bullet solid roller .731 .729 & 266 272. Also has a Pro systems 1200cfm dominator. Exhaust is 2 1/8 lemons with 4" x-pipe exhaust & dynatech mufflers.
Looking for some input on a better intake. Either a sniper or sniper jr, Super vic., Merlin X, dart or brodix. Leaning towards the one of the snipers. From what I've read most are having good luck with them. But unsure if the plenum is to large on the sniper for my relatively low compression & the sniper jr. would be the better choice. All the others seem like viable choices as well.
Wondering also if my intake is the reason my 60's suck or is it from the tight converter.Only stalls 3600 on the brake and flashes to around 5200. Its a 9" xhd low stall from trans specialties and was original bought to use behind my old 582 with the longer stroke & more torque and did 60 in the 1.40's. Thanks for your input.

[DOTracer]

There's only one intake for your combination and that's the Edelbrock 454R. All the others are too large in the plenum. Sniper/Jr both need port work to show potential.

Also, your 1200 cfm carb is way too large for a milder pump gas 555.

I ran the numbers on your all motor pass spec in your sig and your not even showing 700hp at the crank. Something is terribly amiss to have a pump gas 555 not make a solid 800 hp. You should be running mid/upper 9's easily even at 3600 lbs.

On motor the 3.7's gears are the wrong choice as is the "tight" converter. Your sitting on some ET IMO with a properly matched custom converter, smaller carb, and the 454R intake.

Glide or a 3 speed?

[1nicenova]

There's only one intake for your combination and that's the Edelbrock 454R. All the others are too large in the plenum. Sniper/Jr both need port work to show potential.

Also, your 1200 cfm carb is way too large for a milder pump gas 555.

I ran the numbers on your all motor pass spec in your sig and your not even showing 700hp at the crank. Something is terribly amiss to have a pump gas 555 not make a solid 800 hp. You should be running mid/upper 9's easily even at 3600 lbs.

On motor the 3.7's gears are the wrong choice as is the "tight" converter. Your sitting on some ET IMO with a properly matched custom converter, smaller carb, and the 454R intake.

Glide or a 3 speed?

Trans is a t-400. Reasoning for going to 3.73's is this is also a street driven car. And does absolutely nothing but spin on the street with the 4.11's. I'm also taching 7200 to 7300 @ 142 on the small 125 shot I did last year. If I step up to a full pass 150 or better I would be spinning it alot higher. I know the converter is tight thats why I want to have it restalled after changing gears and see how that responds. I have no doubt that a looser converter would 60' better. If it 60'd in the 1.30's where it should there's 9.90 right there. I have thought about trying another dominator. This one was built by Porsystems for my old pump gas 582. When I called Patrick about the new 555 he said it should be fine for it.

[MudWild680]

Running an Edelbrock 454 are our 555

[1nicenova]

Gears are going in now. Having fun shimming getting the right pattern. This 3.73 ring gear on the 4 series spool is awful thin. I hope it holds up. Talked to Patrick at pro systems and after giving him the best description I could of how the car runs both track and street he agreed that the 1200 is to big for my motor & will build me a smaller carb that will flow in the 1060 - 1080 cfm range to help pick up the 60'. Will also be going to 454r intake. #2907. Any advantage to the cnc version that is worth the extra dough. Or will a good port match and casting clean up do the trick?