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#1
02-13-2020, 04:19 PM
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Romac balancer
Looking to build a 450-500 HP ?? street motor.
Is Butlers Romac acceptable or is there something better ? Throw out your pennies gentleman. Thanks, OGR
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 3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" |
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#2
02-13-2020, 04:22 PM
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What RPM range is it tuned for? What RPM range are you likely to spin that engine?
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#3
02-13-2020, 04:25 PM
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I dont think it will be anymore than 6000
Block is still in the shop
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3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" |
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#4
02-14-2020, 08:45 AM
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Very nice balancers. Have one on my 400 w stock pan which needed a little work. Have another on my 467 w aftermarket pan that I shift at 6k.
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Chris D 69 GTO Liberty Blue/dark blue 467, 850 Holley, T2, Edelbrock Dport 310cfm w Ram Air manifolds, HFT 245/251D .561/.594L, T400, 9" w 3.50s 3905lbs 11.59@ 114, 1.57/ 60' |
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#5
02-14-2020, 08:51 AM
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Just keep this in mind, the bigger the stroke, or the more rpm, or the combination of both calls for a heavier then stock Balancer, HP levels have nothing to do with it!
This very true for a cast Crank motor where you want to keep from forcing it to have to flex! The balancing of the Crank itself is where HP levels ( cylinder pressure levels ) and other factors are dealt with as best as possible!
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#6
02-14-2020, 04:49 PM
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I thought the romac had fitment issues, like hitting the pan lip and timing cover, and pulley bolt pattern? I used the Pro/Race 64275 SFI unit, fits like stock but is 9lbs and is SFI rated. Have not fired the engine but it fit perfectly.
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I could explain all this to the girl at the parts store, but she'd probably call the asylum. White '67 LeMans 407/TH350/Ford 3.89... RIP Red '67 LeMans. 407/TH400/Ford 3.25 |
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#7
02-15-2020, 10:02 AM
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I have one and looked nice in the box but had issues also with figment. It was 0.0015 to small. That was a pain to get rectified. Next as mentioned had to grind the timing cover a little not impressed. I would think that some type of information sheet should have been provided on modifications. The vendor I used said ya this is common.
It is nice unit but be prepared for a little work. |
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#8
02-15-2020, 10:49 AM
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I posted in the other thread. I have used the Romac for many years on my 421 combos. Spin it 7200-7300 every time out. Never had an issue. Did have to bend the lip pan a small amount.
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66 GTO Nostalgia Super Stock/Street Legal Car 421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99 Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
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#9
02-15-2020, 11:39 AM
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Quote:
I have 3 of those on 3 different motors.
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3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" Last edited by Old Goat Racer; 02-15-2020 at 11:50 AM. |
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#10
02-15-2020, 11:54 AM
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I've ran the Romac balancer for years on my street car with a stroked 400(461), and have never had an issue. I have the Romac that is Steel with the Aluminum outer ring. Very nice balancer in my opinion, and fit great, it did require just a tiny bit of bending of the lip on the front of the oil pan, but is a super easy fix that can be done in a few minutes. I also run the billet Rollmaster Timing Set(same company), very nice as well, and uses the IWIS chain.
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1978 Trans Am Pump Gas 461 Stroker |
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#11
02-15-2020, 07:01 PM
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You may also want to consider a Powerbond SFI balancer. It's also a nice piece. I have one in a 500 hp street motor for 7 years and no problems. Fits perfect and accepts stock pulleys.
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#12
02-16-2020, 11:24 AM
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A second on the Powerbond SFI.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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#13
02-16-2020, 12:32 PM
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Are Pioneer balancers any good? Specically the Pioneer-872011 street balancer and the Pioneer-872031 race balancer. Thanks, all.
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"No replacement for displacement!" GTOAA--https://www.gtoaa.org/ |
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