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Pro Form 850 DP is 1.40 in venturi size. Holley 850 DP has 1.56 venturi. When looking in my notes this is the result with a SFT cam with dur 251@050. On a 1/8 track. All intake have been portmatch and a plenum clean up and running with 1" open spacer. Holley S/D with Pro Form 850 DP = 97,3...

I have a low deck 512 in a 3860 lb streetcar with 3.91 and converter that stall 4800. I have try a couple different carb/intake. Engine has 10.3:1 and TF 240 heads and a SFT cam dur is [email protected] First out I try a Holley SD intake and a Holley 850 DP (4781), second was a M1 S/P with a Pro Form...

I had the MP .528 cam in a 512 cu with 1.6 rockers. Static kompression 10.3:1. Cam install at 109* Cranking pressure was 165 psi if I remember correct. Well, it was a blast to driv on the street, boil the tires anytime I wanted. Have fun!!

I see a lot more body separation out back than I have. I must have som god side video that's for sure, so I can adjust from there. Next time out I hope I can concentrate on the shocks. Thanks for the video, its help.

Well, I just started with no preload and I don't know were to start. The pivot just touch the spring now, is it better with preload?

Thanks for your answer. What I can se from a video taken from a track with poor traction is there are no or miner separation between tire and body out back. Is there a rule of thumb how much body separation there should be? Im the only One around here that drivs Mopar so I have no one to ask...

I have D/A shocks front and back w Caltracs, I have adjust the bar so there are no preload. How do I adjust the shocks when the track has god prep vs No prep? Specs is: Weight w Driver 3860 lb 512 cu circa 600 hp (I guess here) Flashstall 4800 rpm 4.10 9x29" slicks bia-ply. Foot brake. hold...

Spicer (Dana) I'm usually have luck with Spicer, but this time I must have done something wrong... Gear pattern looks ok to me and I can not find any obvious errors. Spicer specs B/L to .006-.010 and I have .011 maybe that's the problem?

In this case both gears were from same manufacture so I just check the pinion depth on both and measure the old shimstack. If I remember right I hade to add .003 shim for the new pinion.

I measure the B/L and now its .011. I check over ring gear and cap bolts, all fine. Oil has no debris or metal flakes and looks as new. I check have to check the in & out slack on the pinion tomorrow. Mmmm! Yes, I know exactly what You mean about those crap shims..... :BangHead:

I use a power drill and had press on ring gear. Photo

I have newly built D60 that howl on highway, it start at 60 mph when coast. When accelerating or decelerating its more or less silent. Background: I set up gears with B/L 0.10 and use 80W-90 oil. It was dead silent in every rpm from start. Is it possible the B/L has increases now when all new...

I have made this tool for change valve spring when your engine is still in the car. Have done 4-5 valve spring swaps and work good even with " harder " springs.

Sparkplugg wire #5 and #7 cross or to close together?

New and old shocks are both 10,250 compressed, but my old is 16.500 vs 15.500 for the new one. I have to measure before I made an extension so its not gona be any problems either way.

Finally my new front shock showed up. Now when I put them on I realized that the shock is too short ( ext 15.500") and bottom out when I have removed the UCAs bump stop for achieve 5" travel. Is there a extension that can fix this?. Stock suspension on a E-body. Howe important is 5" front travel...

I may give the Holley 12-150 a shot and a1000-carbureted-bypass-regulator because I already have it. I have welded a sump in the tank with a AN-8 outlet and same size as a main line to the regulator and use the original 3/8" fuel line as a retur line. I hope this gona work.

Maybe if the tank and fuel pump is mounted in front of the engine. I think 1500hp is little optimistic. Fuel pump must fight against fuel filter, multiple bends/turns and G-force when accelerating.

I have a Holley 150HP pump on the self, its flow 140 GPH at 7-8 psi. Is this pump big enough with a AN-8 mainline to the regulator with a return line back to fuel tank?

Is this the pump you have? 12-150