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I ran one that was made in Australia on my 408, my 434 runs a Innovators West damper.

The axles aren't usually the weakness in an 8 3/4, the pinion tries to climb the ring gear and breaks teeth off. IIRC Dr Diff has the gears to change to 35 spline axles. My 408 broke the 8 3/4 in my Dart on the second pass it hooked up, the Richmond gears had about 60 passes and a couple...

If you are going to use rail type fuel injection there is no need for a dual plane.

Diamond made my 4.09" pistons.

Even if it flashes 5k you won't be driving around at 5k. The last three converters I've had all flashed over 5k and I drove them a lot. It may not be ideal but if you can't have it re stalled or trade it, run it. BTW put a good dual plane on it, you'll be happy you did.

69 Dart, 3320, pump gas street/strip small block, 6.44 @ 107.10.

K-1 is a good crank, I had one in my 408. My 434 has a BPE 4.125" in it, my only complaint is the damper key way is 2.5° off.

As crackedback said, get the timing right then work on the carb.

Home - PAC Racing Springs

Call PAC.

To small for me.

A 950 HP is a 850 1.750" base plate with a 750 1.375" venturi main body, they flow in the low 800 cfm range. I had a Bigs 950 HP with a 1.40" venturi on my 434, I replaced the main body with a BLP 1.59" billet main body. BLP told me it would flow 1050-1100 cfm, it's a lot cheaper than buying...

What size are the high and low air bleeds. Check and make sure there isn't trash in one. Drive it again with and check your vacuum when it acts up. You may need a power valve that opens sooner.

I hope you have an extraordinary set of X heads for that cam. I ran 11.6's with a 11.4-1 340, hydraulic cam, ported Edelbrocks, 4.30 gears, pump 93 at 3240 pounds.

Yes as mentioned call Ross and see if that piston is comparable with open chamber E heads. Personally I'd prefer to have a closed chamber head and a piston with enough quench dome to get the compression I wanted.

What pistons are in it, ft or dome?

No way I'd ever run a eagle cast crank i anything. I've seen them break behind the #1 main journal even in mild combos.

Do what yellow rose suggested and you'll be golden. I always thought it was funny listening to guys brag about turning their stock or near stock engines high rpms. Will they turn up? Sure. Will they make any power there? Not much. I out ran a bunch of high winding small blocks by only turning...

I'd say the spring pressure required for a solid roller has a bunch to do with the failures too. Application, application, application...........use the right tool for the job the first time.

My K1 has been fine.

Never dynoed my 408 but did experiment with shift rpms. I tried everything from 6000 to 7000 rpms, anything below 6400 or above 6600 it would slow down so i shifted it at 6400.

Thanks for posting. It would be interesting seeing what both intakes would do with a bigger carb.

My street/strip 408 was close to the 600hp range, I ran it for six years before pulling it to freshen. It showed signs of block flex in the main and cam bearings, IMHO a girdle would not help. Also four bolt mains in a stock block will not help block flex either, cap walk, maybe. I'd save my...

He doesn't know, the pressure gauge is under the hood.

I'd check the filters and even remove them just to make sure.

Where is the fuel filter?

I see in your photo the fuel pressure gauge is on the carb fitting. Have you verified your fuel pressure while driving?

It's leaning out while you're driving it or just revving it up with no load?

Exhaust Header Bash! Testing Power Loss From Dents - Engine Masters Ep. 4 - YouTube Header Theory Dyno Test - YouTube

Thanks Brian.