Measuring for Correct Pushrod Length in my SBF

Рет қаралды 2,138

8 ай бұрын

In this video, I use a Comp Cams 7701-1 pushrod length checking tool in order to determine the correct pushrod length for my engine. While this is a stock 289 block, I am running a Comp Cams 31-1000CPG retro-fit hydraulic roller cam kit with Comp Cam 851-16 roller lifters, a Comp Cams 31-601-8 Thumpr Cam, AFR Renegade 185 Series heads, and Scorpion SCP1018 1.6 ratio roller rocker arms. The stock pushrod length is 6.8 inches, but that is too long for this application. Using the tool, I determined that the correct length was 6.5 inches, so I ordered and installed a set of Comp Cams 7767-16 pushrods.

Пікірлер: 14

@LoBelly 8 ай бұрын

looks like its going to be a nice little mill - enjoying watching your progress 👍

@billsgarage 8 ай бұрын

Thanks!

@Burnedtoastify Ай бұрын

Great advice in this video... We built up a '96 Explorer motor (5.0 HO/GT40) and installed a TFS1 cam, spring kit and new head gaskets. Lots of tapping on start up. Turned out we needed to go from the stock 6.250 pushrods up to 6.300.

@billsgarage Ай бұрын

That's a noise that will definitely get your attention! Thanks for watching.

@renc3920 4 ай бұрын

Very handy and in-depth instructional. I'm just finishing doing some light port work on a set of gt40p's and this video just might come in handy for next steps. Thanks!

@billsgarage 4 ай бұрын

Awesome, glad to help - good luck and thanks for watching!

@kevdaceo 8 ай бұрын

Great info as my brother and I will be working on a 351w build

@billsgarage 8 ай бұрын

Awesome, good luck with your project!

@eddiearchuleta615 7 ай бұрын

Does this need to be done with the head gasket on and torqued down? Also I have a 289 set up with comp cam magnum 280h flat tappet cam with flat tappet lifters I’m ordering the afr 165 with the flat tappet cam spring exchange but using 1.6 Harland sharp roller rockers I wonder what length I’m going to need

@billsgarage 7 ай бұрын

The head gasket should be in place, but you can just snug the bolts/studs, no need to torque them for this check.

@eddiearchuleta615 7 ай бұрын

Awesome thank you can’t wait getting the c4 trans rebuilt and a 3500 stall converter will be going in hoping for 400 or so hp car only weighs 2700 lbs

@johnnyhonda7576 19 күн бұрын

Is this a hyd roller or tappet engine? What did you do to keep them pumped up? Just soak them?

@billsgarage 12 күн бұрын

It's a hydraulic roller cam, but there's no need to worry about keeping the lifters pumped up if you install checking springs on the valves. The springs inside the lifters are stronger than the checking springs installed on the valves, to the lifters will not collapse when opening the valves.

@johnnyhonda7576 11 күн бұрын

@@billsgarage if you have a hydraulic roller pumped up, will it stay pumped up thru 2 revolutions of a engine if not using checking springs, for final valve adjustment?