598 SCJ Build

Well we skipped last saturday because we ran out of parts. The pistons and cam showed up yesterday so we are going in sat and we should start making alot of progress on the short block. The cam we ended up with is a custom comp. 281, 296 duration @.050 113 lobe sep. Lobe lift is .470 on both lobes which is .813 with a 1.73 rocker.

derek528 wrote:Well we skipped last saturday because we ran out of parts. The pistons and cam showed up yesterday so we are going in sat and we should start making alot of progress on the short block. The cam we ended up with is a custom comp. 281, 296 duration @.050 113 lobe sep. Lobe lift is .470 on both lobes which is .813 with a 1.73 rocker.

Nice build "derek528", any progress lately? THNX MAVMAN

Yeah, the block is fully machined, cleaned, plugged, and the cam bearings are in.. The heads were cnc'ed last week. Tomorrow we are going to pin fit the rods, file the rings, and hopefully assemble the short block. The crank is balanced and ready to go in. I'm ready to hear it run, And see what it does on the dyno. Hopefully It will be done by the end of may.

The short block is now assembled. Cam is in, it's 3.5 degrees advanced. Next weekend we will assemble the heads. Pushrod lengths ended up at 9.050 intake, and 9.150 exh. Geometry looks good with the crane gold wide body rockers, we ended up with .830 gross valve lift, when measured off the retainer.
I did get some flow numbers. They ran the same cnc program on another set of heads. The customer decided to have them flowed. The only difference is that my heads have a 2.25 valve and the ones they flowed use the original 2.20 valve.

I don't have all the numbers, but the heads flowed 377 at .500, and 403 at .800 w/ 2.20 valves. I don't know what mine flow with the 2.25 valve, I'd guess slightly more. The exh ports were less impressive at 220 cfm without a test pipe. The bowls are pretty big on the exhaust, that hurts the flow numbers when not using a pipe, and they didn't have a test pipe handy to use for the test.

All in all I'm very pleased with the headwork, I think it's going to make pretty decent power.

Just another update. We got the oil pump, and pickup tube on. We set the pickup/pan clearance. My brother made a crank scraper for me, it turned out pretty nice.

getting closer, mocked up the valvetrain with got pushrods ordered, working on the intake now. About two more weeks should have it done.

Nice

I have to thank Lem Evans, a lot of the parts used were supplied by him, his service was spot on.

Thanks

any updates ?

Still working at it. It's close, it should be on the dyno in a couple weeks.

It's finished. If all goes well, I will have dyno numbers by the end of next week.

Sweet, Keep us posted.

Nice looking job on the intake. have any pictures of the plenum?

Here are a few

derek528 wrote:Here are a few

Looks good Derek,

Lot of hard work and welding, porting time. You might want to round your runner dividers more to keep the air on the walls the look sharp in the pictures.

I knocked them over with a sand roll, they probably are still too sharp, but I was running out of steam by that point and settled for good enough. I'll probably do more to the intake some time in the future if I get bored.

looks familiar......

richter69 wrote:looks familiar......

I kinda modeled it after the small block manifold made by edelbrock for the sc1 heads

derek528 wrote:

richter69 wrote:looks familiar......

I kinda modeled it after the small block manifold made by edelbrock for the sc1 heads

I have done two intakes like you have done, one was a victor the other a mafia the.

You can see mine in the proven build section, I will bump it up for you.

There is a video of it a couple of pages in.

IDT-572 wrote:

derek528 wrote:

richter69 wrote:looks familiar......

I kinda modeled it after the small block manifold made by edelbrock for the sc1 heads

I have done two intakes like you have done, one was a victor the other a mafia the.

You can see mine in the proven build section, I will bump it up for you.

There is a video of it a couple of pages in.

cool I'll check it out.

richter69 wrote:

Looks familiar lol. That started as a victor correct?

mine is the TFS Blake did, I'll be honest my little 563 dont really start liking it until it gets over 7500 lol. I'm gonna make it a 588 this winter and more than double the nitrous I'm putting to it now........ it wont want to peak as high then lol.

richter69 wrote:mine is the TFS Blake did, I'll be honest my little 563 dont really start liking it until it gets over 7500 lol. I'm gonna make it a 588 this winter and more than double the nitrous I'm putting to it now........ it wont want to peak as high then lol.

Shift it at 6k, it'll fly...