302 cubes for Suburbia

[1project2many]

I've picked up a 99 Suburban with a bad engine to replace our 95 Blazer. It would be easy to replace the crank, rod, and bearings and put it back on the road with the original 350 but I've had this purple 302 sitting in my barn since '04 waiting to be installed in something. The 302 was originally built for the S10 and had a ZZ4 cam but for Suburbia I need a lower rpm torque peak. After many, many late hours I believe I've accurately modeled enough components to put something together. Here's the configuration:

L31 four bolt main block, L99 crank and 5.97" rods, H631CP pistons at .030" = 306 ci
L31 heads, stock valves and ports, guides machined for over .525" lift and upgraded LT1 springs
9.0:1 compression
14097395 HT383 cam
1.6 rockers
.040" quench
Single roller timing chain
small harmonic balancer
shorty OBX headers
Mercruiser dual plane ceramic coated EFI manifold

Still working on...
Torque converter choices
Exhaust configuration

The simulation shows one of the roundest torque curves I've ever seen.

[JeepsAndGuns]

Ok, this has nothing to do with the post, and its just out of curiosity because I have seen it on another screen shot of yours.
Seamonkeys?

[1project2many]

Seamonkey. No "s". Internet browser. I used Netscape for years. Netscape code was eventually released to open source and formed the basis of Mozilla. Mozilla was distributed as a standalone browser for a while but was eventually dropped in favor of Firefox. Firefox changed the look and feel of Mozilla considerably so a group of developers decided to continue along a path closer to traditional Netscape / Mozilla with Seamonkey. I have both browsers on this machine and although they use much of the same code, Firefox feels foreign to me.

[EagleMark]

edit...

Just me but sounds like a lot of work and expense for a daily driver.. what about smog there? You should rebuild the engine in the Surburbia and send me that intake...

[1project2many]

Suburban's not going to be daily driver. It's the luxo-liner when we take the kids for long trips and it's the tow vehicle that's finally large enough to haul the stuff I put on the car trailer. I'd have to build a turbo four and still keep it below 55 to afford it as a daily.

The 302 is already built. I'm just changing the cam (and shortening the balancer, and adding the crank sensor, but no big deal there). Smog is easy here. Plug state computer into OBDII port. If computer sees enough readiness monitors and doesn't see codes, then all is good. I don't believe I'll have any problems with that. LS engines use a divorced EGR so I can follow that path here. I have to connect the purge line somewhere but that's not likely to be an issue, either.

Besides, using the 302 in Suburbia frees up a set of Vortec heads. I'll swap in a set of 2.02/1.60 stainless valves I have here from some faulty Bowtie heads, throw on a set of big springs, bolt them onto the old school roundy round car block with a big Lingenfelter retrofit roller cam that's hanging around and put the Chevelle back on the road with the other marine intake I've got and the six speed that's been collecting dust since '03.

Also, if you watch Ebay there are Vortec style Marine intakes that show up from time to time. Prices are a bit steep for me but they're still cheaper than some of the aftermarket L31 intakes.
http://www.ebay.com/itm/310473716029...84.m1438.l2649

[EagleMark]

So what engine was in the Subrban? Or more importantly what PCM? Didn't 99 come with Vortec and LS engines (still badged Vortec)?

That is a strange tourque curve, really opens up gear choice, what's in it and where will it be running RPM wise?

[JeepsAndGuns]

Seamonkey. No "s". Internet browser. I used Netscape for years. Netscape code was eventually released to open source and formed the basis of Mozilla. Mozilla was distributed as a standalone browser for a while but was eventually dropped in favor of Firefox. Firefox changed the look and feel of Mozilla considerably so a group of developers decided to continue along a path closer to traditional Netscape / Mozilla with Seamonkey. I have both browsers on this machine and although they use much of the same code, Firefox feels foreign to me.

Wow, interesting. Never heard of seamonkey web browser.
Back to your thread, sory about the hijack.