John Scott

I really like the Pro magnum rollers from CC. Steel and lightweight. Got 12 of 'em on my 4.3. Probably 5,000 miles by now. I'm not saying easy miles either. Think it would be a bad idea to get four more for my V8? Man, they've really gotten expensive!...or is this a no-no to re-use? The other brands are cheap. JS

dankinzle, do you have any pics for your 3.5 exhaust? JS

So, after digging around, I can't find what I'm looking for. Has anyone run the S&S full length (motorsport) headers with a T5? ( my T56 uses the T5 bell) MojoZ is the only one I've heard from and says its too close to the Slave. Any other options? I hate to cut up a new set if there is a bolt on. JS

Grumpy, thanks again for your time. The lower duration does just that, brings the peak power down. I want a low rpm engine that gets going around 2 and gets its job done by 6! Looks like this is the ticket! In the summer we can lose 20% or more of what you sea level dudes run. 'course we only need to inhale every third day when we come down for a visit Conquest heads did evolve into the Pro1s. I don't know if there is any difference in their design other than the new name. My engine builder has been trying real hard to convince me that, with experienced porting, they clean up and flow great #s. I hated the out of box Dart #s compared to the AFRs. FastFrog, my builder has a good rep. of building drag motors that work at Bandimiers altitude. Pro Mods on down. He recommended early on that our altitude benefits from more lift than typical cam designs. He also has found that up here, shorter duration works well with the 377 383 combination, according to his dyno tests. Computer numbers are just a helpful starting point for reference. Bottom line is the time slip. I'm getting real close to locking into these specifications. I may order the cam and get the heads going today! JS

Mister GV, At your convenience, I'm making a couple of revisions to my build, could you run these numbers for me please? 383 sbc 6inch rod, Cam: Solid roller, 600 lift/ 244/248 duration/ 110 LSA. 11.0:1, victor Jr, 1 3/4 full length header. 750 cfm carb. Dart Pro1 215s fully ported. The cam lift is by recommendation of what works at our altitude. My builder's forte is head flow. The top racers swear by his work. Loves the Dart heads. Thanks! JS

If I'm not mistaken, the pistons for the 6" are a litle lighter, too. JS

Ditto on whats been said. Grumpy, you've helped to put some bench racer notions and hype to rest. Your're a straight shooter! I'm making some changes with my build due to your information. Thanks for the advice. You really ought to share with the others how you got the name Grumpyvette. JS

Max, Some are perfectly happy with the stock L6 motor, too. What ever blows your dress up If your satisfied, your way ahead of most of us. JS

Earlier '55- 85 cranks have the 3.58 crank flange bolt pattern. 86 and up have the 3", so removing the weight won't work. Make sure you get the small diam flywheel (153 tooth). 10.4 diam 26 spline clutch. Chevy has a hd pilot bushing with needle bearings, #14061685. JS

Welcome to HybridZ! You came to the right place. Plenty of information, advice, and opinions. You might try posting your engine on the buy sell forum. Have fun! JS

I've been through those times! Family moved away when I was 17. Chose to stay and make a go of it. Had winters without much more than soda crackers. It can be hard, but the hopes and dreams are free. Keep planning and researching for your Z. Even if its not as soon as you'd want, it will happen. Keep your eyes open for other employment. JS

Were the headers you ordered from Motorsport full length or shorty. Trying to see what works and what doesn't as well. JS

Ditto what Randy syas! The new Chevys and GMCs HD are sweet! Quiet and fantastic milage. Sit next to you at a light you'd never know its a diesel. I know guys that use them as the family wagon. Pullin' SOBs. Bring a fat wallet. JS

Rick, I'm checking on a "tight lash" solid roller from Isky. Supposed to be fairly quiet. Check them out. Techs seem willing. I'll know more in a week or two when I order. I'll relay info. JS

Shortys or full length? JS

I have many co workers with the Triton and Dodge V10s. The Dodge is the better puller. Everyone with the Ford complains about the milage. Exhaust note is cooler on the Ford . JS

The more information the better. You bring up good points about head selection. The reason I liked the 195AFRs was their fantastic flow #s at the lower lift values, not just the final # at maximum lift. I found out my builder was comparing the last years Pro1 227 vs the new CNC 227s. The new ones were flowing impressive #s out of the box. I'm getting the #s for the 215s this week from a Dart tech, and will print them when I get them. Update 12/3/01. I guess it was just bench racer hype and rumors. Yes they have new cnc heads, but not in the 215s. 227 230s apparently have the room for the machining. JS JS

As long as I'm at it, there being only a few Buick GN V6s, even fewer running the 4.3, the forum has a low number of posts. I get maybe 3 emails a month with 4.3 questions. Maybe it could be changed to Alternate, non Datsun Z 6 cylinder. There are quite a few other viable 6 cylinder powerplants, Toyota, Skyline,BMW, Hmmm..Porsche Boxers. The other 6 cylinder forum seems more of a natural for the modified Z engine. JS

Thanks for the info. The #s I got form dart on the Pro 1 215s weren't very impressive in my book. The AFR 195s flow better. What I was referring to was the NEW CNC PORTED Pro1s. My engine builder, flow bench equipped, good reputation, has a set of new, nicely ported Pro1s from last year, and brand new out of box cnc pro1s. Same size cfm, 230s I beleive. On his flow bench the CNC are way, way up in the flow #s. So good in fact the owner of the last year heads is selling them in order to buy the new model. When I called Dart a few months back, they weren't yet producing the fully CNC ported models. Talked to a racer on Prestage.com and he said he spent a fortune getting his 215s to flow 300+cfm. If the new ones flow decent #s out of box, then the head wars are on!I have someone working on finding the new flow #s. JS

Has anyone else noticed the tests coming out with the new CNC Pro1s? I wasn't impressed with the flow #s of th first generation of pro1s, but the new cncs may be a hot item. Great flow #s with the new 215s, while maintaining high port velocity for low end. My engine builder just tested some of the new models and claim they literally blow away the old ones. Just when I was happy with my 195 AFR decision. JS

OK I'm reading a lot about oil pans lately, but what pans will work in the Z chassis? How deep of a sump and how wide of a pan can be used with out custom starters, scraping the ground, and header mods? Obviously not every pan is going to fit. Part #s from those with sbc Zs, already tried and true, would be appreciated. JS

I think that is the same grind CC recommended for my 383 with 10.5:1. 2500-6500. I'll be upping the lift for mine closer to .600, but I like the duration and 110 LSA #s. JS

Ya know this takes all the fun out of sitting behind the parts counter with your bent piece of welding rod, coat hanger etc trying to find a suitable match. JS

...and the pans, if its #15-240 cost an arm, leg and foot. (325.00) JS

Lone, you got me rollin' on the floor with that one. Ahhh.. if I can wipe the tears from my eyes, I have less than three inches to my exhaust. A fraction more to my oil pan sump. As one friend put it. "John you won't clear a road apple in that thing" I havent hit anything yet in 5 years, but I do survey train crossings, speed bumps and avoid construction zones. I hope the V8 will have a little more. I get tired of scanning the horizon for debris at fast highway speeds. One truck retread or concrete chunk can ruin your whole day. JS