lq9 cam/tc advice

[rotun]

I have a '74 K10 sb with an lq9 being built. Few ?'s seeking your expertise/opinions...

Built th400
203/205 doubler
4.10's
37's
Pacesetter 1 3/4 Longtube headers

The guy building the lq9 is putting in a 230/230 115 cam and 8.1 injectors.

Thoughts on cam choice?
What should I be looking at for a TC?
Any suggestions other than Yank / Precision?

[Duct_tape123]

What are the plans for the vehicle? I'll guess because of the tcase you're going with its for crawling/offroading. A cam that size will shine more in the upper rpm range. I'd look for something that puts the power around 2500-3000 rpm

[kerrige]

That cam would need a 3600 stall. I would suggest more like a 222/226 with a 3000 stall from circle d specialties.

[jmgak47]

Stick with a tight converter if you are rock crawling, no larger then a 2400. You need a very tight responsive throttle and a looser converter is not what you need.

Your amongst drag racers lol of course they are going to recommend larger cams and stalls.

Also your cam is way to big!!! You should look into something like a 215/215 using the LSL lobes from Comp on a 114+4, keeping the overlap to a minimum will help you a lot also for crawling.

TQ, tight driveline, and good throttle response are king in your build. My choice in a converter would be 1800-2200 range.

[bstill]

I've got the same setup as you except a 5.3, 350, 4.56 and 38.5s. I've got a 226/226 cam and even in double low in first gear, I can tell it needs a stall and I'm shifting to second at 6000 rpm within 75' of taking off. I use mine for mud bogs though, so a stall won't hurt me and is really needed.

[rotun]

Thanks for the advice!
It will mainly be used for snow wheeling, breaking trail in the winter and occasional trails the rest of the year.......will need a combination of wheel speed and crawl hence the doubler. Not intending to do any rock crawling but at least I will be able to if the situation arises. I was leaning toward 2500-2800 stall so I guess I'm not too far off. Motor is being built and working on getting everything together before it is finished and delivered.

Thanks again!

[jmgak47]

Thanks for the advice!
It will mainly be used for snow wheeling, breaking trail in the winter and occasional trails the rest of the year.......will need a combination of wheel speed and crawl hence the doubler. Not intending to do any rock crawling but at least I will be able to if the situation arises. I was leaning toward 2500-2800 stall so I guess I'm not too far off. Motor is being built and working on getting everything together before it is finished and delivered.

Thanks again!

Assumed it was a crawling rig.

I would go with a 2600 stall and a 219/223 114+2, personally. A 2800 wouldn't be bad either but I still would lean to the 2600. Now your current cam is just wayyyyy to big, you need TQ and lots of it down low in the RPM band.