sbsrkh

iTrader: (28)

I've been collecting parts for awhile for a LS1 383 build to put in my '72 Chevelle. Here's what I've got so far:

Callies 383 kit
-Compstar 4" crank
-Compstar H-beam rods
-Mahle Flat top pistons w/6cc valve reliefs
TR Raptr cam 236/242 - .615/.615 111 lsa
PRC LS6 stage 2.5 heads milled .020
Fast 92/92
Flow matched red top injectors
March UD crank pulley/OD alt pulley
Hedman Long tube headers to 3" duals with x-pipe (no cats, old car)


Other upgraded stuff:
Cloyes Hex-adjust timing set
LS7 lifters
Comp trunion upgraded stock rockers
ARP main studs
ARP Head bolts
ARP balancer bolt
Melling high volume pump
LS6 valley cover

4L60E with a Tci Street Fighter converter 3200-3600 stall
12 bolt 3.42 posi

I want this to be a good all around weekend crusier. An occasional pass down the track and be able to drive home with the AC on .

What do you think about this combo? See any problems? Any HP guesses?

twitchtwice

iTrader: (12)

the main thing i dont like with the build is your stall. i would suggest calling circle-d and having one speced out of ordering one from yank.

that stall you have will kill the rest of your build.

sbsrkh

iTrader: (28)

Are you thinking I need a higher stall?

twitchtwice

iTrader: (12)

not necessarily higher stall. but higher quality stall

LS1rob00

iTrader: (9)

Looks like a pretty sweet setup

redz_02

iTrader: (4)

Which block are you using? I have been considering a 383 but am weary about my 98 block. Compared to an LS6 block, the rear cooling is lacking; but it would be nice to use this block b/c I know everything about it.

batboy

iTrader: (6)

Yeah, there are lots better converters available than TCI. Don't skimp on torque converters. I would do a 3600 rpm stall with the cam you listed.

Tony Mamo @ AFR

iTrader: (13)

For a (primarily) street driven deal (with the occasional track romp of course) I prefer slightly wider LSA cams.

I would have ground your cam on a 113 -114 LSA to improve the street manners and the fuel economy.....also cleans up any potential to surge at low RPM cruising.

The funny thing is the peak power wouldnt have changed....only giving up a little bit of torque in the lower/mid RPM's....IMO a worthwhile trade for the improvement in drivability.

Also, the better the heads you run (especially a pair with good velocity and strong low/mid lift flow), the less you need the overlap with the narrow LSA cam to get the air moving.

I share this not so much to encourage you to change....more so to give others some food for thought who might be considering a similar combo.

All the cams I spec are usually on a 113 - 114 LSA with the AFR headed combo's I get involved with and none of them are ever at a loss for torque anywhere and produce big power as well....keeping reasonably good drivability and better fuel economy with less overlap due to the wider LSA.

Carb applications seem to need a more narrow LSA than EFI engines btw.....another reason we have the luxury of spreading those lobes out with the Gen III platform. Think about how wide some of the OEM stuff is these days.....even 114 looks narrow in comparison.

OP....Im sure you will be pleased with your combo and overall it does look solid. My cam discussion here is more nit-picking than anything else and just makes for some good discussion.

-Tony

got milk??

iTrader: (18)

After having my TV2 on a 112LSA in my car for the past 2 years I wish I would have gone with a more custom cam on a 114 or 115 LSA. Simply because of everything Tony stated above!

sbsrkh

iTrader: (28)

Thanks for the replies. I'll do a little more research on converters.

The block is from a '99 f-body. I bought the motor as a complete pull-out and was going to install it stock. Until I found out it had been in a front end hit and the crank was slightly bent. So I decided if I'm going to build it I might as well go 383.

Tony & others as for the cam - How bad will the driveability be with a 111 cam? I'm all for a nice lope, but I don't want to deal with it killing at every stop light.

Thanks
Steve

redz_02

iTrader: (4)

You're looking at 17 degrees of overlap so it should have a good amount of lope.

Y2KblueZ-28

The RapTR cam drove flawless in my 2000 Camaro Z-28, even with the 2.73's i had and i had alot of fun chewing up cars with alot more $$$$$$$$$$ in them than i had. Oh and that was matched to a Super Street Fighter 3,500 rpm stall from TCI. Worked Awesome ! TCI has built converters for years, alot of people knock them but in my personal experience with running a converter from them I was highly satisfied.

JPH

iTrader: (2)

Have you bought all these products yet?

garygnu

I have run some tci converters in the past,but they some time use used cores from 4 cylinders trannys.