Currently the car is running a 232/236 around .580ish lift(1.6RR) 111LSA.

Also if switching from this cam to the comp one will I loose alot of N/A power? I may be running the cam before the turbo goes in. Dont have the funds to do it all at once.

motor specs....411RWHP/396RWTQ thru a 12 bolt 4l60e
383 LT1(o-ringed)
forged eagle 3.75 crank
forged eagle h-beams
forged je-28cc pistons
LE2 heads
pac 1518 springs
1.6RRs
double rollar timing chain
Ported LT1 intake
58mm TB
etc


Now I was thinking of going with the Comp Cams
Comp Cams "Extreme" LT1 Camshaft, 224 / 236, .502 / .520 114 LSA, Very aggressive camshaft for street/strip blower applications. Heads, Exhaust, Stall or M6, Computer tuning required


Thanks Jay

 

Anyone have input on the comp cams 224/236 in my 383 front mount?

I just picked up my turbo it is a Garrett/AiResearch TH08A64 (74mm .96A/R..exh with a T6 flange)

Will this cam work good for me?

Jay

 

Typically, a turbo specific cam will have a couple more degrees duration on the intake than the exhaust, be smaller than you would expect @ .050", and be on a 112-115 LSA. The goal being high exhaust velosity to spin the turbo.

Very generally speaking, with 383 cid, somewhere around 218/216/114 would be a reasonable starting point. Obviously, you need to take into account your intended rpm range, cylinder heads, and a host of other variables.

Talk to a company besides Comp, where the person might actually pay attention to your needs. Cam Motion, LSM, and Bullet a a few that have produced very good results.

 

Thats what I thought, so this is more like a blower cam?.

I shift my auto at 6100RPM (usually goes ups to 7000rpm)
LE2 heads are on it and will be untill I have funds for some TFs.

ON a 383 wouldnt I want something a tad bigger because of it wanting air?

Also I wanted to stay around the like .580s lift on a 1.6rr so I dont need to do springs right away.

Jay

 

Yes

The turbo will move the air.

As I said, those specs are a very general starting point, but I would be surprised if, after talking to the mentioned companies, the specs would be much bigger. A proper turbo cam will be smaller than you think it should be.

Unless you use some very aggressive lobes, most short duration lobes will only have .530"ish lift w/ 1.6 rockers

I'd also suggest you search for info about Jim @ Speed Inc's old LT1. His combination was very successful. Although it was a 355, I believe the cam was in the 212-215 duration @ .050" range.

 

Engine- 359ci LT1, splayed 4bolt, eagle crank and rods, CP pistons, 8.6-1cr, AFR heads, 218/218 hyd roller.

Those are his specs....I just figured bc its a 383 I needed some more. Makes sense tho. I love his car I remember reading up on that thing.

Jay

 

The cam you're looking at is similar to my cam, BUT...

if I'm not mistaken, you're going to use a T6 frame turbo. As long as you install a decent exhaust (3.5" at least with a straight-through muffler), your exhaust pressure should be low. If the backpressure is close to boost, then there is really no reason to go with a so-called "turbo cam". Cam it just like you would NA.

Mike