Full Throttles X3 cam?

[YellaGN]

How well would this cam go along with my setup? I was originally thinking the Roller 212/212, but always looking for alternative routes in order to gain the performance, but save the money!

Buick Turbo "Revolution X3" street cam
Latest tubo technology camshaft for use with newer high flow turbos. Specs:
Intake 218 @ .050 .460 lift
Exhaust 222 @ .050 .479 lift
112 L/S (installs at 110)
(lift with stock rockers)
Race cam but still happy on the street. Needs 3200+converter and big turbo (LOVES the Q and P-trim ) Top end that will put your head back in the seat.
__________________
87 GN T-70 BB w/ p-trim, stock heads and cam, Precision FMIC, 70mm Throttle body and ported plenum, 55#ers, double 340 walbros, 3200 Art Carr w/ tbrake, Full ATR 3" exhaust, wideband. (11.47 @ 117 @ 24 psi) with old combo.

 

[Lee Thompson]

Looks good

I assume that lift is with 1.55 rockers.
I have a cam that is very close to that---218-224 with .500 intake and .520 exhaust. With what you have, I believe that will be the perfect cam. I have been pushing my 218-224 for a few years now but not catching on very well. I have installed this 218-224 in 4 local car ( including mine ), pulls very strong to 6000. None of us go past 6000 as we all are using stock ecm.

 

[Fuelie600]

YellaGN, I would look at upping a few things before moving on to a diferent cam. Your injectors are too small for that turbo--a minimum of 72's would be in order. 2nd, if your heads are stock, you need to have them ported to open up flow, or a larger cam will hurt you more than help you. As for the cam----this is my opinion, so no flames intended---- I would prefer a single pattern, or a reverse dual pattern. On a turbo motor which has alot of backpressure in the exhaust, I prefer to keep the exh. valve duration as short as possible. Good luck, Brian

 

[STP]

I've often wondered since the backpressure is high on a turbo engine why wouldn't you want more exh duration than intake dur? I'm by far a cam expert, haven't done much research on them...I can degree one but that's about it. BTW what is a reverse dual pattern cam? Call me ignorant, but cam selection/grinding is sort of a black art to me...Scott

 

[Lee Thompson]

stock cam

Check the specs on a stock TR cam. I know it is small compared to what most of us are using today, but you will see that it has larger # on the ex. side. I do believe the engineers knew a little something.

 

[Dusty Bradford]

I ordered my SBC cam through pro-line/ Steve Petty engines. They know a thing or 2 about making big power with turbo engines and my exhaust has about 5 more degrees on exhaust than on intake. It's like a 248/253 from what I remember.

When I spoke with cam-motion directly they recommended a 252/247. I assume Petty found something on the dyno that he liked with the larger exhaust duration.

 

[STP]

Hrm..interesting. Dusty what did you find out about Chris's car?

 

[Dusty Bradford]

You mean the one we broke in BG? That's actually Tommy Wyatt's ride, the older guy that was with us. Chris was driving it, are you confused yet

He called yesterday and it's still in the trailer where I parked it last week. Chris had been doing most of the wrenching on it and he was pretty burnt out after we swapped cams to fix the valvetrain problem, then get there and only make 2 passes. Tommy does want it ready for TSM next year but for now Chris and myself have enough stuff of our own to work on. I've got to get this baby room finished so I can get back on my heap!!

 

[STP]

I see..Baby room? You too? Seems I remember you telling me that when I ran into you at the Outlaw race in Huntsville. Congrats..we shoulda partnered up and done both rooms at the same time. Then we could jump back on our hot rods : )

Okay back on topic now....

 

[Dwayne]

maybe you fellers need to get together and find out what causes people to have to build a baby room....

 

[STP]

Well if I actually attended (yes I graduated) High School, I would have learned that in Sex Ed class...Had some dike teachin' it though, so I bailed.

Back on topic DWAYNE..

 

[Dusty Bradford]

I think I found out this last time. When I take the dog in to get fixed I'm gonna let the vet fix me too

If I have to add on anything else to the house it will be a nice garage.

Anyway, I am starting to see a lot of grinds coming out with larger exhaust dur. #'s. It might have something to do with how much a particular heads exhaust flows.

 

[John Wilde]

Originally posted by YellaGN
How well would this cam go along with my setup? I was originally thinking the Roller 212/212, but always looking for alternative routes in order to gain the performance, but save the money!

Buick Turbo "Revolution X3" street cam
Latest tubo technology camshaft for use with newer high flow turbos. Specs:
Intake 218 @ .050 .460 lift
Exhaust 222 @ .050 .479 lift
112 L/S (installs at 110)
(lift with stock rockers)
Race cam but still happy on the street. Needs 3200+converter and big turbo (LOVES the Q and P-trim ) Top end that will put your head back in the seat.
__________________
87 GN T-70 BB w/ p-trim, stock heads and cam, Precision FMIC, 70mm Throttle body and ported plenum, 55#ers, double 340 walbros, 3200 Art Carr w/ tbrake, Full ATR 3" exhaust, wideband. (11.47 @ 117 @ 24 psi) with old combo.

This sounds a lot like a Dan Strezo Cam.

 

[VadersV6]

Whats the stock duration @ .050?
For every 10 degrees extra duration, you'll shift the powerband 300-500rpm higher. That seems like enough duration to really hurt a street car's band under 4k. Sure, top end will be insane, but how long will it take to get there?

 

[Mike Licht]

Lets recap a bit. In the old days turbo thinking was a short exhaust side due to the high backpressure and opening the exhaust vale at the right time. As turbos and tech got bettter it was found that single patterns work better. Especially with tighter L/S that was thought Well turbos keep getting better and backpressure keeps going down. Now the currnet thinking is longer exhaust. Look at the guys that iuse the 204/214 that is too much IMO but they work well too.
Mike
BTW it is not a "Strenzo" but there is NOTHING wrong with Dan's opinon either

 

[John Wilde]

Originally posted by Mike Licht
Lets recap a bit. In the old days turbo thinking was a short exhaust side due to the high backpressure and opening the exhaust vale at the right time. As turbos and tech got bettter it was found that single patterns work better. Especially with tighter L/S that was thought Well turbos keep getting better and backpressure keeps going down. Now the currnet thinking is longer exhaust. Look at the guys that iuse the 204/214 that is too much IMO but they work well too.
Mike
BTW it is not a "Strenzo" but there is NOTHING wrong with Dan's opinon either

Sorry Mike this looks almost identicle to the 218R that Dan has been using for several years. Sorry for the mistake.

What is "Strenzo"?
Dan's name is Strezo.

 

[Mike Licht]

No that was a fat finger and I can't edit on this board deal. No offense taken. Dan is a guy I call when I need help too.
Mike

 

[VadersV6]

A few months back I was preaching the virtues of added exhaust duration on forced induction motors. I got slammed and shut down quick cause of the "equal duration worked good for such and such's car, so you dont know what you're talking about" ideology. Good to see this knowledge has made it into the TR world. Same goes for heads.