[mysticmissle]

505, 320ish eheads 10:1 single large 88-92 ish/110mm or maybe an 88/103 1.32AR
looking to have 12-400hp on e85

[73 TRANSAM]

I would call Bullet, but my LSM 55mm cam is a 262/[email protected] with 119 LSA .480/.470 LL. Steve from LSM likes this wide lobe for less overlap for turbo application. I haven't ran this yet but this year I would. My old cam that made 1265 HP@ 5900 rpm on a 482 with 15 psi was a LSM 254/[email protected] 116LSA .450 LL.

[mysticmissle]

my tuner is suggesting we can get to the chassis cert with a hyrdraulic roller at less than 6500. i would rather have more potential then i need, my aluminum motor has 55mm journals, ive considered that path but then i would also need new non offset 903 lifters. but i have not completely discounted that idea yet.

what heads are you running?

[73 TRANSAM]

Butler WP heads

[turbo69bird]

Remember a turbo will add 1000 rpm to any intake and can set up
So whatever it was good for before its good to 1000 more I raced my turbo car w a dual plane performer. Everyone said it wouldn’t work went 10.00 first pass off the trailer
It now had a cut down victor to fit job see the hood w efi but I liked the performer better .

I can get you my cam motion specs next time I’m
At the shop but to get you going 114 LSA. Approx 560 lift I always ran solid flat tappets no need for roller $$ unless you

My engine has been together so long I honestly can’t remember the specs on that last cam but I have a can card from a better one I had done , it was close but better I pulled it out when I had some popping and banging issues .( Blew the hood off the car at pinks day at LVD ) But it wasn’t the cam I chased my tail for a full year ended up being RF signal from the MSD even though I’d asked them about that as. Possibility over and over.

What are you trying to do with it?

[charlie66]

Heres one of mine

[charlie66]

Heres another one with more duration.

[charlie66]

another one

[mysticmissle]

did your engine prefer the split patterns or the even pattern? your head flows in the 330 range?

[ErikW]

Here's Bandit's cam card. 461 cuin, Edelbrock round port heads, 330cfm. Twin 78/75 turbos. 3500lbs best ET to date. 8.03 @ 171mph. 7500rpm limit. 25lbs of boost.3.25:1 rear gears. 28" tall tire.

[mysticmissle]

thank you Erik i am super impressed with your ride. Missed getting a chance to talk to you at sickweek . looked like the two cars your camp brought were doing well.

if you went single turbo what do you think the equivalent would be? i want enough power to get to low 8s but realistically i will not update the chassis to 750 cert. I just want to be ablt to run 850s at will and drive the ass off it when not at the track

[70 bird]

Summit 2802 here with 1.65 rockers....224 int./234 exh. .466/.488 lift. Everyone told me the cam was all wrong and wouldn't work right. Its been in there over 15 years.

[ErikW]

Originally Posted by mysticmissle

thank you Erik i am super impressed with your ride. Missed getting a chance to talk to you at sickweek . looked like the two cars your camp brought were doing well.

if you went single turbo what do you think the equivalent would be? i want enough power to get to low 8s but realistically i will not update the chassis to 750 cert. I just want to be ablt to run 850s at will and drive the ass off it when not at the track

Probably a single 88mm or a little larger. Depends on your weight and drivetrain. You probably want more rpm. If you have good parts 7500 is not an issue and the turbo will like the rpm. We found that out during sick week. We went from a 3.25 to a 3.00 rear gear and it actually killed some mph, so not making the power up top without the additional rpm. Going back to 3.25's

[ErikW]

Originally Posted by 70 bird

Summit 2802 here with 1.65 rockers....224 int./234 exh. .466/.488 lift. Everyone told me the cam was all wrong and wouldn't work right. Its been in there over 15 years.

There really is no wrong cam for a turbo setup. There are "optimized" cams yes but wrong cams, no. The turbo doesn't care.

[ErikW]

Originally Posted by mysticmissle

my tuner is suggesting we can get to the chassis cert with a hyrdraulic roller at less than 6500. i would rather have more potential then i need, my aluminum motor has 55mm journals, ive considered that path but then i would also need new non offset 903 lifters. but i have not completely discounted that idea yet.

what heads are you running?

If you go hyd roller. Put a good set of BAM bushed solid roller lifters in it and don't look back. Lash them at .005 cold and roll on. Use Stainless rockers , preferably shaft, and go with the fattest and thickest pushrod you can fit in it.

[R 70 Judge]

Originally Posted by ErikW

Here's Bandit's cam card. 461 cuin, Edelbrock round port heads, 330cfm. Twin 78/75 turbos. 3500lbs best ET to date. 8.03 @ 171mph. 7500rpm limit. 25lbs of boost.3.25:1 rear gears. 28" tall tire.

I'm curious of your idle characteristics with that cam. I assume it is pretty tame and street friendly? Idle rpm?

I've had your cam card saved for a while. I'm thinking it would work great for what I'd like to do with my car. My rough plan is a single 88mm-91mm and keeping rpm around 7K'ish. Something to drag and drive. If I could crack into the high 5's in the 1/8th I'd be more than satisfied.

Big rowdy N/A cams aren't as fun as they used to be when I was younger

[turbo69bird]

Originally Posted by 70 bird

Summit 2802 here with 1.65 rockers....224 int./234 exh. .466/.488 lift. Everyone told me the cam was all wrong and wouldn't work right. Its been in there over 15 years.

Hard to belive it’s been so long ! That
was such a long time ago.
Was a good community great group of guys pioneering this stuff together

[turbo69bird]

Originally Posted by ErikW

There really is no wrong cam for a turbo setup. There are "optimized" cams yes but wrong cams, no. The turbo doesn't care.

That’s not entirely true certain cam specs you’ll blow the charge air right through the cylinder and it’ll run like dog **** it’ll still run but not very well. What is true is that the turbo is very forgiving of set ups that aren’t optimized that I’d agree with you on. One of the biggest misconceptions in turbocharging is that bigger is better in exhaust.
It’s also a big misconception that you need a roller cam I know guys running 7s on solid flat tapper cams. And 2.5 inch pipes from the header to the turbo .

[mysticmissle]

Originally Posted by turbo69bird

That’s not entirely true certain cam specs you’ll blow the charge air right through the cylinder and it’ll run like dog **** it’ll still run but not very well. What is true is that the turbo is very forgiving of set ups that aren’t optimized that I’d agree with you on. One of the biggest misconceptions in turbocharging is that bigger is better in exhaust.
It’s also a big misconception that you need a roller cam I know guys running 7s on solid flat tapper cams. And 2.5 inch pipes from the header to the turbo .

pontiac powered? at what weight

[R 70 Judge]

Originally Posted by 73 TRANSAM

I would call Bullet, but my LSM 55mm cam is a 262/[email protected] with 119 LSA .480/.470 LL. Steve from LSM likes this wide lobe for less overlap for turbo application. I haven't ran this yet but this year I would. My old cam that made 1265 HP@ 5900 rpm on a 482 with 15 psi was a LSM 254/[email protected] 116LSA .450 LL.

5900 rpm seems low. Was the turbo under sized? I bet it was a blast to drive though