Hey guys.

Gonna order AFR 195 street eliminators for lt1.

http://www.gmhightechperformance.com...n/viewall.html

Motor is going to be 355" with 2 valve relif flat tops, close to zero deck (will measure when i assemble to know exactly), gonna run .040 gasket and 55cc chambers.

Prolly have to buy/run edelbrock lt4 intake.

What cam should i run?
I have a new in box cc503, but, cams are cheap and now's the time. I could go with it, or, something that will work to maximize the heads/compression, be nice to shift at 6500-6600rpm.

I have a 9" with 4.10 gears and good hooker LTs with OFY and 3" hookers CB.

T56 car with McLeod street twin and steel flywheel

Car will be street/strip, but i can handle a little rumpy

I would consider a solid roller, but i do want some ease of streetability and lots of traffic idle time if need be.

I would like to stay away from custom cams.

And last, i have tunercat, but who would be GOOD to sell me a solid/base tune if I provide final compression ratio, altitude where I live and head flow numbers.

Thanks a lot guys

 

Is the heads ported if not I would have them ported if you have the cash and have http://advancedinduction.com/ spec you out a cam; either way I would pick up a cam from them. That is if you want the most out of the car, if you don't want to spend more cash the cc503 and 195 AFR'S will make good power.

 

As a rule Golen's engines lose a solid 25% from engine dyno to rwhp, meaning the engine combination that lead you to this decision might make 385rwhp.

You can have another 40rwhp for about the same money or a little less even.

If you stand by your decision just throw the 503 in there.

 

40 more hp, how so?

Using AI heads?

I notice there isn't a comparison with those heads in GMHTP article.

All I have so far is the short block and 503 cam. I do not have the heads yet.

 

AI Heads + AI cam + bolt-ons + good tune = 410+whp. A bit pricey but the best ported stock castings you can buy.

Or if they are outside your budget you could go the LE route also.

 

I can't wait until I have a bunch of money that I can throw at my car.

 

Well, money IS an object, but the AI stuff isn't out of my price range.

I want to do it right and I would consider the TFS ported heads too from AI.
I just don't know if a 355" would support those flow numbers and that's one part I can't change.

As for street SR, I had a 383 in a third gen with 242/248 @ 0.050 SR and it was fine on the street, I am just not sure how well the SR combos would take to extended traffic idle time that i can see these days, or 1500mile trips on highway?

400rwhp in Calgary, Alberta (3500-5000' altitude according to barrometer conditions) would be plenty and not sure if possible w/o SR.

Also what are the limits of opti, I always thought it was 6500-6800. Car has MSD opti on it and MSD ignition box.

Thanks.

 

Their ported stock castings are extremely capable. I'm running the same heads on my car and so is Dwayne (posted above).

I'm also spinning close to 7k with a stock Delco opti.

 

Sounds like a CC503 would give you a nice streetable combination, though I think you may be leaving 30 - 40 HP on the table, especially with the superior flow characteristics of the eliminator heads.

I run a custom grind, a comp cams 230/236 on a 112 LSA, in minirammed 385 SBC configuration and it's been great, with a solid 400 RWHP, plus good 6200 RPM performance. That particular cam which I had ground in 1999, is now available from Comp cams as an XFI-series cam with just minor changes under the part number 249-07-467-8 . That XFI cam is ground with a 113 LSA, and you will probably find it matches your eliminator heads and fuel injection quite well.

 

Thats kind of what i was thinking.

That xfi or the one size bigger, but may be too bit (242/248 duration).

I run an xfi 268 flat tappet in my 406 with miniram and its a tad too small, off the shelf trickflow 195s on that motor with 10.3:1 cr. 100 percent streetable tho.

 

Looks like you are running pretty impressive numbers.

 

I love my xfi 280. 113 lsa so the idle isn't too bad. Cam makes mad power from 4k too 6500+

 

Afr 195 heads is one of the best performing heads out of box,
I have Gm 847 cam and i think cams in that size make these heads shine.

If you take afr 195 route you should not use the Edelbrock Lt4 intake,
its for 210cc and 227cc afr heads i did that mistake.

Its nothing wrong with Advanced Indudtion heads and cams but its kind of
boring,you can find other combinations that performs very good.

I think you have the knowledge to make the right choice.

 

I think you need to look for documented results, not magazine articles. There is often a big difference between what people believe is wonderful and what works here on earth.

 

Thanks. I'm not the only one though. Take a look around.