Jancorvette

I have a low milage 97 trans am with LT pacesetters, y pipe, hooker exhaust, k&n filter and 4.10 Afr 195 heads seem like the next step. Do they truly bolt on a Lt1 with factory manifold? No need to buy a lt4 manifold? Which cam do you recommend for a street car with these heads and mn6? What are the average gains on these heads?

joelster

Bolt right on. The LT4 style are 210+ up

Jancorvette

Thanks. Can i expect 50whp with a small cam? Need tunning?

96capricemgr

iTrader: (1)

The LT4 intake is internally the same as the LT1 anyway.

Since you are asking if it needs to be tuned STOP looking at expensive mods right now. If you are asking questions that basic you are not ready for this.

Jancorvette

I have owned supras, rx7s, corvettes and supercharged mustangs. I have tuned most of my cars but never put heads and cams on a car and am not certain if they required tunning. By the way, what are your mods?

Fly on the wall

The 195cc AFR's are LT4 castings. You will need an LT4 style manifold or add material to the LT1 to match the raised runners of the 195's.

KW Baraka

iTrader: (7)

Correct. AFR 195's are LT4 spec'ed heads. A call to AFR will confirm this.

http://www.airflowresearch.com/index.php?cPath=27_28

KW

joelster

You guys are correct, disregard my post #2

robsquikz28

iTrader: (246)

If using stock intake you will need AFR 180s to fit.

I would much rather go with LE3 heads over The AFRs if your staying with a stock lt1 intake.
Or Advanced induction 200cc heads since you plan on spending about 2k already.
These heads will surpass the AFR 195s all day long.

I know I have used both !

Jancorvette

The problem is that i live outside the US so, sending my heads to Elliot or AI is a bit of a hassle. It is cheaper for me to buy some LT1 heads in the US and send them directly to Elliot or AI for porting. This option is probably cheaper since i don't have to upgrade my lt1 intake.

Since you have use both, which cam did you use and how much HP? What are you using for tuning since i believe HP tuners don't work for LT1s?

robsquikz28

iTrader: (246)

I had Le3 and AI200 both make over 420hp with a Automatic. With m6 you will make more power.
With nitrous the 200s made more power. From the CNC I believe. Not much more but mph went up on the track noticeably.

KW Baraka

iTrader: (7)

OK.....Lloyd Elliot will be easier to work with here.

AI will only work with Trick Flow heads. And you can get them ported directly from AI.

But Lloyd Elliot will port WHATEVER heads you have sent to him.....so you have a choice with him.

If I were you however, I would strongly consider a set of Dart 180cc Pro-1's.

These heads make great power with the 350ci AND with stroked (383ci) engines. I think both Jegs and Summit Racing carries them..... If you go that route, get them with the Comp 987 valve springs!

http://www.dartheads.com/products/ai...aitfile_id/94/

KW

KW Baraka

iTrader: (7)

http://www.summitracing.com/parts/dr...make/chevrolet

http://www.jegs.com/i/Dart/301/11111...oductId=932783

KW

Jancorvette

I am looking into some LE1 heads and 218/224 cams. They are a bit on the small side but have street manners. The ported Lt1 heads seems to be a better than for buck than these aftermaket heads. 360-380whp for 1,200 aint bad. The problem is that every thing adds up. Add injectors 30 lbs ($400), tunning($400), gaskets, head bolts, etc..... and you get to $3,000 without breaking a sweat.

SS RRR

iTrader: (2)

You don't need anything more than stock injectors for 360 to 380rwhp.

Tom94TA

If you're looking at that cam (218/224) let me throw out there the hotcam either by itself or the kit and forget the heads. You'll get around 320 rwhp and a good SOTP increase. The cam itself goes for $205 at Jegs. I've taken trips to the track between all steps in my mods. Adding just the hotcam and mail tune after I had previously upgraded the valve springs picked up my mph from 101.2 to 107.93 best. Now thats bang for the buck.

The cam change makes the car alot of fun, sure some heads would be nice but I don't want to be 'that guy' with 15-20k in my 4th gen. I'm already approaching 10k though. Ugh, lol

Track timeline.
https://ls1tech.com/forums/16179878-post476.html

Jancorvette

I don't want to be that guy either, spending 10k on a 8k car LOL. The mph increase for just cams seems great, almost too good to be true. Thats alot. You picked up over 60whp on that, probably the tune helped enhanced other already installed mods.

I know the hotcam is one of the LT1s favorite cams. It is a option also, but 320whp still is not going to make me THAT happy, yeck my old MustangGT with Saleen supecharger was pushing 470whp. Then i sold it and got married, but that is a whole another story

SS RRR

iTrader: (2)

Bone stock my SS put out 282rwhp and 310rwtq. LPE LT4 heads/intake, 211/219 cam, long tubes, ORY, stock injectors, 58mm TB and dyno tune the car ended up with 370rwhp and 355rwtq. Car put down a best of 12.09 @ 115.5mph at 3750 race weight.
It's easy to get good power from quality parts. LT4 hotcam with good ported heads can get similar results. Probably not as much torque down low as the 211 cam but as much power and similar track times.

Jancorvette

Any other combo using Lylod Elliot Staged 1 ported heads?

myltwon

iTrader: (1)

The best cam to run with AI or LE heads are the cam that either company recommends with them. They will spec a cam they know to work best with the heads they are selling to meet your goals and needs. Anything else will be a compromise one way or another and leave power, and or driveability, on the table with very little difference in cost in the long run.