LT1 in my 68 Camaro

[68LT1]

New to site.
38106
5 year build with 94 LT1 and T-56. Planning on 383 build this winter

[popo8]

Nice!!!!! Welcome to the Family!!!

Sent from my SM-G955U using Tapatalk

[Injuneer]

Beautiful car! Very well done.

[Fastbird]

Oof.......that's gorgeous.

[68LT1]

Thanks for the replies. As I stated, will be doing a 383 this winter. Trying to decide which heads to get. Planning about 500 HP at the crank

[BLK95-Z]

Beautiful car man. I love that Silver

[Camaro96]

Thanks for the replies. As I stated, will be doing a 383 this winter. Trying to decide which heads to get. Planning about 500 HP at the crankI would recommend a couple of things AFR cylinder heads, contact Lloyd Elliot of Elliot port works.

Sent from my Moto Z (2) using Tapatalk

[383z]

Nice car!

We need engine pics and interior pics too! Lol

Dont go with AFR heads.
Go with Lloyd Elliot.
It's the most efficient way to go with the least amount of headaches. Not bad priced either campared to his competitor and trying to peice everthing together yourself.

He will give you heads, a cam, and port your intake and you're done!
AFR heads you have to find a cam and which springs. Then you have to find a LT4 intake and pay too much for it and pay more to port it. Been there and done that... or you have to buy a high priced Edelbrock intake.

Call Lloyd and get his TF ported heads, with cam, and have him port your intake and you will be at 500fwhp.

Advanced Induction can provide simlar products, but for a significantly more for maybe a tad more power.

[68LT1]

Thanks for the info. I don't have a set of heads to send Lloyd though. Would have to buy a set to send him. Are you saying the AFR heads only work on the LT4 intake?

[Camaro96]

The AFR heads Requires an LT-4 intake. Give Lloyd a call he will lead you in the right direction. He is a LT-1 guru and he is about helping you achieve your build goal not saying you his products. His work sales it self.

Sent from my Moto Z (2) using Tapatalk

[BALLSS]

Thanks for the info. I don't have a set of heads to send Lloyd though. Would have to buy a set to send him.

Generally people send their stock LT1 AL heads to Lloyd. This process can be done while you are having block machined and built for the 383

You would also send your intake so it can be port matched to the heads he does

Of course buying used GM AL heads is a option to send

[Fastbird]

I'll chime in here on some stuff.

Lloyd and AI both do good jobs with the LT1 OEM heads. I won't say a single bad thing about either. But to properly feed a 383 on the top end, you're going to want to move to a larger runner head because the OEM castings become a choke point higher in the power band. Yes, moving to an aftermarket large runner AFR (220, 227) or Trick Flow head will require the LT4 intake, but that's a cost of playing the game at that point. If you're trying to maximize the potential in the added displacement don't sell your build short by sticking with OEM castings.

[SSlowBoat]

I'll chime in here on some stuff.

Lloyd and AI both do good jobs with the LT1 OEM heads. I won't say a single bad thing about either. But to properly feed a 383 on the top end, you're going to want to move to a larger runner head because the OEM castings become a choke point higher in the power band. Yes, moving to an aftermarket large runner AFR (220, 227) or Trick Flow head will require the LT4 intake, but that's a cost of playing the game at that point. If you're trying to maximize the potential in the added displacement don't sell your build short by sticking with OEM castings.trickflow 23 degree require lt4 intake, 21 degree do not. but you are very correct. Ltconvert car was choking with the le2 heads, car is an animal now with LE ported trickflows

Sent from my SM-N950U using Tapatalk

[Fastbird]

trickflow 23 degree require lt4 intake, 21 degree do not. but you are very correct. Ltconvert car was choking with the le2 heads, car is an animal now with LE ported trickflows

Sent from my SM-N950U using Tapatalk

Huh...Didn't know that about the 21° heads. Nice.

On Call911's Procharged setup, we picked up something like 115 RWHP moving from AFR 195's (comparable to a ported stock casting) to AFR 220 RR's, all on the top end.

[68LT1]

Machine shop says I shouldn't go above 10:1 compression with aluminum heads. I thought LT1's were good for a little higher compression

[Fastbird]

Machine shop says I shouldn't go above 10:1 compression with aluminum heads. I thought LT1's were good for a little higher compression

Lots of guys running 11-12:1. Might want to speak to your machine shop about their knowledge of the Gen II vs Gen I SBC stuff.

[Cathead]

Machine shop says I shouldn't go above 10:1 compression with aluminum heads. I thought LT1's were good for a little higher compressionI'll have to disagree with the machine shop. I have LE Trickflow 21 degree heads with a 12.2:1 compression on 93 non-ethanol pump gas. I can't bad-mouth AI because I've never used them but I will vouch for Lloyd. He's a real professional!

Sent from my SAMSUNG-SM-G900A using Tapatalk

[SSlowBoat]

Machine shop says I shouldn't go above 10:1 compression with aluminum heads. I thought LT1's were good for a little higher compressionI would find a new machine shop. I run 11.0:1 on stock bottom end with Lloyd Elliott LE2 heads and cam.

Sent from my SM-N950U using Tapatalk

[Injuneer]

Stock LT1 engine with aluminum heads static CR is 10.4:1. Stock LT4 engine with aluminum heads is 10.8:1. My 381ci w/ LT4 heads is just a bit under 11:1.

Dynamic CR is more important than static CR in determining octane requirement.

What’s the elevation where you live? Higher you go, the more CR your engine can handle.

[68LT1]

I will have to talk to him again. I recall he mentioned he only worked on one LT1 before

[fullforce]

got any engine bay pictures?

[68LT1]

Yes, will take some and post. Car is up on stands right now

[fullforce]

Thanks I've got a 72 firebird I'm starting on, (ONCE I SELL MY 94) and have been thinking about doing a carb intake lt1.

[68LT1]

no way man, keep it fuel injected. looks cool and freaks people out when you pop the hood

[fullforce]

no way man, keep it fuel injected. looks cool and freaks people out when you pop the hood

I should have specified lol. I would run a carb intake with throttle body, main reason would be to keep the shaker hood scoop functional.

When its done it will look like this.....

38119

[68LT1]

Never go back to carb again38121

[fullforce]

Wow very clean! I defiantly dont want a carb.

What wiring setup did you go with or is that a custom harness?

[68LT1]

Thanks. Used Factory harness and made my own fuse panels. Pcm is in the glove box

[Dieselfool]

Looks great!, I also have a 68, no where near as nice... maybe one day. But I am also looking to swap. I have 2 complete Lt1's, one out of a 93 camaro, the other out of a 93 firebird... anything I should know about this process. I'm new to it all, and looking for any help I can get.

[68LT1]

Just make sure you use D-port headers. I use the shorty style. Other than that, it's the same dimensions and bolt pattern as a regular SBC. Awesome motor. Are you going to use standard or auto tranny?

[Dieselfool]

Just make sure you use D-port headers. I use the shorty style. Other than that, it's the same dimensions and bolt pattern as a regular SBC. Awesome motor. Are you going to use standard or auto tranny?

The one motor came with a set of long tube pacesetters, not sure how they'll fit yet tho. I currently have the stock 7004r that was behind one of the motors, not sure if i'm going to use it tho, but I would like to keep it an auto.

[68LT1]

I originally had the 4L60E, but put in a T56 3 years ago. So much fun

[Dieselfool]

I originally had the 4L60E, but put in a T56 3 years ago. So much fun

I just the old lady to be able to take it to get groceries if she wanted.