I've got a lot of questions. I found a lot of answers here but I'll need some help along the way.
69 Camaro 307/TH350 pulled out. Done
Going with LS3 beefed up 4L65/70e or 4L80e
1) Does the 4L80e fit? Whos done it and what are the problems getting it in. I don't want to cut the tunnel.
2) What flexplate do I use for each? Are they different? Is the 4L80e flexplate dished and require a spacer/adapter?
More questions to come, THX in advance.
I posted another thread yesterday but cant find it or it never went up. Im new at this
Also whas the trick to get pics to upload. ugh
Im going with the lsx conversion plates. They're adjustable to 4 different positions (forward) and the BRP SureFit transmission mount. its adjustable also. Do you think the 4L80e will fit? What problems or clearance problems will I run into? If its a pain I can just as easily go with a 4L65/70e
thanks
Hello neighbor, I live in Tomball off of Louetta Road.
In most cases the 4L80 will require you to cut the floor pan hump. Otherwise your driveline angles will be off.
Considering that you are replacing the engine with a newer style LS and electronic transmission this is not a big deal. There are kits that will cover the hole you will make in your floor pan to make the job easier.
John,
The blueprint comes with the oil pan & dipstick but no headers/exhaust manifold and is cheaper. only issue is I may have to swap the oil pan anyhow as I have read the gm swap pan hangs below the crossmember.
comments???
The jegs engine you have to purchase an new pan & dipstick
As far as the controllers I was going to use PSI where they build a harness for your setup.
comments???
anyone with a answer for the flexplate? is it standard for 4L70e application and dished for the 4L80e application
comments???
You will need the Holley 302 pan. Dipstick is the same. I don't like they way the GMs stick up so I use a Lokar Dipstick. The GM Muscle pan I believe is the Hummer Pan which does hang low. Blueprint may change the pan for some $.
You can sell the GMP pan and Exhaust manifolds. May not get a lot for them but every little bit helps.
PSI is good. $1400 for auto trans. I do like their smaller fuse/relay box and the Corvette pedal. Is is NOT a Custom fit harness. THIS IS A USED GM FACTORY E67 ECM
Don't know about the differences if any in the flex plates.
Question on motor mounts.
I ordered the lsx conversion plates. Got the motor mounts.
Do I have to remove the stock engine mounting brackets on the subframe and replace with new conversion mounts for the correct height / angle for the LS376 / 4L60/65e or
Can I just mount it up directly using the existing subframe brackets?
I got the ICT motor mount adapter plates (adjustable) and the subframe towers are stock from the SBC 307.
Will that work or do I need to remove those & order something else?
I want to have the correct height / angle once installed...
THX
I ended up with the blueprint LS 6.2L 376 530hp engine.
got the 4L60e trans from Probuilt
and the Holley accessory kit on the front.
I used the ICT plates on the most aft (towards firewall) position
Test fit the engine and trans and it fits. yeah.
For what it's worth I purchased my setup from Turnkey engines and it's essentially a 4 wire hookup. They will customize your harness depending on where you want to locate the ECM and my set up included headers, motor mounts, starter, fuel system, a flywheel instead of the flex plate and lots of bits and pieces necessary to finish like wire connectors for dual fans, header bolts and other miscellaneous parts.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Team Camaro Tech
2.4M posts
83K members
Since 1998
A forum community dedicated to 1st generation Chevy Camaros owners and enthusiasts. Come join the discussion about performance, builds, restoration, modifications, classifieds, troubleshooting, reviews, and more!