70 chevelle

[70 Chevelle]

Here she is. I've been trolling around here over a year and decided to post pics of my 70. She has been sitting 15 years since being painted. I was going to do a big block back then and I'm actually glad I never finished . Looking back the car would have been extremely impractical, ridiculous roller , 13:1 compresssion. My direction for the car has changed drastically. LS mock block is on the way along with a 4L80 core once the engine and suspension are mocked I'll get her ripped apart and give her some fresh paint. 15 years of moving from garage to garage has put a few scratches on her. All of the sheet metal is original except the front fenders, I bought the car with a horrible glass clip on it , luckily I bought nos fenders back then. It's a spotless rust free shell. sorry about the quality of the pics it's hard to get a good picture inside my shop with the light. Will post fresh pics as I make progress

[55chevyman]

like the chevelle cant wait to see more updates.

[70 Chevelle]

I have to raise the engine slightly because the centerlink is making slight contact with the pan on full turn, I think I'll just make frame brackets that are slightly higher than the originals. Other than that the 4l80 looks like it's going to fit with some slight clearencing just above the tail housing where it bolts to the back of the trans.

[70 Chevelle]

I managed to get some dash work done. I molded my own dash insert and fabbed a panel for the Vintage air unit. I'm waiting on some mig parts to get the main unit under the dash and I still need to mold some pods to flush mount the gauges. The controller panel is two pieces to allow the controller to sit flush. I have not decided whether to paint the panel black or leave it brushed, leaning toward black.

[70 Chevelle]

Vacuum bagging even got the edges to roll over into the crevice that surrounds the panel.

[Smock67]

Nice project looks like your moving quite fast. The dash panel looks nice.

[TPI Monte SS]

Great work so far, keep us updated please!

[Young Gun]

awsome! keep us updated!

[shortrack]

chevelles rock.......!!!

[70 Chevelle]

Finally got the tie rod clearence right. ATS mounts, short narrow stands , tall narrow mounts. but also used the clamshell plate which comes with the motor mounts the recessed area on the plate will have to be ground flat as the ATS mount already has this recess in it.

[andrewb70]

I would suggest to you that you not raise the engine. In fact, I would urge you to lower it as much as possible and come up with another solution for the tie rod issues. When these cars are lowered driveline angles become a problem. When you raise the front of the engine the problem becomes even worse. Add to that the longer 4L80 transmission and I can guarantee to you that you will have issues. I have always had a high speed driveline vibration in my GTO and I think I am finally getting a good handle on it. I haven't posted anything about it in my build thread yet, but I will.

https://www.pro-touring.com/forum/sh...003#post369003

Today I am actually going to see if I can find some narrow/short engine mounts to try and lower my engine. Modify the pan to clear the tie rods.

Andrew

[70 Chevelle]

The only thing that raised it were those plates which isn't much. The combination of short stand and tall mount equals that of the tall stand and short mount. I am using a short stand and tall mount which would have been used on this car with a small block anyway. As far as the 4l80 goes I'm thinking about dumping the idea. I'm gonna wait and see how the headers fit with both combinations and make my decision then. The 80 is a tight fit and requires that the engine sit further forward than I'd like to have it which might cause a problem using off the shelf headers. Once I get the headers I'll post pics with both trannies for comparisons sake.

[andrewb70]

The only thing that raised it were those plates which isn't much. The combination of short stand and tall mount equals that of the tall stand and short mount. I am using a short stand and tall mount which would have been used on this car with a small block anyway. As far as the 4l80 goes I'm thinking about dumping the idea. I'm gonna wait and see how the headers fit with both combinations and make my decision then. The 80 is a tight fit and requires that the engine sit further forward than I'd like to have it which might cause a problem using off the shelf headers. Once I get the headers I'll post pics with both trannies for comparisons sake.

Tony,

I raised my tailshaft not even 1/2 inch and it made a huge difference in the angles. Unfortunately, now the front u-joint on my driveshaft is grazing the floor boards. I am using the same frame stands as you are with the tall/narrow mounts. I am going to swap them over to the short and wide ones to bring my engine down.

Andrew

[70 Chevelle]

Please correct me if I'm wrong , but switching to the other style of mount will give you the exact same height of combined mount and stand. For example with the short stand tall mount will give you a combined height of 3.25 like my car does. Switching to a taller stand and and shorter mount will still give you a combined height of 3.25. I've seen pictures of the two side by side somewhere on the web I'll try to find them and post a link. I think it was on ls1tech.com.

[The WidowMaker]

70 chevelle - you are correct. the correct combo of mounts will give you the same height. im running the modified tall stand and tall motor mount. this gives me about 1/2" more and it helps the tie rods clear the pan. i installed the tremec yesterday (mock up) and with the tranny down 3* the slip yoke is about 1/4" from the floor. if my trig is correct, i need to raise the rear another 3/4" to get my angle to 1.5* down. i know gokou found this angle to be the best. any more input?

i think i must have gotten a massive mount, because where it sits now is with an unaltered mount or crossmember.

i plan on cutting the driveshaft tunnel up anyways, so i dont see why there should be an issue with the motor being slightly higher. in fact i think it will make for a better cog. i think the headers will be my lowest pt, so by raising them 1/2", i can drop the whole car 1/2". it will end up with the motor the same height off the ground and the car will be 1/2" lower giving me a better cog.

[70 Chevelle]

This is not my picture someone on ls1tech kindly posted the info

[70 Chevelle]

Andrew,

Thats the picture I was talking about Andrew. The plate that I installed behind my mount is the one that comes in the motor mount box to encapsulate the urethane material and would have to be used on a small or big block to keep the urethane in place . The ATS mounts have a recess machined right into them eliminating the need for the plates in an ls swap but the slight difference in height gave me just enough height to not have tie rod issues.


Widowmaker

What's the total combined height of your mount and stand now?

[The WidowMaker]

ill have to measure, but its the difference in height btwn the two motor mounts. somewhere there is a link to energy suspensions site that has the two listed. it was right at about 1/2", i think.

[The WidowMaker]

just found the link. mines the difference btwn the shorter s/w at 1 3/4 and the t/n at 2 3/16. so mine sits 7/16 higher, if the picture is correct and they are the same height down the the 16th.

[70 Chevelle]

I think you would be better off lowering the engine as much as possible. If it wasn't for tie rod and centerlink clearence I would try to place it lower.