Building a motor based on '85 lower end. Will E7's and a TFS1 work with 1.72's??

Friend of mine is having serious issues with the motor in his '88. It leaks, ticks, knocks and burns oil.....so we decided to just replace it with what we have lying around.

We have an '85GT project that has stalled but have the engine out of it. It has 55,000 miles and no problems other than being an E5 block.

We are just slapping this together with what we have laying around.

E5 lower end
New oil pump, pan, water pump
new timing chain
Deleted smog equipment and A/C
U/D pullies and electric fan
E7 heads w/ 3angle valve job and light port work. TFS valve springs
TFS Stage 1 cam
Edelbrock EFI manifold
24# injectors
MAF conversion
Headers w/ off-road pipe and flows.

This will all be in front of a built AOD with converter and cooler. Rest of car is modded and it's fast but the motor needs to be freshened up. It's the last part to really be touched.

My question is do you think i would be able to run 1.72 rr's with this combo? The E5 pistons are cut for valve reliefs but unsure if they will work with the TFS cam, E7's and roller rockers. I may stick with the stock RR's for now but later on down the road we want to put rr's on it. It's just than now is the time to clay the piston but we don't have the rr's.

Also any HP estimates??

1BAD93 said:

Mike,

good thing I came across this....when do you need the block. The 93 is in the way but you can move it yourself if you want to get it during the week.

Joe

Click to expand...

PM sent

ok TTT, halfway through the swap and have the new motor almost ready to go in.

We are gonna stick with the stock 1.6's for now.

Can't wait to hear this thing run
View attachment 515976

Got it running last night. Man does it sound mean. It was raining so couldn't take it for a spin but just moving it around the driveway you could tell it had tons more power than the tired old 302 it replace.