I have a set of these stage JR heads, they were good heads and the best ported versions I had.... Until one intake valve popped the head of the valve off and destroyed it. Not the heads fault, they are good iron parts.
There's no gasket or donut used on the crossover to manifold connections. Does the crossover fit ok on the manifolds before before you slip the flange up?
A lot of us use a film of high temp RTV on the mating surfaces.
Perhaps a misalignment or damage on the taper.
Picked up another complete engine to help get the Regal back up.
An '83 turbo 3.8, I'll strip it down and make it the new blowthru testing mule.
Need to check the bottom end but I have two sets of Speedpro steel piston rings to use this time, it will get the 206 roller cam setup and topend from...
There's low-profile valve covers for roller rockers available. Those will fit, but raising the whole turbo up on the stock manifold or modifying the carb plenum is the solution.
The Impulse is one of my daily's I spin it high it pulls all the way to the top. If it has boost it would be really good, I have stopped myself from pulling it out and stuffing it in the blowthru Regal.
The Kenne Bell mark 2r cam is what we/I want. EK02 had a roller version of it made and he...
EK02 gave me a camshaft to replace the Kenne Bell XP1 cam that was in my +
.030 over 3.8
This version was flat tappet but would be a good candidate for a roller grind.
Elgin Prostock 998P
214/224 .472/.496 lift.
The other camshaft bigger than this could be used. I'll add the catalog from 2022
Dangit! Soo much getting in the way of getting the car back out. This is the longest it has been off the road. I have been able to drive the 3.8 swapped Impulse to get the Buick 6 noise and feel fix, but it's all motor. One of my newer daily drivers ('11 BMW X5 35D) helps get the boost fix and...
Went back to this engine and pulled the oil pan and distributor cap. Definitely an oddfire and built/balanced. I left it and the TH400 there I have no immediate need for either.