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I called mopar and they recommended a 340 HP (RED SPRING) but I was trying to see if what I had would work to avoid having to buy new springs.

Thank you Geoff 2. Just curious how did you come up with the desired spring height ?

Full list of build specs and all parts included in above paragraph. CAM Mopar performance ( purple shaft) cam - P4452761AE Cam style: hydraulic flat tappet Intake/exaust duration: 268/272 Intake valve lift with Factory rocker arm ratio: 0.450 inch Exhaust valve lift with Factory rocker arm...

Hello I am currently in the process of putting back together a Mopar 408 stroker I recently purchased that had to be taken back apart due to use of improper head gaskets (did not use an mls gasket and the fire rings in the gaskets exploded from compression). During the process of discovering...

Just want to thank you all again for your helpful responses after a crazy few weeks of travel for work I finally found some time during the Thanksgiving holiday to get the motor disassembled after removing the intake I was immediately met with a small piece of metal fragment from a gasket I...

Thank you Doug I appreciate you taking the time to respond with that amount of detail. I'm headed home from my work trip tommorow and hope to get after it this weekend and report back. If not this weekend I will report back once I find the issue. Thanks all have a great weekend .

Agreed my logic is as follows. 1. Remove intake check or obvious oil leaks into cylinders 5 and 7. 2. Remove cylinder head and check for obvious signs of blown headgasket. 3. Last resort yank motor and pull pistons rods etc.. Thanks everyone for taking time to respond I appreciate it. Wish...

Im not sure pnora I was told/sold the motor pictured below was a fresh rebuild. I was given all receipts for the motor work as well as receipts and even the physical boxes for all of the aftermarket parts. I was told the motor was built for his duster and he decided he wanted a big block for...

Thank you all for the help. Unfortunately I am out of town this week for work so I cannot complete the leak down test at the moment. As of now the guy I bought it from says he is willing to work with me because it was a running motor I am just trying to conjure up ideas of what may be wrong...

Thanks for the responses!. @Mick56 I am unsure I find conflicting information about that edelbrock states that the front nipple is ported (pcv vacuum )and the rear is unported (brake vacuum. However a user on this forum (fugly) has convinced me that both are unported so unfortunately I cannot...

The odd thing is it seemed to run good while idling for 20 minutes or so after setting base timing. No apparent blowby oil smoke out of exhaust or breather etc.. it was only after the short drive the issue showed itself. Only thing noted at the time of setting base timing was low vacuum at the...

I recently picked up a built mopar 408 stroker engine to drop into my 1973 Plymouth Satellite. The engine was purchased from a gentleman that said he had gone through the complete engine and that it was a running TurnKey motor. I installed the engine into the car and shortly after setting base...