Intake crossover Block off effect on exhaust note
I have been driving my 62 390 since Nov 1969 . I have always had stock mufflers and resonators and I enjoy the fact that it is very quiet . In 2000 I put a new dual exhaust system on it and again it was very quiet.
Recently I repaired the intake manifold as the choke tube was leaking so i ordered the Olson block off Gaskets. When I started it up the exhaust note had become much more aggresive. In short I hated it !
I tore it down again used stock gaskets and the sound returned to normal. I have a friend with a 63 that did the same using Olson gaskets with a single exhaust and it was much less aggressive sounding and we both agreed it was not a problem. We both used spacers in place of the heat riser.
Replies to This Discussion
-
Permalink Reply by Kurt on
-
I assume it has something to do with a crossover pipe when using dual exhaust. The intake exhaust path is serving the purpose of a crossover pipe. With single exhaust, both sides are routed together so a crossover pipe would make no difference. Does your dual setup have an added crossover pipe?
Members
Forum
Rear Main Seal Oil Leak Fix with Bearing Cap Modification
Started by Kurt in 1963/64 Cadillac Specific Discussion. Last reply by Dennis P. DiBari yesterday. 14 Replies 4 Likes
Many owners have reported oil leaks at the rear main seal even after replacing the seal, myself included. Recently Tony Lentini found a Serviceman bulletin published in February 1965 which details a…Continue
Future of CLC Judging
Started by Jason Edge in Restoration Discussion. Last reply by Jason Edge yesterday. 6 Replies 0 Likes
First, A Big Thank You to CLC Chief Judge Bill Anderson for taking on this daunting task of overhauling the CLC judging system. The old system was very good, however, I believe what Bill and the…Continue
front seat crest
Started by Frank Murch in 1963/64 Cadillac Specific Discussion. Last reply by Frank Murch on Tuesday. 3 Replies 0 Likes
Original seats had a crest on the center arm rest. Does anybody know where I could embose a crest in new material for a reupolstry?Continue
Coolant Overflow Bottle / Reservoir for 64 Cadillac Eldorado
Started by Michael Stinson in 1963/64 Cadillac Specific Discussion. Last reply by Bill Wolf on Tuesday. 7 Replies 0 Likes
Greetings Everyone. I read a discussion thread about "radiator and related", covering coolant overflow. Has anyone fitted an overflow reservoir / bottle to their 64 Cadillac? Is there if a…Continue
Blog Posts
1963 RHS A/C kick panel - photos needed
Posted by SK on June 2, 2025 at 2:20pm 2 Comments 0 Likes
Could someone post front and back photos of the 1963 right-hand kick panel with A/C?
My car didn’t come with the original kick panels, so it's a bit of a mystery to me how I should cut the backing board and carpet to fit around the A/C.
Many thanks,
-Samu
Edelbrock Carb Block off Plates
Posted by Chase on March 12, 2025 at 2:05pm 14 Comments 1 Like
Hey guys,
I have installed the same Edelbrock carb and have done everything the same as Jason’s carb and intake project. In the spring and summer months the car starts, runs and idles great! In the fall and winter months on a cold start, the car starts awful and wants to die until it warms up. I have to keep my foot on the throttle until it warms up or it will idle just terrible and try to die. Once it’s warm, it runs fantastic! Whats going on here? I was thinking of removing the…
ContinueNew old stock seat material
Posted by Ray Schick on August 22, 2024 at 6:25pm 2 Comments 0 Likes
I bought this seat material thinking that it’s…
Events
Videos
© 2025 Created by Jason Edge.
Powered by
