I have a 351w with a aluminum edlebrock preformer intake and a new 600 holley. Do I need a spacer for any reason under the carb???? she has a 268 cam and bored .30 over.


Thanks

 

At least run a 1/2" thick or better yet a thicker phenolic spacer to keep engine heat away from the carb preventing gas boil over and hard hot restarts. A 1" or taller 4 hole spacer will give the carb a stronger siginal plus give you lower rpm low end torque. Stay away from aluminum spacers as they will put heat into the carb.

 

I have been having problems starting the truck when it is hot. Pick me out a spacer guys and give me some power. I think you solved my hot start problem. but maybe not. she is hard to turn over!!

 

That sounds like a heat soak problem all Ford starters have including the FE family of motors I have. Headers add to this problem, wrap the starter to keep some of the heat away from the starter.
The high torque mini starters with a gear reduction drive have worked for many Ford owners but there is the high cost of these aftermarket items.

 

Funny thing is I had a wrap and took it back. I also have headers!!!

 

What do you think is the tallest spacer with a stock hood if I have a 351w and edelbrock 1450? Anybody remote the aircleaner like on early oil bath versions?

 

When the headers were new I had them ceramic coated inside and out allowing Mr.Starter to live and work a little better from heat soak.
I'm not in my normal forum section, all my motors have a one inch 4 hole spacer, may go to a two inch on the truck as I have hood clearance.

 

Guys just a little update. i put a holley 600 on it and she runs perfect. will turn over my p buckshots. I bouthg a space but to make it fit, i will hove to drill the threaded holes out and the space is aluminum. where can I get a good spacer that will work on a edlebrock performer intake and a holley 600??

 

Summit, Jeg's, your local speed shop or go on line this is what I did as there is a large price difference. Careful there are plastic spacers they call as phenolic spacers, maybe ok on a chebbie. There are different diameter bores in the square bore design carb spacers like you have for the holley carb. Get a phenolic spacer for the insulating properties vs a aluminum
spacer. For each inch in thickness on a 4 hole design I recall it lowered the torque pulling range by 125 rpm's (I may be wrong) this also takes 125 rpm's off the top end rpm's. You can't have it all unless it's a VANOS variable valve timing motor. Not in this lifetime on an old Ford motor.
I have taken the smaller bore spacer and milled them out to exactly match the carb base throttle bores this is better than installing a larger bore spacer than the carb base bore causing turblence and a velocity loss. The next size down is smaller than the carb base throttle bores, yuck not good either. I want as smooth of air/fuel flow as possible, enhanced low end torque plus the strongest vacuum signal to the carb.
You ask, why don't they make carb spacers that are exactly the same bore as the carb throttle base bore you say? This is a damn good question maybe they think good enough will do, i've always questioned this?
With this I use undersized gaskets then cut them out larger to match the spacer and carb base for a smooth flow.
Nothing less than perfect is not good enough I was taught, I will do the best I can knowing I have done my best. Hell 15 mpg with a 414 and C6, somethings done right.