View Full Version : headers & intake

01-27-2002, 09:27 AM
Been looking into the Clifford 4bbl. intake & header set-up for the van.
Has anyone tried this ?
Kinda of expensive but might improve performance.
Thoughts on this one ?

" Passion Pit II "

01-30-2002, 03:51 PM
Speaking of headers......
Has anyone found any aftermarket headers that will bolt on to the 307 in a 69?
Thanks, BZ

01-30-2002, 08:40 PM
I used the headers for a 76 monte carlo from Hedman- no clearance issues at all.

01-31-2002, 07:20 AM
Thanks for the info.....

chevy van 5150
01-31-2002, 08:08 AM
I called Jegs www.jegs.com (http://www.jegs.com) they have Hedman headers part number 69090 that fit 1967-1991 chevy vans V8 automatic $105.00. I'm not surprised the Monte Carlo headers fit, I think the headers on my old van that I picked up used were off a chevelle.


01-31-2002, 03:23 PM
Thanks for the info, once I get finished painting the 66, I am going with headers and duals (flowmasters) on my 69.
Question?: Has anyone found a good insulating material to line the doghouse with? My 69 V8 gets very hot on the right side behind the passenger seat?
Thanks, BZ

01-31-2002, 03:28 PM
I used Super Dynamat inside my Doghouse. With the engine temperature consistently at 210 degrees, the outside of the box is cool to the touch.

01-31-2002, 07:07 PM
Where did you get the super dynamat, I'm thinking of using header rap to help even more.

02-01-2002, 06:41 PM
www.summitracing.com (http://www.summitracing.com) ... They have a fine selection of high performance parts, not too much for my L6 250.

The dynamat that I got for the doghouse is lined with a metal cover that allows it to be placed in hot environments ... up to 450 degrees if memory server me correctly.

02-01-2002, 07:04 PM
Looking at www.summitracing.com (http://www.summitracing.com) , I did not see what I was looking for (in the search function). Their catalog shows a couple of things, but only the "Hoodliner" comes with the silver shield that I got with the "Super".
When I look at dynamat's web site, it does not mention the "Super" product either. www.eastwoodco.com (http://www.eastwoodco.com) also has some of dynamat's products, albeit none of the super variety.
The Dynamat High Performance Liner is rated to 400 degrees (on the Eastwood site). 33" by 58" roll comes in at $60.00, so they do treat it as if it were soemthing special.

chevy van 5150
02-01-2002, 11:16 PM
I think the dog house stays a lot cooler with headers than cast Iron Manifolds. Also I read that some of the Header companies don't recommend wrapping headers as it causes them to overheat, and also shortens the life of the header. It also voids the warranty.


02-02-2002, 07:50 PM
If you read the warranty, it usually covers only the welds, and not rust out. If you live in the snow belt, headers will only last 3-5 yrs if you drive year round no matter what you do. I hear the ceramic coated headers hold up much better, but can add $200 or more to the price. At any rate, the headers don't retain heat like the cast iron manifolds, and doghouse temps are a bit lower. If you need to wrap em, I'd say go ahead, because headers aren't a lifetime part anyway IMO.

02-04-2002, 06:10 AM
JC Whittney, used to sell headers for hotrods, Blackjack, I got mines from them for about $100.00. the only problem is the changing out the starter is kind of a pain because they are close fit.