Hey all I got an opportunity to get some new in the box, never run, assembled Edelbrock aluminum heads. I've heard good and bad on them and read about having to have the valve seats corrected before running them. Just looking to get some opinions before pulling the trigger. He's also got Edelbrock pushrods for them, should I grab those too? My deck was cut down to 10.55 and my pistons are 0 deck, will they be any use to me? What chevy rocker assembly will I have to use or can I use something different/better? All info/opinions greatly appreciated! Cheers, Bob
I will second the pro magnum rocker...I believe they come with a great warranty when purchased new. As far as pushrods.....you won't know what exact length you need till heads are on and rockers in hand. Gasket thickness, true deck height, even different rocker arms, different lifter cup height, cam base circle all can effect pushrod length. So any pushrod bought b4 measured is a gamble on if they are the correct length
Thanks guys I'll look into those rockers. Any suggestions on the heads themselves? Only work he's done to them is gasket matching. I assume it would be a good idea to have my machinist check them out and check all the valve seats. Ben you're right on the pushrods, I was going to order them last. Anyone know what springs come in the assembled heads? I have a set of TA stage 1 plus valve springs on hand ready to use.
I would be surprised if you can use a buick spring and or retainers on them. I've not had a set in my hands, but I would guess they are setup to use chevy style and sized parts to keep cost of building as low as possible. I've read conflicting information on how much they truly flow in stk form......not sure if or how much better they are than stk iron heads
Riiiiiiight the whole chevy only parts thing on those heads. Well I'll hang onto those springs anyways just incase I get a set of TA SE heads one day. I think if I pull the trigger on these I'll take them to a highly recommended head porter near me and have him check them over and do some port work on them. I was trying to get him to do my 68 430 irons but he only does aluminum heads now. He said since he's old his hands can't take the iron anymore .
I've got the Edelbrock heads on my car. They work pretty good and are way lighter than the iron ones. I can't compare them to TA as I've never had a set of those. I've never had it down the 1/4 mile either in current trim. With a TA 212 cam, she can break them loose in second gear from a 30MPH roll. It was built to closely match the Hot Rod magazine 500HP motor. I'm using the 7/16" studs and the Comp Cams roller tip rockers, which fit under the stock valve covers without touching. With my combo, I wound up with slightly shorter than stock pushrods. They can be a little noisy since they require hardened pushrods and guide plates. Best to buy a pushrod checking tool to be sure.
Get them ported and let him make you a good 3 angle valve job and you will have a good cheap set of heads. Finishline have a CNC program that gets them to 320’s on intake.
Last I knew that cnc program was like a tick over 1000, they did my TE2 head and after having them flowed on a 3rd parties but well known bench, Mike from AMP, the flow was basicly right on advertised numbers. Get that and custome cam cut and you will have a decent runner......
I ran a set of Gessler ported Edelbrocks on my Skylark and ran 10.9's with them at almost 125mph. The car weighs about 3800 with me in it and was street driven. I had a rod let go so they are at the machine shop now getting 2 valves and guides replaced if Edelbrock ever sends them the valves, been 4 months now. I also run the Pro Magnum rockers. I shift between 5500 and 5800 mostly and run a solid lifter cam and had no issue with the Chevy style valvetrain. Ken
I won't be sending these state side for any cnc work as that would be cost prohibitive but I will take them to have port work done up here. As for a cam I have a TA 290 94H that I was planning on using. The engine is going in my 69 Riv.
As previously stated the Eddys flow well when ported and good valve job. Have flowed a some sets and I've seen 330 cfm from the ones Bob at Finishline has done. Just finished a motor for a customer that used these heads and he runs 10.5' with a solid cam. The only downside on a street motor is they are a little noisey due to the pushrods rattling against the guide plates. We've cut that down considerably by using adjustable guide plates to better center the pushrod.
Gary if you could post up some pics and info on how you cut down the guide plates that would be great. My car is a street car and it is loud exhaust wise but I don't want any rattling if I can help it.
There isn't really wrong the chevy valve train.....lots of motors run lots of rpms across the country with them......just don't buy 99 dollar roller rockers and expect them to last......you would be better with old used crane or comps. If this is going to be a street driven mostly engine I would use a type of steel full roller rockers....they will just last longer than the aluminum. I find chevy rockers just time consuming to adjust even in stk form......but it just is what its is. In cars it not the biggest deal to adjust 1......but in the marine motors I do its a pain in ass if one is slightly off.....especially in twin motor applications
I'm thinking of using these ones as per multiple people suggesting them. https://www.tdotperformance.ca/comp...vgvfmgMkbdbM91bBjrXbrAxj3RWju6dxoCnjsQAvD_BwE As for adjusting them I may have to get to to walk me through it Ben.
If I did the exchange right thst 430ish us. Summit has them for 360 us but not sure how shipping across that line effect things https://www.summitracing.com/parts/cca-1602-16
So a quick calculation here for fun. If I buy them up here at $542.98+ taxes =$613.56 CDN with free shipping. If I buy them at summit it's $454.35 CDN + taxes= $513.42 plus whatever shipping is from summit, plus getting hit at the border with duty fees. I think it would be close dollar for dollar either way if shipping was free from summit, but I don't think they do free shipping to Canada? EDIT: Just used Summits shipping calculator and it's $82.29 CDN for shipping and duty charges. So summits total price is $595.71 and TDot is $613.56 so a difference of $17.85. I guess it boils down to pay the extra $$ and have them in a few days to a week or save $17 and wait 4-6 weeks for them??
I know its free over 100 in us I dont know if this is still what they do but might be worth a phone call to find out? https://www.summitracing.com/newsan...rs-free-ground-shipping-on-orders-over-299-00 https://help.summitracing.com/app/answers/detail/a_id/381/~/shipping-options-to-canada
7/16 studs are good upgrade to consider,...not really necessary persay as the buick isn't going to at 7krpm BUT,.... they are more stable,....pedestal valve train moves around a good bit at rpm
Thanks Ethan for the info. I know the heads are coming with 3/8 studs already and in your opinion do you think they're fine for a street car?
