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Search found 2384 matches

by Alan Roehrich
Tue Feb 04, 2020 9:02 pm
Forum: Engine Tech
Topic: Piston Question
Replies: 10
Views: 695

Re: Piston Question

Also, Mark is correct. There are a lot of good quality affordable forgings available for that application and power level. With the advent of all of the high end companies having a dedicated entry level sub brand, excellent forged pistons are more affordable now.
by Alan Roehrich
Tue Feb 04, 2020 7:58 pm
Forum: Engine Tech
Topic: Piston Question
Replies: 10
Views: 695

Re: Piston Question

Looking for a rotating assy for a 400 SBC, not trying to make big HP but would like 500 or so HP. There is a ton of kits out there with the KB pistons, hypereutectic alum, I was thinking they used to have a lot of problems with these. I know you have to run more gap on the top rings, anyone have an...
by Alan Roehrich
Sun Feb 02, 2020 9:28 pm
Forum: Engine Tech
Topic: Contact at comp cams
Replies: 48
Views: 2073

Re: Contact at comp cams

If going with Comp, I'd recommend Tim Cole. I just talked to Tim at PRI and he's not at Comp anymore. Wasn't aware of that, been a while since we talked. Curious what Tim is doing now? Mostly enjoying retirement, I have seen him at the drag strip some. I think he's fooling with his AMC some, slowly...
by Alan Roehrich
Sun Feb 02, 2020 9:10 pm
Forum: Engine Tech
Topic: Contact at comp cams
Replies: 48
Views: 2073

Re: Contact at comp cams

If going with Comp, I'd recommend Tim Cole. I just talked to Tim at PRI and he's not at Comp anymore. Exactly. Tim Cole retired in December of 2018, Tim is a personal friend,and ran the racing department at Comp. He referred me to Dave McCarver, who I used in the past for circle track cams. Dave is...
by Alan Roehrich
Sun Oct 27, 2019 1:48 pm
Forum: Engine Tech
Topic: angle milling bbc heads
Replies: 7
Views: 1272

Re: angle milling bbc heads

I have only flat milled those, around 0.060", because we could find the ones that were 96cc nominal, once you added 2.190' intake valves, and put hard exhaust seats in, it took them down a bit, even if you opened the chamber slightly to unshroud the valves. You could get plenty of compression with f...
by Alan Roehrich
Fri Jul 05, 2019 10:53 am
Forum: Engine Tech
Topic: Fuel Atomization by a Carb
Replies: 21
Views: 1296

Re: Fuel Atomization by a Carb

Not sure what you're seeing is really related to atomization. Most applications for annular discharge venturis are to increase throttle response on applications where the carburetor size has a negative effect on throttle response at lower RPM. The annular discharge increases the signal, pulling more...
by Alan Roehrich
Fri Jul 05, 2019 10:46 am
Forum: Engine Tech
Topic: Ring Seal
Replies: 71
Views: 3854

Re: Ring Seal

I have never had Keith or Kevin tell me to install rings dry, ever. I do use Kwik Seat. I usually use Dexron, although sparingly, I lube the rings and grooves lightly, place a drop or two on the skirts, and the cylinders are already wiped with a lint free cloth saturated with Dexron and wiped dry. I...
by Alan Roehrich
Thu Apr 04, 2019 7:49 pm
Forum: Engine Tech
Topic: ? who takes in distributor work; has SUN dist machine/tester ?
Replies: 10
Views: 750

Re: ? who takes in distributor work; has SUN dist machine/tester ?

Jimmy Bridges, Bridges Performance, in Nashville TN, phone 615-228-3516. He has 60 years of experience. Tell him that I sent you.
by Alan Roehrich
Thu Apr 04, 2019 7:45 pm
Forum: Engine Tech
Topic: Decking a 496 Block
Replies: 4
Views: 708

Re: Decking a 496 Block

If the pistons are shelf stock and you haven't scratched them, see if you can send them back, and just order a custom set, they won't be much higher. Also, send the block to a competent machine shop and have the decks corrected. And everything else checked.
by Alan Roehrich
Sun Mar 31, 2019 12:23 pm
Forum: Chassis / Suspension / Body
Topic: drag race wheel alignment
Replies: 17
Views: 2269

Re: drag race wheel alignment

We run tall ball joints to cut down on camber change, and bump steer kits. As a rule, we run 1/8" to 1/16" toe in, and as much positive caster as possible of course, not using longer bolts or studs, or stupid amounts of shim). We align with the car raised in front around 2"-3" from ride height, with...
by Alan Roehrich
Sat Mar 16, 2019 10:20 am
Forum: Engine Tech
Topic: Cloyes Quick-a-just
Replies: 19
Views: 1501

Re: Cloyes Quick-a-just

We use the fast adjust type timing set with the six bolts on the cam gear exclusively, and extensively, where chain type sets are used on race engines. We've had zero problems and zero failures. The max open pressure we've used them with is around 600#. For hard core racing roller applications, we u...
by Alan Roehrich
Wed Mar 06, 2019 9:10 am
Forum: Engine Tech
Topic: Let's discuss GM's new RUMORED Big Block reintroduction!
Replies: 88
Views: 6711

Re: Let's discuss GM's new RUMORED Big Block reintroduction!

You're not going to end up with an aluminum block. The same basic engine is going to be in trucks from the regular 1 ton up to Class 7. It's probably going to be compacted graphite cast iron. You might save 100# or so with aluminum. But you have to make it really strong to run constantly at WOT and ...
by Alan Roehrich
Tue Mar 05, 2019 11:20 pm
Forum: Engine Tech
Topic: Let's discuss GM's new RUMORED Big Block reintroduction!
Replies: 88
Views: 6711

Re: Let's discuss GM's new RUMORED Big Block reintroduction!

Had someone email me and ask me to clarify my points, and check out what was posted elsewhere. That Mark Smyth guy is a real piece of work. Just, wow. The 8.0 he speaks of is an old Mark IV/V/VI type engine, basically a 4.27"x4.25" Mark VI big block with old Mark IV style oval port heads, possibly w...
by Alan Roehrich
Tue Mar 05, 2019 7:39 pm
Forum: Engine Tech
Topic: Let's discuss GM's new RUMORED Big Block reintroduction!
Replies: 88
Views: 6711

Re: Let's discuss GM's new RUMORED Big Block reintroduction!

Anything 8.0L with a cast iron block and aluminum heads is going to weigh about the same. Everyone, or damned near everyone, makes a 1 ton and bigger truck engine with a cast iron block for several very good reasons. Even the new "big LS" small block for the 3500 uses a cast iron block, according to...
by Alan Roehrich
Tue Mar 05, 2019 4:01 pm
Forum: Engine Tech
Topic: Let's discuss GM's new RUMORED Big Block reintroduction!
Replies: 88
Views: 6711

Re: Let's discuss GM's new RUMORED Big Block reintroduction!

I don't know anyone who has tried to put the 8.1 crank in the 7.4 block. I don't know why you would. It's not like it is a special piece, and once you get past 4.25" stroke, most move to a 10.2" deck height block. GM sold much of the tooling and equipment for all of the production big block Chevy en...